I have a 92 si hatch an as soon as i turn the car on its jumps up tp 3,000 RPM's
I Don't know what wrong. The engine isn't not trowing any codes,when i ask people what could it be they say it is the sensor behind my intake manifold. Are they wrong? what could it be?

Thats the sensor


Better shot

 

Is your throttle cable sticking?

 

are they saying it's the TPS sensor? I would think distributor, mainly the ignitor or coil pack.

 

Nah i dont believe so cause it will go up to 3,000 Rpm (sometimes lower) an will go back down an then go right back up again.
Its Weird

 

It may be your IAC (intake air conroller) not working right letting too much air past the throttle plate causing high idle. cant say for sure though.

 

no way man! never will the distributor cause idle to be at 3k rpm

 

IACV = Intake Air Control Valve. $125 new or $50 used.

 

where is the IAC (intake air conroller) located at under my hood so i can see if thats the problem

 

Mine did the same thing and it was the intake manifold gasket had a hole in it. Take some carb cleaner and spray around were the intake manifold meets the head and if it revs up then you will know....

 

Intake Air control valve. Not intake controller valve.

Take the IAC off and tighten the plastic screw back in. That sound fix it. Also check the TPS senors. Make sure the voltage is at .4 for idle.

PM me if needed. I'm a litte drunk

 

also just try cleaning the IACV. take it off and shoot some carb cleaner in there. I've even used simple green before, let it soak, rinsed it out really well and dryed it out with a hairdryer, worked like a charm and cost next to nothing

 

Where the hell is the thing u guys are calling the IAVC located?


[Modified by JDMRob, 4:02 PM 1/23/2003]

 

Mine is doing the same thing!!

 

maybe a vacuum leak

 

Up Up Up

 

It's your first picture.

 

What I was thinking.

 

any other suggestions on what it could be??

 

He;s got it. And if you spray around the intake mani with carb cleaner, the revs will drop, not rise. Pull of the IAC- it's the sensor behind the intake mani that you showed in your pic. There are 3 coolant lines and 2 12mm bolts. Pull it off. There's a plastic spring which regulates the air into the intake mani. There's also goin to be a metal screen. This is most likely clogged. Clean it up good before your ecu thinks it's bad. Carb cleaner, simple green, whatever JUst get it nice and clean, reset your ecu, and fire it up.

 

does it just idle there??.. try playing with the IAS

 

actually, before you pull off the iac...get the car to operating temp, and pull the plug off of it. If the idle goes down, then that's your problem. If not, then look elsewhere. This will be the easiest way to tell you if that's it.

 

Iwould defenetly check the sensor, its adjustable
________
MERCURY CAPRI PICTURE

 

Thanks for all the info i will check it out tomorrow an see if i can fix it my self...... Any more suggestions Greatly Appreicated

 

vacuum leak 0wnzzzzzzzzz j00000!!!!

 

Only 2 coolant lines on mine, but it might be different on the CX