Nissan 370Z Forum  

Suspect water pump

Originally Posted by fryzia23 No it isn't, but usually when the bearing goes it'll make noise. And it's more like a gurgle not whining. I never said always btw I

Go Back   Nissan 370Z Forum > Nissan 370Z Tech Area > Engine & Drivetrain


Like Tree23Likes

Reply
 
LinkBack Thread Tools Display Modes
Old 06-18-2017, 10:29 AM   #16 (permalink)
Track Member
 
Join Date: Dec 2009
Location: Farmington, Utah
Posts: 582
Drives: 14 SR 370z 6MT
Rep Power: 10139
Dreadnaught has a reputation beyond reputeDreadnaught has a reputation beyond reputeDreadnaught has a reputation beyond reputeDreadnaught has a reputation beyond reputeDreadnaught has a reputation beyond reputeDreadnaught has a reputation beyond reputeDreadnaught has a reputation beyond reputeDreadnaught has a reputation beyond reputeDreadnaught has a reputation beyond reputeDreadnaught has a reputation beyond reputeDreadnaught has a reputation beyond repute
Default

Quote:
Originally Posted by fryzia23 View Post
No it isn't, but usually when the bearing goes it'll make noise. And it's more like a gurgle not whining. I never said always btw
I know lol.

What do you work on at your shop? A little bit of everything?
__________________
Ford Diesel and Heavy Line Technician at your service.
Dreadnaught is offline   Reply With Quote
Old 06-18-2017, 10:35 AM   #17 (permalink)
Track Member
 
Join Date: Dec 2009
Location: Farmington, Utah
Posts: 582
Drives: 14 SR 370z 6MT
Rep Power: 10139
Dreadnaught has a reputation beyond reputeDreadnaught has a reputation beyond reputeDreadnaught has a reputation beyond reputeDreadnaught has a reputation beyond reputeDreadnaught has a reputation beyond reputeDreadnaught has a reputation beyond reputeDreadnaught has a reputation beyond reputeDreadnaught has a reputation beyond reputeDreadnaught has a reputation beyond reputeDreadnaught has a reputation beyond reputeDreadnaught has a reputation beyond repute
Default

Quote:
Originally Posted by SouthArk370Z View Post
Sounds like it may have been run without antifreeze.

You may have some of the same scaling on the pump impeller fins and/or water passages, reducing pump output and flow through the system.

This. Sounds like it's also due to poor maintenance by the previous owner like the OP stated.
__________________
Ford Diesel and Heavy Line Technician at your service.
Dreadnaught is offline   Reply With Quote
Old 06-18-2017, 10:57 AM   #18 (permalink)
Premium Member
 
SouthArk370Z's Avatar
 
Join Date: Nov 2010
Location: South Arkansas
Posts: 8,435
Drives: 2014 Challenger
Rep Power: 324198
SouthArk370Z has a reputation beyond reputeSouthArk370Z has a reputation beyond reputeSouthArk370Z has a reputation beyond reputeSouthArk370Z has a reputation beyond reputeSouthArk370Z has a reputation beyond reputeSouthArk370Z has a reputation beyond reputeSouthArk370Z has a reputation beyond reputeSouthArk370Z has a reputation beyond reputeSouthArk370Z has a reputation beyond reputeSouthArk370Z has a reputation beyond reputeSouthArk370Z has a reputation beyond repute
Default

Quote:
Originally Posted by Z_ealot View Post
That was my thinking right there too, i ran a bottle of the prestone super flush cleaner through the system for a few days before i swapped out the radiator and did get a pretty good chunk of white powdery stuff that ended up inthe overflow reservoir if that tells you anything
That chunk may have been part of the impeller. I'd plan on replacing the pump and doing a very close inspection of the entire cooling system. If the corrosion is bad enough to eat the impeller, no telling what other damage has been done and what has been plugged up.
__________________
Steering Lock Links - Search The370Z Bookmarklet - FSM @ NICOclub
Mankind has progressed past the need for war but we haven't evolved that far. - NachoMahma
SouthArk370Z is offline   Reply With Quote
Old 06-18-2017, 11:03 AM   #19 (permalink)
A True Z Fanatic
 
Z_ealot's Avatar
 
Join Date: Sep 2010
Location: Albuquerque, NM
Posts: 2,045
Drives: 09 370Z Touring/Sprt
Rep Power: 10091
Z_ealot has a reputation beyond reputeZ_ealot has a reputation beyond reputeZ_ealot has a reputation beyond reputeZ_ealot has a reputation beyond reputeZ_ealot has a reputation beyond reputeZ_ealot has a reputation beyond reputeZ_ealot has a reputation beyond reputeZ_ealot has a reputation beyond reputeZ_ealot has a reputation beyond reputeZ_ealot has a reputation beyond reputeZ_ealot has a reputation beyond repute
Default

Quote:
Originally Posted by SouthArk370Z View Post
That chunk may have been part of the impeller. I'd plan on replacing the pump and doing a very close inspection of the entire cooling system. If the corrosion is bad enough to eat the impeller, no telling what other damage has been done and what has been plugged up.
The whole reason i swapped out the radiator was that i was having the exact problem im having now with the system only overheating at idle with the ac on. You think running some more cleaner through the system would help or should i plan on replacing the water pump and then run cleaner through it afterward?
Z_ealot is offline   Reply With Quote
Old 06-18-2017, 12:40 PM   #20 (permalink)
Premium Member
 
SouthArk370Z's Avatar
 
Join Date: Nov 2010
Location: South Arkansas
Posts: 8,435
Drives: 2014 Challenger
Rep Power: 324198
SouthArk370Z has a reputation beyond reputeSouthArk370Z has a reputation beyond reputeSouthArk370Z has a reputation beyond reputeSouthArk370Z has a reputation beyond reputeSouthArk370Z has a reputation beyond reputeSouthArk370Z has a reputation beyond reputeSouthArk370Z has a reputation beyond reputeSouthArk370Z has a reputation beyond reputeSouthArk370Z has a reputation beyond reputeSouthArk370Z has a reputation beyond reputeSouthArk370Z has a reputation beyond repute
Default

Quote:
Originally Posted by Z_ealot View Post
The whole reason i swapped out the radiator was that i was having the exact problem im having now with the system only overheating at idle with the ac on. You think running some more cleaner through the system would help or should i plan on replacing the water pump and then run cleaner through it afterward?
I don't think using harsh chemicals is the answer. I would consider it, at best, a temporary band-aid that may do more damage than good. But you may not have much choice at this point. YMMV

I'd do an inspection of the block (you may be able to use one of the cheap borescopes/endoscopes that you can find online nowadays) for corrosion before going too far.
__________________
Steering Lock Links - Search The370Z Bookmarklet - FSM @ NICOclub
Mankind has progressed past the need for war but we haven't evolved that far. - NachoMahma
SouthArk370Z is offline   Reply With Quote
Old 06-18-2017, 12:48 PM   #21 (permalink)
A True Z Fanatic
 
Z_ealot's Avatar
 
Join Date: Sep 2010
Location: Albuquerque, NM
Posts: 2,045
Drives: 09 370Z Touring/Sprt
Rep Power: 10091
Z_ealot has a reputation beyond reputeZ_ealot has a reputation beyond reputeZ_ealot has a reputation beyond reputeZ_ealot has a reputation beyond reputeZ_ealot has a reputation beyond reputeZ_ealot has a reputation beyond reputeZ_ealot has a reputation beyond reputeZ_ealot has a reputation beyond reputeZ_ealot has a reputation beyond reputeZ_ealot has a reputation beyond reputeZ_ealot has a reputation beyond repute
Default

Quote:
Originally Posted by SouthArk370Z View Post
I don't think using harsh chemicals is the answer. I would consider it, at best, a temporary band-aid that may do more damage than good. But you may not have much choice at this point. YMMV

I'd do an inspection of the block (you may be able to use one of the cheap borescopes/endoscopes that you can find online nowadays) for corrosion before going too far.
I do have a borescope so i guess I'll have to get that in there, one thing to note though....this whole saga started a couple of months after i had the dealer do a coolant flush. The coolant that was in there beforehand i have no idea how long it was in there but it was still green in color. Before that i had no problems for the close to a year i had the car before i had them flush the system.
Z_ealot is offline   Reply With Quote
Old 06-18-2017, 01:29 PM   #22 (permalink)
Ronin Samurai - Assassin
 
Rusty's Avatar
 
Join Date: Dec 2011
Location: Fayettenam,Pennsyltucky
Age: 68
Posts: 35,171
Drives: 2011 Nismo GM 6M
Rep Power: 2684437
Rusty has a reputation beyond reputeRusty has a reputation beyond reputeRusty has a reputation beyond reputeRusty has a reputation beyond reputeRusty has a reputation beyond reputeRusty has a reputation beyond reputeRusty has a reputation beyond reputeRusty has a reputation beyond reputeRusty has a reputation beyond reputeRusty has a reputation beyond reputeRusty has a reputation beyond repute
Unhappy

IMO a coolant flush, tranny flush are the worse 2 things you can do to a car. I've hardly ever heard a good thing about them It's mostly always been a horror story. Your's is just another one on the list of reasons why not to do it. The bottom half of your radiator could be plugged from the scaling that got knocked loose/dissolved from the chemicals they used for the flush.
Z_ealot and SouthArk370Z like this.
__________________

浪人 - 殺し屋
"The Difficult Anytime, The Impossible By Appointment Only"
http://www.the370z.com/members-370z-...o-journal.html
Rusty is offline   Reply With Quote
Old 06-18-2017, 01:36 PM   #23 (permalink)
A True Z Fanatic
 
Join Date: Jun 2014
Location: Ga
Posts: 13,791
Drives: 2013 Nismo 370z
Rep Power: 2684392
Spooler has a reputation beyond reputeSpooler has a reputation beyond reputeSpooler has a reputation beyond reputeSpooler has a reputation beyond reputeSpooler has a reputation beyond reputeSpooler has a reputation beyond reputeSpooler has a reputation beyond reputeSpooler has a reputation beyond reputeSpooler has a reputation beyond reputeSpooler has a reputation beyond reputeSpooler has a reputation beyond repute
Default

If your issue is only at idle you need to look at the radiator fans. Make sure they are kicking up to high speed at idle and they are both working. You could test these with Nissans Consult. Not sure how you would do it without the Consult tool. Uprev or Ecutek may be able to do it.

I am going to ask a silly question. Did you remove the bleed screw out of the radiator when filling with antifreeze?
SouthArk370Z likes this.

Last edited by Spooler; 06-18-2017 at 01:42 PM.
Spooler is offline   Reply With Quote
Old 06-18-2017, 01:37 PM   #24 (permalink)
Premium Member
 
SouthArk370Z's Avatar
 
Join Date: Nov 2010
Location: South Arkansas
Posts: 8,435
Drives: 2014 Challenger
Rep Power: 324198
SouthArk370Z has a reputation beyond reputeSouthArk370Z has a reputation beyond reputeSouthArk370Z has a reputation beyond reputeSouthArk370Z has a reputation beyond reputeSouthArk370Z has a reputation beyond reputeSouthArk370Z has a reputation beyond reputeSouthArk370Z has a reputation beyond reputeSouthArk370Z has a reputation beyond reputeSouthArk370Z has a reputation beyond reputeSouthArk370Z has a reputation beyond reputeSouthArk370Z has a reputation beyond repute
Default

Quote:
Originally Posted by Rusty View Post
IMO a coolant flush, tranny flush are the worse 2 things you can do to a car. I've hardly ever heard a good thing about them It's mostly always been a horror story. Your's is just another one on the list of reasons why not to do it.


Chemical flushes worked when engines were made of iron but anything strong enough to eat the corrosion is strong enough to eat aluminum.

Quote:
Originally Posted by Rusty View Post
The bottom half of your radiator could be plugged from the scaling that got knocked loose/dissolved from the chemicals they used for the flush.
Very likely. And any other small passages.
Rusty likes this.
__________________
Steering Lock Links - Search The370Z Bookmarklet - FSM @ NICOclub
Mankind has progressed past the need for war but we haven't evolved that far. - NachoMahma
SouthArk370Z is offline   Reply With Quote
Old 06-18-2017, 01:42 PM   #25 (permalink)
Premium Member
 
SouthArk370Z's Avatar
 
Join Date: Nov 2010
Location: South Arkansas
Posts: 8,435
Drives: 2014 Challenger
Rep Power: 324198
SouthArk370Z has a reputation beyond reputeSouthArk370Z has a reputation beyond reputeSouthArk370Z has a reputation beyond reputeSouthArk370Z has a reputation beyond reputeSouthArk370Z has a reputation beyond reputeSouthArk370Z has a reputation beyond reputeSouthArk370Z has a reputation beyond reputeSouthArk370Z has a reputation beyond reputeSouthArk370Z has a reputation beyond reputeSouthArk370Z has a reputation beyond reputeSouthArk370Z has a reputation beyond repute
Default

Quote:
Originally Posted by Spooler View Post
If your issue is only at idle you need to look at the radiator fans. Make sure they are kicking up to high speed at idle and they are both working. You could test these with Nissans Consult. Not sure how you would do it without the Consult tool. Uprev or Ecutek may be able to do it.
Definitely worth checking before taking more drastic measures.

A non-contact tachometer will tell how fast the fans are spinning (may be able to borrow one at a parts store). Not sure how fast they are supposed to turn but that info may be in FSM. Or compare to another Z.
__________________
Steering Lock Links - Search The370Z Bookmarklet - FSM @ NICOclub
Mankind has progressed past the need for war but we haven't evolved that far. - NachoMahma
SouthArk370Z is offline   Reply With Quote
Old 06-18-2017, 02:04 PM   #26 (permalink)
A True Z Fanatic
 
Z_ealot's Avatar
 
Join Date: Sep 2010
Location: Albuquerque, NM
Posts: 2,045
Drives: 09 370Z Touring/Sprt
Rep Power: 10091
Z_ealot has a reputation beyond reputeZ_ealot has a reputation beyond reputeZ_ealot has a reputation beyond reputeZ_ealot has a reputation beyond reputeZ_ealot has a reputation beyond reputeZ_ealot has a reputation beyond reputeZ_ealot has a reputation beyond reputeZ_ealot has a reputation beyond reputeZ_ealot has a reputation beyond reputeZ_ealot has a reputation beyond reputeZ_ealot has a reputation beyond repute
Default

Quote:
Originally Posted by Spooler View Post
If your issue is only at idle you need to look at the radiator fans. Make sure they are kicking up to high speed at idle and they are both working. You could test these with Nissans Consult. Not sure how you would do it without the Consult tool. Uprev or Ecutek may be able to do it.

I am going to ask a silly question. Did you remove the bleed screw out of the radiator when filling with antifreeze?
Have checked this multiple times and both kick on high speed when the coolant temp hits about 214
Z_ealot is offline   Reply With Quote
Old 06-18-2017, 02:08 PM   #27 (permalink)
A True Z Fanatic
 
Z_ealot's Avatar
 
Join Date: Sep 2010
Location: Albuquerque, NM
Posts: 2,045
Drives: 09 370Z Touring/Sprt
Rep Power: 10091
Z_ealot has a reputation beyond reputeZ_ealot has a reputation beyond reputeZ_ealot has a reputation beyond reputeZ_ealot has a reputation beyond reputeZ_ealot has a reputation beyond reputeZ_ealot has a reputation beyond reputeZ_ealot has a reputation beyond reputeZ_ealot has a reputation beyond reputeZ_ealot has a reputation beyond reputeZ_ealot has a reputation beyond reputeZ_ealot has a reputation beyond repute
Default

Quote:
Originally Posted by Rusty View Post
IMO a coolant flush, tranny flush are the worse 2 things you can do to a car. I've hardly ever heard a good thing about them It's mostly always been a horror story. Your's is just another one on the list of reasons why not to do it. The bottom half of your radiator could be plugged from the scaling that got knocked loose/dissolved from the chemicals they used for the flush.
Flush was done before i swapped out the radiator and rest of system was filled and drained multiple times with distilled water to clear the system of the cleaner. Only thing that i didnt do is backflush the system with the thermostat off
Z_ealot is offline   Reply With Quote
Old 06-18-2017, 02:45 PM   #28 (permalink)
A True Z Fanatic
 
Join Date: Jun 2014
Location: Ga
Posts: 13,791
Drives: 2013 Nismo 370z
Rep Power: 2684392
Spooler has a reputation beyond reputeSpooler has a reputation beyond reputeSpooler has a reputation beyond reputeSpooler has a reputation beyond reputeSpooler has a reputation beyond reputeSpooler has a reputation beyond reputeSpooler has a reputation beyond reputeSpooler has a reputation beyond reputeSpooler has a reputation beyond reputeSpooler has a reputation beyond reputeSpooler has a reputation beyond repute
Default

Sounds like you are done and need to take it to someone with more knowledge than you. Just sayin.
Spooler is offline   Reply With Quote
Old 06-18-2017, 02:58 PM   #29 (permalink)
A True Z Fanatic
 
Z_ealot's Avatar
 
Join Date: Sep 2010
Location: Albuquerque, NM
Posts: 2,045
Drives: 09 370Z Touring/Sprt
Rep Power: 10091
Z_ealot has a reputation beyond reputeZ_ealot has a reputation beyond reputeZ_ealot has a reputation beyond reputeZ_ealot has a reputation beyond reputeZ_ealot has a reputation beyond reputeZ_ealot has a reputation beyond reputeZ_ealot has a reputation beyond reputeZ_ealot has a reputation beyond reputeZ_ealot has a reputation beyond reputeZ_ealot has a reputation beyond reputeZ_ealot has a reputation beyond repute
Default

Quote:
Originally Posted by Spooler View Post
Sounds like you are done and need to take it to someone with more knowledge than you. Just sayin.
Took it to a shop, they are the ones that suggested to swap the radiator and if that didnt work they suggested to do the water pump next
Z_ealot is offline   Reply With Quote
Old 06-18-2017, 04:46 PM   #30 (permalink)
Premium Member
 
SouthArk370Z's Avatar
 
Join Date: Nov 2010
Location: South Arkansas
Posts: 8,435
Drives: 2014 Challenger
Rep Power: 324198
SouthArk370Z has a reputation beyond reputeSouthArk370Z has a reputation beyond reputeSouthArk370Z has a reputation beyond reputeSouthArk370Z has a reputation beyond reputeSouthArk370Z has a reputation beyond reputeSouthArk370Z has a reputation beyond reputeSouthArk370Z has a reputation beyond reputeSouthArk370Z has a reputation beyond reputeSouthArk370Z has a reputation beyond reputeSouthArk370Z has a reputation beyond reputeSouthArk370Z has a reputation beyond repute
Default

Quote:
Originally Posted by Z_ealot View Post
Took it to a shop, they are the ones that suggested to swap the radiator and if that didnt work they suggested to do the water pump next
They should be able to check the radiator before deciding whether or not to replace. Same with the pump.

If the radiator is plugged with sludge, the block probably has some sludge buildup too.

I'm still not 100% sure that corrosion/sludge is the problem (although it sounds like the top candidate). If it were me, I'd inspect the radiator and pump before I started replacing parts. I'd do whichever was easiest first. You should be able to get a good idea of radiator condition by pulling the inlet hose and using your borescope.
__________________
Steering Lock Links - Search The370Z Bookmarklet - FSM @ NICOclub
Mankind has progressed past the need for war but we haven't evolved that far. - NachoMahma
SouthArk370Z is offline   Reply With Quote
Reply

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Hit and Run, Nissan GT-R. Suspect still not found. Maybe NAGTROC can help? EndyKwon Southern California Region 10 07-26-2013 09:42 PM
Scheduled maintenance: belt, radiator cap, brake fluid, water pump, fuel filter, p/s wdkwang Nissan 370Z Warranty / Scheduled Maintenance / Servicing / Repairs 4 05-08-2012 11:57 AM
2009 370Z's with AC Inverter, Sunload sensor, Heater water pump? ARFCOM Nissan 370Z General Discussions 2 08-03-2010 02:41 PM
Water pump puckman77 Engine & Drivetrain 4 02-15-2010 03:09 PM


All times are GMT -5. The time now is 02:20 AM.


Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.0 PL2