9 replies to this topic

[4G63JET]

hey guys

Was driving my GSR (it is essentially stock apart from exhaust, filter, highflow turbo) today, all was well then I seen the check engine light come on. Car still drove fine. About 3 minutes later while I was stopped at lights, I thought - ill turn the car off and turn it on again maybe the light was up there in error -

after that the car would not start up and idle again - it cranks, starts up for about 3-4 seconds (it feels sluggish to rev) then it just instantly cuts out (as if ignition has turned off).

I checked all intercooler pipes, seem to be fine and if it was cracked or leaking i would assume the car would run rough not just cut out.

Checked vac lines, to my eye they seem fine.

Checked and cleaned Air flow meter and plug - this is more than likely the issue but I have spent hours on the net trying to find out any info with no luck.

Ive run outta options - has this happened to anyone before. I dont think its a fuel issue cos the car starts every time and theres spark - its just it refuses to idle for more than a few seconds.

any help would be much appreciate.d

[htgsr]

My ute done this the other day because I had forgotten to plug the AFM back in after checking the air filter so its possible that is your problem, I have a GSR AFM sitting in the shed your welcome too if you want to try another one? Flick me a PM if you want it.

[Ian91]

It can also be the idle stepper has pooed itself, I've had a very similar problem on 2 cars and it turned out to be the idle stepper, hope this helps

[leadfoot]

or even a faulty power transistor pack.

[jack be nimble]

it will start and idle ok without afm even plugged in. not perfect but it would get you home. i dont think it your afm.
if it is isc it should run with foot on throttle but as its title suggests you will have no/poor idle control

[4G63JET]

so where is this ISC valve - how can I replace it and is it interchangeable between other mitsus?

As one of the fellas said -wehn i disconnect the Air flow meter makes no difference so maybe its not that - and now that I think of it - the car WAS starting to have some low idle issues at times at the lights recently.

regards
Kim

[Ian91]

Idle speed control is the black thing that is on the throttle body under the intake hole, goes in where the heater hoses do under the throttle body, they are the same as standard lancers and some magnas I'm pretty sure

[Ian91]

Idle speed control is the black thing that is on the throttle body under the intake hole, goes in where the heater hoses do under the throttle body, they are the same as standard lancers and some magnas I'm pretty sure

[4G63JET]

still no go.

Ive been told the thing will idle even with a faulty AFM. Same goes for the Idle stepper

The crank angle sensor works fine

Thing just starts up idles for 2 seconds then dies like the keys been turned off. Checked all the vac lines.

Ahhhhhhhh :S

[caged]

Check what code the engine light came on for before changing parts. Also because you have unplugged the afm remember that when it comes up as a code.