98 cobra giving me hellllll!

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stangbang411

New Member

Apr 6, 2009

23

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0

Jun 10, 2009

#1

• Jun 10, 2009

• #1

Ok here we go my car was running like a champ till the other day when it died on me and if i started it back up it wont even react to me pushing the gas sometimes i have to keep rapidly tapping the gas then take off and keep it at high rpms to keep it going that all of a sudden stopped then the other day the rpms would stick real bad when i shifted and not drop at all and when i push in my clutch or put it in neutral the rpm will jump to 1600 and sit till i take off again it gets worse as the car gets warm but sometimes cant notice when its cooler

 

LaserSVT

Got FB banned again for saying nards

Founding Member

Nov 29, 1999

9,391

3,538

233

Jun 10, 2009

#2

• Jun 10, 2009

• #2

So many things. Check the IAC and clean/replace it. Clean the blades on the throttle body. Clean the MAF meter (and it could be bad). Do you have a MIL?

 

COBRA90GT

Mustang Master

Sep 22, 2001

6,654

0

87

HOCKEYTOWN ® , MI

Jun 10, 2009

#3

• Jun 10, 2009

• #3

What mods do you have on the car? Any recent changes or mods (ie - chip/tune) ?

If not, your Idle Air Control (IAC valve) is a good place to start. May want to try cleaning and/or replacing it.

 

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Silver01NC

New Member

Jan 3, 2006

14

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Jun 11, 2009

#4

• Jun 11, 2009

• #4

bad contacts with chip?

I had similar problems which were caused by a plug-in chip: stalling, occasional high idle. I think the chip connections were not good, no idea why. Once the chip was removed the problems went away.

 

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stangbang411

New Member

Apr 6, 2009

23

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0

Jun 11, 2009

#5

• Jun 11, 2009

• #5

replaced the tps and iac the maf is not that old but it was a reman mods are 373s, cai, imrc delete, msd wires, im running the ngk plugs but they are farely new as well i do not have cats either it that would matter.

 

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Blown Spring GT

Member

Apr 12, 2003

175

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47

Spencer OH.

Jun 11, 2009

#6

• Jun 11, 2009

• #6

I bet you have a real bad vacuume leak. Check all you intake hoses the drivers side will split and cause the same problems.

 

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stangbang411

New Member

Apr 6, 2009

23

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0

Jun 12, 2009

#7

• Jun 12, 2009

• #7

?

im not pulling a mil im leaning towards maf for some reason they keep goin bad on this car ive been threw two but these symptoms seems to be a little similar but not quite the same any reason y it would keep goin bad i do not have any oil on my filter ive never oiled it once?

 

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coolrunning 96

New Member

Jul 20, 2006

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Jun 24, 2009

#8

• Jun 24, 2009

• #8

i have a some what of the same question except my 96 wont idle for that long with out it acting like its about to cut off. but i will tell i have not clean or replace the iac, maf or cleaned the throttle blades. the motor is high mileage say around 250k the odo. stop at 210k 2yrs ago. but besides that it runs great but just when sitting at a light to long is when it starts to act like it wants to cut off.