Stalling Problems.

When I pulling up at a set of traffic lights my engine occasionally starts revving between 300 and down to 900 with the oil pressure also going up and down and then it stalls after a restart all is back to normal. it's happened twice now both times after about a hour of driving. the car pulls ok after and before.

Any Ideas?

As this is my daily drive I need to get this sorted, is there anything I should be checking?

Ive been having the same problem mate. even this morning on the way to work...started the car and it was idling lower than usual. everytime i stopped the revs just dropped. Didnt stall though (touch wood).

Been told it could be idle control valve needs a clean, pressure hoses leaking, dodgy petrol.

Be interesting to find out what it is.

You got UK spec mate?

Surj

Surj,

Thanks for the reply I was beginning to think this sort of fault never happens on Supra's.

I've got a J-spec, I always put Otimax in, where is the Idle Control Valve, I was thinking of checking all the vacuum pipes, it was similar to when my manifold pressure pipe blew off, the only thing is I can’t check when it stalls if there is smoke because when I restart all is ok again.

Mmm from what i know this is a common thing. Do a search on idle control valve, theres some pics on here of the valve and how to clean it. I gave mine a quick clean but still doing it. might give another go and soak it this time.

My guess is the hoses leaking so ill be checking mine.

Surj

here you go i tryed cleaning mine but its hard to take of so gud luck

Get this moved to technical fella you will get a more definitive answer.

The idle control valve is located at the back of the intake manifold, and on the left as you look in to the engine bay.

Picture of location here CLICK ME

Have you got any fault codes stored ?

How are your plugs ?

I have the same problem. Mine has never stalled though and a thorough clean of the ICV didn't help either.

This can be attributed to overfuelling, the engine has trouble returning to an idle. You can check your o2 sensor to see what it's telling the ECU.

-Ian

Had my O2 sensor checked and was fine. But tell you the truth mine only happens once in a blue moon so im just living with it!

Surj

This gives me loads to go on with, did a search on the Idle control valve I can see there is quite a bit about it out there.

if it's a faulty O2 sensor looks like I'll need to get the car mapped again, as I was running rich, I had the APEXI S-AFC II tunning altered, if my O2 sensor is faulty I then get it fixed will I be running lean?

Please can this be moved to the Tech section?

Thanks for your help guys

Ross