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Lumpy Idle In My Rb25det

teazn_r33

By teazn_r33,
in Engines & Forced Induction

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teazn_r33 Mentor

teazn_r33

Posted
Posted (edited)

k people i have just put a rb25det out of a stagea whole thikng works fine apart form the idle its lumpy and all over the shop i have so far narrowed it down to the coolant temp sensor cause when i unplugg it it works better liek picks up the revs if i have a small bend in the hose for one of the i think heater lines would that effect it

i need help on this one im not sure what else to do if i unplugg the wire it wont start with it off but runs fine if you unplug it if already running

where else should i be looking

CAS

im lost someone help me no mech can help me cause i live in the sticks (mildura) poo

Edited by teazn_r33
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https://www.sau.com.au/forums/topic/207245-lumpy-idle-in-my-rb25det/
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-_-StRyDeR-_- Experienced

-_-StRyDeR-_-

Posted
Posted

im not 100% on this but... if the coolant temp sensor isnt working and just tells the ecu the car is cold, then it puts more fuel in. so in your case, the ecu might be thinking the engine is still cold so adds more fuel and is slightly flooding it.

make sence?

CJ

stolen_s15 Mentor

stolen_s15

Posted
Posted

This is what I'm thinking also, see if you can borrow a working temp sensor and check if yours is stuffed.

im not 100% on this but... if the coolant temp sensor isnt working and just tells the ecu the car is cold, then it puts more fuel in. so in your case, the ecu might be thinking the engine is still cold so adds more fuel and is slightly flooding it.

make sence?

CJ

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