Please help :Cold start idle up problem

[marc mtp]

Please help , the leggy doesn't idle up for its cold start. But after a 5 min drive turned off and restarted later it sort of does.

I got evoscan had code 25 (baro) so I change the maf done the battery reset but still no difference but no codes either ,any ideas would be appreciated

 

[Baba Galant]

Please help , the leggy doesn't idle up for its cold start. But after a 5 min drive turned off and restarted later it sort of does.

I got evoscan had code 25 (baro) so I change the maf done the battery reset but still no difference but no codes either ,any ideas would be appreciated

That sounds like a common fault, the idle speed controller, located directly below the throttle opening.
Check that it's plugged in, sounds silly.but mine was accidentally disconnected, test the coils for correct value and check and clean the nozzle that blocks or opens the airway to attenuate the idle speed.
Lots of posts on this culprit and easily replaced.if faulty for about 120 delivered.
Unless.you have flashing dash lights disregard error 25 etc.

 

[marc mtp]

Thanks I might have to have a better look at that as it doesn't seem to rev up for the a/c either .
When it's cold it struggles at about 450 rpm until warm, then 650rpm warm in gear and around 800rpm in park.
If in park warm at 800rpm when a/c compressor kicks in it drops to around 650rpm with the load on it.
So you maybe right I will get one thanks

 

[raj]

had that issue just the other day,the idle control just needs cleaning if it's still doing the same thing after just re place it

 

[marc mtp]

Yeh I cleaned it there was a bit of crud on there . Little test of tps seems ok . Now it's idling too high might get a new iac

 

[raj]

Don't need to replace it
Leave the car idling till it reaches working temperature and adjust the idle screw to bring down the rpm