Replaced O2's, Cleaned MAF. Idle Still Sucks.

brentwoodboy

New Member

Nov 25, 2002

472

0

0

Brentwood, TN

Feb 9, 2004

#1

• Feb 9, 2004

• #1

My idle searches from about 600-800 rpm. My most recent mod is the off-road H. Do I have an exhaust leak? I have a CE light also, but my car will not connext and give codes to any scanner . TPS has been replaced also. Any guesses?

PS. CE light comes on after warm up, but my 02's are brand new...

 

E

ejjmustang

New Member

Jan 14, 2004

70

0

0

Pennsylvania

Feb 9, 2004

#2

• Feb 9, 2004

• #2

brentwoodboy said:

My idle searches from about 600-800 rpm. My most recent mod is the off-road H. Do I have an exhaust leak? I have a CE light also, but my car will not connext and give codes to any scanner . TPS has been replaced also. Any guesses?

PS. CE light comes on after warm up, but my 02's are brand new...

Click to expand...

My car does the same thing but I don't know what the heck it is. Does miss at all??

 

Rootus

Officially Addicted

Feb 8, 2003

6,659

1

0

Portland, Oregon

Feb 9, 2004

#3

• Feb 9, 2004

• #3

I would figure out how to get the codes, since you definitely have something going on there. You don't need a scanner, you can also do it with a paperclip (do a search). Have you gone to autozone -- they'll pull the codes for free...

 

S

Silver85TC

New Member

May 28, 2003

130

1

0

Feb 9, 2004

#4

• Feb 9, 2004

• #4

You're Engine Coolant Temp (ECT) sensor may be shot (tells the computer your engine is cold/hot when its not!). They get lazy over the years....just enough to screw up your idle, but not enough out of range to set off your CEL.

Cheers.

 

ChingoChee

Founding Member

Jan 28, 2002

366

0

0

Fraser, MI

Feb 9, 2004

#5

• Feb 9, 2004

• #5

I had a similar problem. I cleaned my MAF and replaced my O2 sensors and my TPS. Turned out that my old but newly cleaned MAF was still faulty, so I threw in a brand new one and it fixed the idle 100%. A new stock MAF is only 50-60 bucks, so it might be something to consider. Good luck.

 

Slow5.0

Active Member

Feb 13, 2003

2,554

0

46

Portland, OR

Feb 10, 2004

#6

• Feb 10, 2004

• #6

I know whats wrong , I had same problem like you , HEGO fuse is blown, check Under steering column/ under dash HEGO fuse thats #10 20A, and meybe you change O2sensors for nothing , just like me

 

brentwoodboy

New Member

Nov 25, 2002

472

0

0

Brentwood, TN

Feb 10, 2004

#7

• Feb 10, 2004

• #7

Thanks, but keep em' comin. Also, I replaced my ECT this summer.

 

red94fiveo

New Member

Apr 12, 2003

1,269

0

0

Wichita, KS

Feb 10, 2004

#8

• Feb 10, 2004

• #8

I also had the same problem and i wound up being a bad TPS (this was at 66K miles). This was when I first bought my car so I had the dealership fix it b/c I didn't know much about the car. For the $275 they charged me for a new TPS I could have bought a Ford Racing 65mm T-body which comes with a new TPS, just some food for thought.

 

brentwoodboy

New Member

Nov 25, 2002

472

0

0

Brentwood, TN

Feb 10, 2004

#9

• Feb 10, 2004

• #9

I also have a new TPs, sorry I didn't mention that.

 

984.6gt

Founding Member

Jul 10, 2002

2,806

0

46

Sugar Land

Feb 11, 2004

#10

• Feb 11, 2004

• #10

600-800 is not that bad, should be able to live with that, anything under 900 is decent, I have see guys go from 500-1500, now THAT is an idle problem.

 

Kdizzite

New Member

Sep 13, 2003

251

0

0

West Bloomfield, MI

Feb 11, 2004

#11

• Feb 11, 2004

• #11

I had this problem and i replaced the sensors, and cleaned the filter and maf sensor. It ended up being that when i put the IAT sensor back in my cai tube it wasnt completly sealed, and that tiny leak was enough to make the idle surge.