Occasionally, my idle will be high (around 1500rpm or so), and it'll stay that way for a while, and then later it'll drop down to normal (750ish rpm). Then maybe a day or even two days later it'll go back up to 1500rpm for a while. There really seems to be no rhyme or reason to it, and the only way to get it to go away seems to be to drive the car for a while, or sometimes leave it off for a long period of time.
ECU isn't throwing any codes.
Intermittent high idle (s13 240SX KA24DE)
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InsanityInc
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Sounds like your TPS might be borderline on contacts. Drop it down a hair and see if the idle jump goes away. It could also be the TPS is simply going out. Next time it gets stuck at 1500 rpms. back probe the TPS white wire while leaving it plugged in and car running. See what kinda voltage signal its sending back to the ECM. A bad one can register anywhere between 1v to over 3 volts at idle.
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InsanityInc
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Re: (NISTECH)
Hm... well, I've checked the TPS recently, but I can't recall if I've checked it WHILE the idle was high. I'll try that next time. Also, I know for sure it's not barely on the contacts or anything because it was reading WAY low before I adjusted it and still did it. But it could be bad, so I'll check that. Thanks.NISTECH wrote:Sounds like your TPS might be borderline on contacts. Drop it down a hair and see if the idle jump goes away. It could also be the TPS is simply going out. Next time it gets stuck at 1500 rpms. back probe the TPS white wire while leaving it plugged in and car running. See what kinda voltage signal its sending back to the ECM. A bad one can register anywhere between 1v to over 3 volts at idle.
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InsanityInc
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Re: (NISTECH)
I'll dig it up.NISTECH wrote:Dude email me if you still have my email.