Chasexj

Alright so I noticed a rough idle at stop lights, the RPMs that I've noticed don't jump up or down at all, I just replaced the plugs and wires and made sure to do one plug at a time so I know for sure I didn't mix up any wires, while replacing one of the plugs the wrench knocked the heater core valve and broke a hose connection, so easy fix I replaced the heater core valve. Before replacing the plugs and wires it seemed to run fine, now I'm getting the rough idle after doing the plugs and wires? Any help would be appreciated.

Windsor 90 Laredo

Stupid ?'s proper gap? And making sure u snapped the new wires on tight. And maybe you knocked a vacuum line off by accident. Simple bull sh** to check first ect.

BstrdXJ

Clean the throttle body and IAC valve, too.

Muaddib420

This cured my rough idle.

http://www.amazon.com/gp/aw/d/B00ER8...sr=8-2&pi=SL75

belvedere

What kind of plugs did you install?

cruiser54

Year?

Chasexj

It's a 92 and I installed champion plugs and omni start wires, I'll start checking out the easy stuff vacuum lines etc tomorrow, thanks for the help so far.

cruiser54

Have you looked inside the cap and inspected the rotor also?

Chasexj

Cap and rotor have been replaced, still have a rough idle. I took it in to a shop for a diagnostic and was told it was the distributor, but they didn't really seem to sure

freegdr

Name brand stuff or store brand .

Chasexj

I don't remember what brand the cap and rotor were but positive it wasn't the store brand, the wires however were the store brand "omni start" and plugs were champion

Chasexj

I'm currently gone right now, in the air force, when I get back I will try and clean up the IAC valve and see how much that helps, tune up shop told me I was having random misfires though, they checked all the plugs and wires and said all those we're fine, no wire mix ups or anything like that.

Chasexj

Alright guys I'm lost now, I cleaned the IAC valve pretty well, it was pretty dirty, put it all back together, didnt want to start the first time, started the second time and after letting off the gas it almost kills itself?! So seems like after cleaning the IAC it got worse?

EZEARL

IAC's could be shot.

Should get an ohm's reading of 40-80 when meter is connected to the outer two contacts and the same when connected to the inner two on the sensor.

Also pull the CTS and polish the probe.

Bustedback

A bad IAC motor won't cause a rough idle. Stalling or a high idle, but not a rough idle.