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Not Revvinghigh When Cold.

700HP-GTR33

By 700HP-GTR33,
in General Maintenance

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700HP-GTR33 Mentor

700HP-GTR33

Posted
Posted

Hello all..

I start my car in the morning to see it sit at 950 to 1000rpm...temp outside s 20oc.(RB26)

It was previously after idling for 15 to 20 seconds decides it needs to warm and idles higher over 1200rPM.

This has gotten worse and in the mornings now it just sits at 950 to 1000RPM.

Can a water temp. sensor be at blame...do these die slowly....or is it something else?

Can I replace it myself or does the motor have to come out..lol

Any help will be appreciated.

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blind_elk Grand Master

blind_elk

Posted
Posted

Ordinarily, when the water temp sensor dies, the car still has good cold start but runs ultra rich at operating temp (ECU thinks the engine is still cold, and overfuels).

Poor cold start could be the Cold Start (Air) Valve.

Kinks Grand Master

Kinks

Posted
Posted

I've heard the opposite about water temp sensor, that the car drives fine when warm but like an absolute dog when it's cold. maybe there are 2 failure modes.

GTR? yeah motor out job mate.. you gotta pull the motor out to do anything on a GTR :banana:

700HP-GTR33 Mentor

700HP-GTR33

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Posted

I have been told that....even if the revs are at 950 when cold..more fuel is being delivered,,,could this be normal...

The car is not missing or stalling at this rev..

I cleaned the pod filters last time and the start was healthy...1500rpm...but this went back again to the same revs after a few weeks......

Might try this again...

I am using a power fc...can anyone tell me what the figures should be in the idle/temp.area of the program and also the

acc....off and on ....

:banana:

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