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Mustang 5.0 will run until I give it gas then dies

Tiny
STORMJONES
  • MEMBER
  • 1991 FORD MUSTANG
  • 185,000 MILES
I have a 1991 mustang 5.0 t5 manual swap been running good just put new bbk headers on them and put dumped exhaust right before rear axle and a cold air intake. My question is I am running really rich I can smell it and it will idle fine it's when I press the clutch in and give it gas it dies but will start right back up. I have the original 19lb injectors In it and it was running great and now all of a sudden it's doing this to me.
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Sunday, September 9th, 2012 AT 6:42 AM

7 Replies

Tiny
KHLOW2008
  • MECHANIC
  • 41,815 POSTS
Did you check for trouble codes?
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Sunday, September 9th, 2012 AT 9:50 AM
Tiny
STORMJONES
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  • 43 POSTS
Hasn't thrown any
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Sunday, September 9th, 2012 AT 10:26 AM
Tiny
KHLOW2008
  • MECHANIC
  • 41,815 POSTS
Without any codes, it is going to be rather a long shot. Chart shows possible causes and which system to check.

Try cleaning the MAF to see if it makes any difference.
Ensure there are no vacuum leaks between the MAF and throttle.
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Sunday, September 9th, 2012 AT 10:50 AM
Tiny
STORMJONES
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  • 43 POSTS
Okay so I checked it out this morning and of I barely touch the lock cylinder the car will shut off so my question now would be what wires should I look at?
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+1
Sunday, September 9th, 2012 AT 2:40 PM
Tiny
KHLOW2008
  • MECHANIC
  • 41,815 POSTS
Under such circumstance, you should be looking at the ignition switch. Try wiggling the wire behind the ignition key to see if it makes a difference.
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Sunday, September 9th, 2012 AT 2:45 PM
Tiny
STORMJONES
  • MEMBER
  • 43 POSTS
Okay after investigation of the problem I took my under dash apart and found out that the ignition module was unconnected and was shorting so I got it fixed thanks for all the replys.
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Sunday, September 9th, 2012 AT 3:57 PM
Tiny
KHLOW2008
  • MECHANIC
  • 41,815 POSTS
You're welcome.
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Sunday, September 9th, 2012 AT 4:07 PM

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