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High Intermittent Idle Rb25de

Hanzie

By Hanzie,
in General Maintenance

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Hanzie Enthusiast

Hanzie

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Posted

I got a rb25de r34 neo n/a, when I start the car it idles on 2000rpm, after about 5 minutes I can turn the car off and start it up again and it will idle like normal, when it's 2000 rpm, disconnecting the tps will lower it to normal aswell, what could cause this?

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hardsteppa Grand Master

hardsteppa

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idle control is opening to full, your base idle is fine if it idles normally once idle control is disconnected. If idle control is still capable of working correctly sometimes then it's either sticking mechanically, so clean it, or it's reacting to a voltage received. Have you checked tps voltages? if not, do so and make sure they're in spec.

If you're not prepared to do that, then my other advice is it's probably your brake pads, or the boot lid closer...

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Hanzie Enthusiast

Hanzie

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So I have checked the voltage output of the tps, both plugs (brown and grey) and the brown one I think is giving to much power to the signal, it reads as such,

Brown plug

Negative- 0.02

Signal- 2.62

Positive- 5.13

Grey plug

Negative- 0.03

Signal- 11.15

Positive- 0.03

Active signal wire on brown plug- 0.71

Wide open throttle- 4.20

Does this look right? I couldn't really find any specs other then active signal and WOT, which seem in spec

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