Car won't rev past 2.5k, idles above 1k.

WillVHR · 09-02-2020, 12:05 PM

So I replaced the extension harness with a brand new one yesterday. So far so good. No issues at all. Drove the car for 10 minutes. Shop is going to drive the car for the next few days to make sure everything is good to go. Will post update if anything happens.

Optimiser · 09-03-2020, 12:15 AM

Quote:

Originally Posted by WillVHR

So I replaced the extension harness with a brand new one yesterday. So far so good. No issues at all. Drove the car for 10 minutes. Shop is going to drive the car for the next few days to make sure everything is good to go. Will post update if anything happens.

Expect a P1239 when you least expect it if you're using a TB ext harness. This has been my experience.

SouthArk370Z · 09-03-2020, 10:35 PM

Quote:

Originally Posted by Optimiser

Expect a P1239 when you least expect it if you're using a TB ext harness. This has been my experience.

Just a guess here but the extension may change the wiring enough that it is acting like an antenna and picking up noise from the other electrical systems. I'd try shielding the harness* - but that may be more work than it's worth.

*Edit: As much of the TB wiring as you can, not just the extension.

Optimiser · 09-09-2020, 01:01 AM

Quote:

Originally Posted by SouthArk370Z

Just a guess here but the extension may change the wiring enough that it is acting like an antenna and picking up noise from the other electrical systems. I'd try shielding the harness* - but that may be more work than it's worth.

*Edit: As much of the TB wiring as you can, not just the extension.

I think people have done this and it still isn't 100% reliable.

09-02-2020, 12:05 PM	#1 (permalink)
WillVHR Base Member Join Date: Feb 2012 Location: Irvine, CA Posts: 169 Drives: 2009 G37S 6-MT Rep Power: 15	So I replaced the extension harness with a brand new one yesterday. So far so good. No issues at all. Drove the car for 10 minutes. Shop is going to drive the car for the next few days to make sure everything is good to go. Will post update if anything happens. SwedeZ likes this.

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