98 Mustang GT - Starting/Running Problem???

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csudhoff

New Member

Dec 23, 2006

4

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0

Dec 23, 2006

#1

• Dec 23, 2006

• #1

Having some problems with our 98 Mustang Gt 4.6 V8... everything has been great with the car. I am experiancing the following problem and I believe its the battery but wanted to make sure.

Here is whats happening:
1. insert key
2. turn ignition
3. car starts
4. RPMs immediatly drop like and the car dies, engine shuts off.

I noticed the battery terminals were very corroaded, I cleaned them with a wire brush and still same problem. I think the battery has never been replaced. My g/f bought the car new in 98 and it has 98K on the car.

Any ideas? Am I correct about a possible new battery? Any other things I should be looking at?
Any help is appriciated!

Thanks in advance!
Craig - I'm new here by the way :SNSign:

 

Turbo92PGT

Member

Feb 17, 2003

746

0

16

Auburn Washington

Dec 23, 2006

#2

• Dec 23, 2006

• #2

Check to make sure your IAC valve is plugged in. (on the plenum near the throttle body). Check to make sure your MAF is plugged in and there are no air leaks in the intake tract. Good luck!

 

d98gt

Founding Member

Mar 14, 2002

4,505

59

204

SE Texas

Dec 23, 2006

#3

• Dec 23, 2006

• #3

The IAC is failing on you. You can take it off and give it a cleaning to see if that helps. I cleaned mine over 2 years ago and haven't had a problem since.

If you need a picture of where this is located, just ask

 

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csudhoff

New Member

Dec 23, 2006

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Dec 24, 2006

#4

• Dec 24, 2006

• #4

d98gt said:

The IAC is failing on you. You can take it off and give it a cleaning to see if that helps. I cleaned mine over 2 years ago and haven't had a problem since.

If you need a picture of where this is located, just ask

Click to expand...

Thanks so much for the heads up, I think I know where this is. Can you post a pic of it to be sure?

Also did you just unbolt it, clean and reinstall?

Thanks again!

 

four six

Member

Jan 19, 2006

506

2

18

Hobart, IN

Dec 25, 2006

#5

• Dec 25, 2006

• #5

csudhoff - Also did you just unbolt it, clean and reinstall?

Yup just those two bolts and gasket


BTW Welcome to :SNSign:

 

C

csudhoff

New Member

Dec 23, 2006

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Dec 27, 2006

#6

• Dec 27, 2006

• #6

I have been feeling a bit under the weather the past few days, today I had a chance to pull off the IAC and give it a cleaning. It was very dirty and i reinstalled it. I am still having the same problem as described above.

I also checked the MAF as well and I unpluged it and repluged the connector. BTW the MAF was replaced about a year ago.

Any other ideas?

 

mrvax

Stay thirsty my friends

Founding Member

Nov 29, 1999

5,225

3

79

SN Moderator: Orlando, Fl.

Dec 27, 2006

#7

• Dec 27, 2006

• #7

I had the same symptoms when my IAC went bad. As the car was stalling, I could press on the gas, get the revs up and keep it running (until I took my foot off the gas.)

 

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csudhoff

New Member

Dec 23, 2006

4

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0

Dec 27, 2006

#8

• Dec 27, 2006

• #8

mrvax said:

I had the same symptoms when my IAC went bad. As the car was stalling, I could press on the gas, get the revs up and keep it running (until I took my foot off the gas.)

Click to expand...

Exact same problem, how much did you end up picking up an IAC for?