Lost engine coolant

floydfan

I was driving to my DZA club meeting on the Loop 202 freeway. Cruising about 65-70 when all of a sudden, my check engine light came on and my automatic tranny started downshifting by itself and I had no throttle response. I pulled over to the side and shut it down. Sat for a moment, and decided I would try to get off the freeway. Started the engine, and all seemed good, so I took off for the next exit. Then I noticed the temperature gauge was higher than normal and climbing. Then I lost power again and I decided I better shut it off as the temperature gauge was still climbing. After i stopped on the side of the freeway, I noticed steam coming out from the back of the hood. I called AAA to get a tow. They asked if I was in a safe spot and I told them I was on the side of the freeway next to a travel lane. I was westbound almost under the Center Street overpass. They said they would set up a tow as a priority. I waited 50 minutes and called AAA again to see where is the tow truck. While I was on the phone with AAA, I saw I had a text coming through. It was the tow company, and they had been dispatched to 202 and Southern Avenue, which is about 5 miles from where I was. They said they would send the tow driver but he was about 15-20 mintes away. After I had been on the side of the freeway for 1 hour and 20 minutes, my priority tow showed up.

There is a plastic coupler that joins two heater hoses, and it had broken and I lost the engine coolant. To replace the plastic coupler and all three heater hoses the intake plenum had to be removed. Almost $500.00 labor and the entire repair was $818.19. My 370Z is a 2013 model with 74,651 miles. The plastic coupler is a common failure of the VQ engine.
I also complained to AAA about the mixup, and they have given me a $99.99 credit on my next renewal.

Rusty

Z1 makes a replacement piece that it made from aluminum.

https://www.z1motorsports.com/z1-pro...aaf37dc50a426a

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Averying

Your local auto parts store likely carries an aluminum variant as well. Dorman #47291. In case you need the part quickly to get the car back up and running, and it’ll perform the same thing as the Z1 piece


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floydfan

Thanks for the advice. I had it fixed prior to my post. I recall that there was an air bleeder on my 350Z that I used to have. I didn’t realize that the 370Z had one. The repair shop showed me a picture of the coupler, but it didn’t look like it had a bleeder valve, but it makes sense that it would have one. Maybe the picture they showed me was from the bottom of it. I doubt that I will own this car if it becomes an issue again. I only put 3-4K miles on it in a year now.

floydfan

I have told some DZA club members about the plastic bleeder valve and they have or will purchase metal replacement bleeder valve\couplers. Way to go Nissan. Saved a couple pennies during assembly. I wonder has many other Nissans use the plastic bleeder valve\couplers.

abm89

Glad you got it fixed. I need to stop procrastinating on this maintenance. Im at 155K now

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nis350

thanks for the info.

Is this a perfect fit? Can this be replaced without removing the throttle body?

Tractionless

The repair shop lied to you as the plenum doesn't have to come off. Strut tower brace and rear beauty cover at most was all it took for my DIY. The part is $20

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NorthStyle

Yes and does not require removal of the throttle bodies/intake piping

Futzpah

I'm a little late to the party, but what shop did you take it to? I'm over in Chandler, and I'm having bad luck finding a good shop. Thanks!