This is topic MY MUSTANG DAYS ARE OVER? in forum Tech Talk at Northern California Ford Owners  .


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Posted by Yung Than (Member # 728) on :
 
My 94 GT has been cutting off while driving on the street. It first happened 4 months ago when I drove over some railroad tracks, engine died but radio kept playing so I new the battery was okay. I changed the ignition module, bought an MSD coil, MSD wires, new IAC sensor, and changed the fuel filter.....

Up until 3 days ago it drove fine then I drove through a bumpy intersection and the engine cut off, I steered it to the roadside and I started it up again. It happened twice more that day, once while driving and once while stopped at a light. Yesterday it happened twice and I got fed up. I talked to a friend that knew somebody with a similar problem and he said it was the distributor's stator/hall effect sensor. I went today and got one installed and still the same problem? Anyone have suggestions?

[ November 01, 2003, 08:28 PM: Message edited by: Yung Than ]
 

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Posted by 88gt (Member # 579) on :
 
Did you check the the TFI module again to make sure it was installed perfectly? They can be tempermental if the film gets messed up.

How full is the gas tank?
 

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Posted by Yung Than (Member # 728) on :
 
I think the TFI film problem occured more on 87-93's because it was mounted on the distributor close to the engine. My stock module is located away from the engine under the air box and I replaced it with the Dynamod from Performance Distributors. I think I'm going to have the mechanic scan codes tomorrow to be sure what the deal is.

Gas tank is at half. I'm sure that if gas was the problem I wouldn't had been able to start her up these past 2 days and drive 30 miles, but thanks for asking.

[ October 30, 2003, 08:19 PM: Message edited by: Yung Than ]
 

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Posted by 87 Saleen (Member # 1549) on :
 
how's ur fuel pump doing?
 

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Posted by Yung Than (Member # 728) on :
 
The mechanic got running rich codes 173 and 137. I bought new oxygen sensors thinking it was giving a false reading but you can smell the strong gas out the exhaust.

[ November 01, 2003, 04:39 PM: Message edited by: Yung Than ]
 

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Posted by Yung Than (Member # 728) on :
 
After 3 days of diagnostic testimg by the mechanic, my 94 GT can not be repaired. I don't understand what the problem could be. It started up, idled and drove fine to the mechanic across town the day I went to get the distributor checked out. They changed out the stator/hall effect sensor and then they started to have a problem with the car turning off after a few seconds after start up. The timing was set to 10*. The car runs really rich and dies after 3 seconds, the engine shakes sometimes before dying. All ignition parts(TFI module, wires, coil, stock ignition box, spark plugs), mass air equiptment, fuel pump and regulator were checked and fuel pressure was checked and the O2 sensors are new. He did point out that the spark at the coil was bluish -yellowish, and said it was suppose to be a blue spark only, not sure what that meant. They are towing my car back home on monday. Some repair, huh.
 

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Posted by Blue Oval (Member # 2548) on :
 
hey sine u cant find the problem i would talk to jmcelsk is his name on here i think or its simmilar.but he does side jobs and he can fix anything.he used to work for ford as a master tech. im sure he can fix it all try and find his number.his names Jon by the way.
 

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Posted by Yung Than (Member # 728) on :
 
Thanks I will look him up.
 

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Posted by 87 Saleen (Member # 1549) on :
 
sounds like a fuel problem, or lack of.
 

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Posted by 94gt (Member # 3060) on :
 
fuel problem? they told him that it was running really rich, right?
 

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Posted by xchpstang (Member # 1206) on :
 
Is the car modified? If so, what modifications?
 

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Posted by Blue Oval (Member # 2548) on :
 
sorry the name is jmcclesk.
 

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Posted by Yung Than (Member # 728) on :
 

quote:

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Originally posted by xchpstang:
Is the car modified? If so, what modifications?

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It's a 94 GT with 150,000 on the clock

It came with:
-stock mass air set up, clean MAF sensor
-cobra intake w/65mm TB
-2.5" catback, H-pipe w/cats, 1-5/8" headers

When the car first cut out 4months ago, I upgraded to an MSD coil, MSD wires, ign module from Performance Distributors, new cap/rotor, new plugs, and an adjustable fuel regulator w/gauge.

It drove fine until 5 days ago and I thought it was the stator/hall effect sensor in the distributor. They also installed new o2 sensors. Does anyone know what the correlation with the yellowish/bluish spark at the coil is, as oppose to a pure blue spark?

[ November 01, 2003, 07:36 PM: Message edited by: Yung Than ]
 

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Posted by Cobra5.0Jeep (Member # 1482) on :
 
maybe fouling injectors?
 

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Posted by jmcclesk (Member # 1355) on :
 
The color spark you have, means the spark is weak. check your grounds.
 

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Posted by Yung Than (Member # 728) on :
 
Would a weak spark cause the rich condition?
 

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Posted by jmcclesk (Member # 1355) on :
 
Yes, that is possable
 

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Posted by shade- (Member # 298) on :
 
if jmmclesk can't fix it I'll help you push it off a cliff
 

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Posted by Yung Than (Member # 728) on :
 
I will check the grounds when I get the car towed from the shop on monday. I will post with the outcome. Thanks for the help.
 

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Posted by kwikrob (Member # 835) on :
 
A weak spark means that you're not completely burning your fuel, hence, the rich smell of gas. Jim is right, check your grounds.
 

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Posted by cobraman_1994 (Member # 467) on :
 
they probably got messed up going over a bump too fast or at the wrong angle. like train tracks
 

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Posted by jmcclesk (Member # 1355) on :
 
I recived you email, call me this week 916-395-6747. maybe i can point you in the right area.
 

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Posted by KCmustangboy (Member # 1927) on :
 

quote:

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Originally posted by shade-:
if jmmclesk can't fix it I'll help you push it off a cliff

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LOL ya thats would I would do if he couldn't fix it lol
 

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Posted by Blue Oval (Member # 2548) on :
 

 

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Posted by Eddie510 (Member # 2354) on :
 
so, what happened?its good now?
 

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Posted by Yung Than (Member # 728) on :
 

quote:

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Originally posted by Eddie510:
so, what happened?its good now?

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