When I start my car in the mornings, the idle bounces around for a bit and settles at 1100rpm and the car then runs fine, I leave the car till I finish work, start it up and it goes to die out when I press the accelerator a bit and I get a very delayed rev reaction, I then drive it for a mile or so and the car runs fine, why does this happen, could it be a boost leak? or part of another idling issue?

 

The car will also pop whilst going down hill in gear when not pressing the gas, is this normal, I have a JWT eprom upgrade to handle single air intake, 555 injectors?

 

Other than the issues above, when the car is at normal temp it runs like a dream and when I put my foot down it will hit 1 bar of boost fine with no hesitation.

 

Any suggestions?

 

Thanks

mines na i have the same problem - was told to clean all the connecters for all the sensors that control air flow and mixture

mines na i have the same problem - was told to clean all the connecters for all the sensors that control air flow and mixture

 

Also clean the yellow connector and the temp sender on the top alloy water pipe at the front of the engine ,if it,s corroded this can cause a hesitation . HTH ;)

I have had a new wiring loom, will clean the temp sender and c if that cures it, why doent it hesitate every time I start it up?

What about the popping from the exhaust?

unburnt fuel?

yea probably

Is this normal, what would be causing it?

is your ambient temp reading correctly if its reading wrong the ecu will compensate by chucking too much fuel in, mine was doing this and i cleaned the sensor now its fine

is there a Z elf that walks around under the bonnet making sensers and connecters dirty and corroded? wtf? never happend on any other car iv owned

What about the popping from the exhaust?

 

Is your car decatted by any chance?

Is your car decatted by any chance?

 

Yes, I have a straight through system.

is your ambient temp reading correctly if its reading wrong the ecu will compensate by chucking too much fuel in, mine was doing this and i cleaned the sensor now its fine

 

Sorry if this sounds dull but where is the ambient temp reading?