rough idle

**89 vert** · 07-22-2007, 11:55 PM

just installed a new cobra upper and lower,matching throttle body and a 1" riser and the car pulls harder but idles like crap(very choppy, shakes the car badly) and the exaust fumes are so strong I need oxygen to work on it. Checked all vac lines 3 times, and cleaned the iac and set the tps to .9 volts. Any ideas??????

**coralcoupe1993** · 07-23-2007, 12:14 AM

Originally Posted by 89 vert

just installed a new cobra upper and lower,matching throttle body and a 1" riser and the car pulls harder but idles like crap(very choppy, shakes the car badly) and the exaust fumes are so strong I need oxygen to work on it. Checked all vac lines 3 times, and cleaned the iac and set the tps to .9 volts. Any ideas??????

Durring the swap did you break the black box on the fire wall?

**89 vert** · 07-23-2007, 12:18 AM

the black box to the left of the vac t? I will ckeck it now

**89 vert** · 07-23-2007, 12:21 AM

Originally Posted by coralcoupe1993

Durring the swap did you break the black box on the fire wall?

WOW, the box is not broken but the plug on the bottom was totally disconnected!! Its too late to fire it up because my neighbors are crabby but I hope this has something to do with it. What is it?? Thanks coral

**Viper_ed** · 07-23-2007, 09:20 AM

Originally Posted by 89 vert

WOW, the box is not broken but the plug on the bottom was totally disconnected!!

That will for sure cause the car to not idle.

**coralcoupe1993** · 07-23-2007, 10:05 AM

Originally Posted by 89 vert

WOW, the box is not broken but the plug on the bottom was totally disconnected!! Its too late to fire it up because my neighbors are crabby but I hope this has something to do with it. What is it?? Thanks coral

It will run great now!

**89 vert** · 07-23-2007, 08:30 PM

Well, after pluggin the map sensor in the car still will not idle. Checked all vac lines + pcv and all are ok 40-45 lbs gas press at the motor. pulled 1 plug to check for carbon and it was normal. Yesterday I ran the car hard with the map sensor off, I hope I did not damage anything. The raw fuel smell went away so that problem is fixed, and it runs great through the gears but just will not idle. I also disconnected the battery overnight to reset the computer. Any suggestions?? I have pulled out all my hair and my wife is ready to divorce me(might not be a bad thing)

**91-350-RS** · 07-23-2007, 08:49 PM

Well, broham. u gotta keep ur head up and dont worrie about the wife ill take care of her!

**coralcoupe1993** · 07-23-2007, 09:09 PM

Originally Posted by 89 vert

Well, after pluggin the map sensor in the car still will not idle. Checked all vac lines + pcv and all are ok 40-45 lbs gas press at the motor. pulled 1 plug to check for carbon and it was normal. Yesterday I ran the car hard with the map sensor off, I hope I did not damage anything. The raw fuel smell went away so that problem is fixed, and it runs great through the gears but just will not idle. I also disconnected the battery overnight to reset the computer. Any suggestions?? I have pulled out all my hair and my wife is ready to divorce me(might not be a bad thing)

The plugs looked fine? Hopefully it just needs cleared out.

**89 vert** · 07-23-2007, 09:10 PM

:upyours:

Originally Posted by 91-350-RS

Well, broham. u gotta keep ur head up and dont worrie about the wife ill take care of her!

Just replaced all plugs, new wires will be goin on tommoro. Also checked the check engine light to see if it works and it does not. Can I check the codes, maybe I fried my o2 sensors????

**coralcoupe1993** · 07-23-2007, 10:48 PM

Originally Posted by 89 vert

:upyours: Just replaced all plugs, new wires will be goin on tommoro. Also checked the check engine light to see if it works and it does not. Can I check the codes, maybe I fried my o2 sensors????

I had an 88 LX that I did that with. I broke the MAP sensor though. It took a tune up and some driving to clear it out. I ran the car to work after I did that, I was on the highway so I didnt notice it untill my tank of gas was almos gone

. When I pulled off, the car idled like it had a big cam.