Help!! my mustang has a really ****ty idle, i dont have a clue what is wrong.

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venomm95

New Member

Oct 15, 2006

3

0

0

Oct 25, 2006

#1

• Oct 25, 2006

• #1

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please help me
my car has a real ****ty idle, it idles around 250 RPM, yes that is two hundred and fifty, in the middle of 500 and 0 RPM. when i hit the throttle, the engine doesn't rev until i let it out. My bro said that i was throwing some codes, i just wanted some other opinions before i started messing with it.
Thanks everyone for your help.:SNSign:

 

Adam95GT

New Member

Aug 14, 2006

2,564

3

0

Burlington, NJ

Oct 25, 2006

#2

• Oct 25, 2006

• #2

Check the codes... posibly turn up the idle and maybe yout TPS

 

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cbarr300

Member

Jun 6, 2006

746

0

17

goose creek, SC

Oct 25, 2006

#3

• Oct 25, 2006

• #3

250? our cars can still run at that rpm? lol

I'd definately check your tps.

Have you recently done anything to your car or is it just "from out of nowhere."

 

95opal

5 Year Member

Nov 16, 2004

449

20

39

Oct 26, 2006

#4

• Oct 26, 2006

• #4

pull the codes and try setting you idle
http://www.muscularmustangs.com/idlereset.php
good luck

 

1TallMF

New Member

Apr 17, 2006

955

1

0

Montreal

Oct 26, 2006

#5

• Oct 26, 2006

• #5

Wow, mine would stall at anything below 500...
Yeah get the code, otherwise we will just make you run in circles.

 

HISSIN50

"How long does it take to get help in here?

15 Year Member

Nov 29, 1999

31,179

34

129

Oct 26, 2006

#6

• Oct 26, 2006

• #6

You're seeing the inaccuracy of the factory tach. It won't idle at 250 RPM. This is why mechanics use a diagnostic/mechanics tach instead of the stock one when setting idle. My OEM tach (as best I can interpolate it) reads ~150 RPM+ off from what the computer sees.


Another vote to have the computer provide clues. Pull codes.

Good luck.

 

MI95Cobra

New Member

Aug 20, 2006

451

1

0

Oklahoma City

Oct 27, 2006

#7

• Oct 27, 2006

• #7

check your timing...put it on a timing light....it should be around 14deg.....

 

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venomm95

New Member

Oct 15, 2006

3

0

0

Oct 27, 2006

#8

• Oct 27, 2006

• #8

Thanks everyone for your replies. i checked the codes and my mass air meter wasn't working properly and my throttle body wasn't working.

 

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BadAndy

Founding Member

Feb 21, 2001

766

0

0

Ohio

Oct 27, 2006

#9

• Oct 27, 2006

• #9

take the mass air off and clean it with carb cleaner and do the t-body also

 

HISSIN50

"How long does it take to get help in here?

15 Year Member

Nov 29, 1999

31,179

34

129

Oct 27, 2006

#10

• Oct 27, 2006

• #10

Peoples' advice will vary depending uipon the exact code you got and when you got it (KOEO or KOER).
If you clean the IAC, I'd stay clear of products with Toluene.

Good luck.