eating gas rough idle missing when cold

[rottonrattt]

i don't know whats wrong with my car its acting funny erratic idle

[rottonrattt]

i was just wondering if somone knows how to check a intake and plenum for air leaks????i just got my car out the shop it runs faily well but it idles a little high and has a bit of a radom putt in it.idles at 1200 cold and 1000 hot please help me thax!!

[AutostradaVR4]

Irradic Idle is probably your IAC. DSMISC.com is the cheapest place to get them.

if your timing was a little off it wouls run crappy. If it was more than a little off you would bend valves.

EDITED. the site is DSMISC.com...

[AutostradaVR4]

what did u have done at the shop? could be you need a new plenum gasket, could be you just need to dial down the idle a bit, yould be you need to loosen the throttle cable.

[rottonrattt]

i jad the engine replaced had timming belt water pump rear seal and plugs .how do you adjust the idle ??

[press1 for English]

"If it was more than a little off you would bend valves."???

You can not bend valves with incorrect ignition timing.

[rottonrattt]

oh yeah the engine was in a automatic they had to change the fly wheel maybe thats my problem i think autos might idle higher.am i right?

[AutostradaVR4]

whole engine replaced?! well, could be a lot of things..start with the easiest.
There's 2 bolts on the back of the plenum that hold the throttle cable. Loosen it and push it all the way towards the throttlebody, then see what your idle's at. (make sure it's fully warmed up) if that fixes it, you know that was the problem. That bracket should be adjusted loose enough so that it's not putting any tension on the throttle cable...but tight enough so the cable doesn;t have alot of slack. Try this first then let us know.

warm Idle should be around 600-800, regaurdless of transmission. flywheel wont make a difference either.

[AutostradaVR4]

Originally Posted by press1 for English

"If it was more than a little off you would bend valves."???

You can not bend valves with incorrect ignition timing.

he said nothing of ignition timing, so im assuming he talking about the timing belt, with WILL bend valves if it's off by more than a few teeth. Valve, meet Piston; Valve loses.

[rottonrattt]

ok tried it it the about the same it at 900 rpm i also tried to adjust the idle cntrol scew i tightened it all the way down and it seems like it readjusted back to 900

[rottonrattt]

also i do have a strange noise coming from the driver side i just checked this noise and i think it is th ac condenser (pump) when i turn the ac on the thing way making i real high pitch squeal

[rottonrattt]

and yes i was saying if it was off by a tooth or off by alot i had timing belt replaced and i just wanted to know if the shop had it on right i have a random popping noise out exhaust at idle and a asmall puff of smoke its not real thick or dark though!!

[toddrs93]

Originally Posted by rottonrattt

and yes i was saying if it was off by a tooth or off by alot i had timing belt replaced and i just wanted to know if the shop had it on right i have a random popping noise out exhaust at idle and a asmall puff of smoke its not real thick or dark though!!

that also sounds like a misfire or wrong firing order (plug wires crossed), if its a fairly loud noise

[Stealthee]

Originally Posted by AutostradaVR4

Irradic Idle is probably your IAC. DSMISC.com is the cheapest place to get them.

if your timing was a little off it wouls run crappy. If it was more than a little off you would bend valves.

EDITED. the site is DSMISC.com...

Rock Auto is cheaper than DSMISC. They have them there for $70.

[rottonrattt]

could it be a fuel problem? the car sat for 6 month in storage before i cou;d afford to get her fixed iv only put like 3 gallons of new fuel since i got it out the shop i did put fuel injector cleaner in it.do you think this could cause it to do this??