12-30-2022, 09:29 PM
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#4 (permalink)
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Base Member
Join Date: Jul 2022
Location: San Diego
Posts: 2
Drives: 2009 370z 6mt
Rep Power: 3
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Quote:
Originally Posted by SouthArk370Z
What Chuck33079 said. Most modern cars are very good at self-diagnosis, but they're still not perfect. Hook up a code reader, check for DTCs and pending DTCs (write them down, if present), clear DTCs, see what happens.
If car is still idling high after resetting DTCs, several DIYs have been posted on idle relearn. If you can't find one using the site's search, try any web search engine and add "site:the370z.com" to your search string. The high idle makes me think the problem may be with one of the TBs - hopefully it was just a glitch and won't crop up again.
If the P0300 reappears, then it's probably time to clean MAFs and TBs, check plugs, etc (or visit a mechanic).
The FSM is an invaluable resource for trouble-shooting the 370Z. Link in my sig.
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What if I've cleaned and repositioned throttle bodies, cleaned MAF sensors, replaced pcv valves, spark plugs and ignition coils and still have the code and high idle
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