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Old 05-31-2005, 07:15 PM   #11
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Re: yeah... its back...

Quote:
Originally Posted by 93Cobra#2771
Edit - just saw that you replaced TFI and that didn't do it.

As a refresher, can you give us a rehash of the problem, when it occurs, and what you have done so far to fix the problem?

I don't think he's found one(TFI Module) yet.

You should be able to get one at any auto parts store. May have to order it through them.
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Old 05-31-2005, 09:12 PM   #12
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Re: yeah... its back...

Quote:
Originally Posted by Wicked
I don't think he's found one(TFI Module) yet.

You should be able to get one at any auto parts store. May have to order it through them.

in the other thread where he pointed that we were all wrong, he said that he replaced it
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Old 05-31-2005, 09:47 PM   #13
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Re: yeah... its back...

yeah sorry for the 2 threads... i didnt mean that you were all wrong in a bad way... i just still need help... okay here is the deal.. the engine... when cold runs fine... as soon as it gets warm... it begins to cut out in all ranges... the tach abrubtly falls around 500 rpm and jumps back to the original RPM in a matter of less than a second... it will straighten up... and do it again... it is running very rich... so i dont think it is the fuel system... but i am still going th check the pressure... just gotta get a guage... i have replaced the TFI ignit control module... the plugs and wires... 2x the distributor cap and rotor... stator and hall effect sensor... checked the O2 sensors... found out that the EEC 4 was obd 1... ran those tests... which came up clean... dissasembled and cleaned the distributor several times... and replaced the fuel filter... each time i do something it will straighten up for a while... like 15 mins of driving... then start agian... regardless of hot or cold condition... then from then on... when it is hot... i am about to test the coil tommorrow... and that is it for now... it is a 1995 mustang gt (5.0) with a 5 speed... 3.73 gears... fipk... off road h pipe... borla catback to side exit... because it is an SVO edition car... and suspension that i dont think matters....
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Old 06-01-2005, 06:33 AM   #14
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Re: yeah... its back...

So you pulled the codes and didn't get any?

OK, how about a cheap/easy test. Pull the MAF, get some CRC electrical contact meter. Pull electronics out, and spray them down good. The sensing wires should be a SHINY silver, not a dull silver.

Do you run a K&N? Recently reoiled?

Quote:
it begins to cut out in all ranges... the tach abrubtly falls around 500 rpm and jumps back to the original RPM in a matter of less than a second
Can you give an example of the actual rpm this happens, and the amount of throttle you are giving it at the time?

How about the TPS, have you checked it for "flat" spots?
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Old 06-01-2005, 07:48 PM   #15
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Re: yeah... its back...

okay... i dont understand do you mean just on the MAF? and yeah i have a K&N and it is brand new... first thing i did... it is at all RPM ranges... and no matter what amount of throttle... but when i apply HARD throttle it seems to have full power... like launch power... like the power its supposed to have... but at or at 2000 to 3000 i would say it is the worst... it seems like the car shuts off and push starts itself in the matter of 1000ths of a second... because it does it at idle too... but of course... it just shuts down... or idles so low the TPS/ IAC catches it and pushes it back to 1000 and it falls again...
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Old 06-02-2005, 06:30 AM   #16
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Re: yeah... its back...

DEFINITELY clean the sensing wires on your MAF. Those are classic symptoms of a misreading MAF.

Either that, or a MASSIVE vacuum leak is the other possibility. Have you checked for vacuum leaks?
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Old 06-02-2005, 05:24 PM   #17
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Unhappy Re: yeah... its back...

i have this sensor testor that i used on the maf today... and it is fine it takes awhile... and i am working on the other sensors... there arent very many vacuum lines on the damn thing are there? its a 95... 5.0 so i think the only vacuums are behind the intake... and i checked those... i have checked alot of the big problems... dont stop listing the ideas though please... i am working the coil issue right now... because as far as trouble shooting goes... the coil is in the paperwork... i just havent touched it until now because my buddy says there is NO WAY... but i am runnig out of options
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Old 06-02-2005, 06:30 PM   #18
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Re: yeah... its back...

I agree with Richard, if the K&N is new maybe it coated your MAF with oil. I would also recommend cleaning it.
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Old 06-03-2005, 06:34 AM   #19
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Re: yeah... its back...

Plenty of places for a vacuum leak - intake ducting after the MAF, upper/lower intakes, PCV system, etc.

Clean the MAF - cheap and easy to do.
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Old 06-03-2005, 04:13 PM   #20
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Re: yeah... its back...

[QUOTE=93Cobra#2771]Plenty of places for a vacuum leak - intake ducting after the MAF, upper/lower intakes, PCV system, etc.
QUOTE]

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