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5.0L (1979-1995) Mustang Technical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.

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Old 06-03-2014, 02:55 PM   #11
88 orangepeel notch
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I'm assuming that the TFI tested good, then dig around on the forum for a step by step walk thru on a "no start". If I find it I'll post the link. It walks you thru on diagnosing your problem is. It helped me a couple times.
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306 with all bolt ons, letter cam, ported E7's, T5 swap, full exhaust, 3:55's, 2" drop, and the worst paint you'll ever see or feel.
Dyno'd 300/316, 2745lbs-track scale
Best ET………12.4@108, 1.66 60ft on 8" ET Drags.
24 mpg daily driver
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Old 06-03-2014, 02:59 PM   #12
88 orangepeel notch
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Found it

http://sbftech.com/index.php/topic,5...1.html#msg6501
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306 with all bolt ons, letter cam, ported E7's, T5 swap, full exhaust, 3:55's, 2" drop, and the worst paint you'll ever see or feel.
Dyno'd 300/316, 2745lbs-track scale
Best ET………12.4@108, 1.66 60ft on 8" ET Drags.
24 mpg daily driver
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Old 06-08-2014, 08:00 PM   #13
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Still no go will drive for about 20 30 min then it just kills over
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Old 06-09-2014, 09:47 AM   #14
mjr46
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by the time you take a tfi off, bring it to the parts store for testing, it'll cool down and of course test good.......other possible things = stator in the dizzy
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Old 06-09-2014, 09:55 AM   #15
88 orangepeel notch
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Quote:
Originally Posted by jcgarcia8318 View Post
Still no go will drive for about 20 30 min then it just kills over
Did you get the TFI tested ? Like mjr said a cold one may test good, Have them run the test 3 times, in a row. It'll be very hot by the end of the third test. That's where a bad one will fail.
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306 with all bolt ons, letter cam, ported E7's, T5 swap, full exhaust, 3:55's, 2" drop, and the worst paint you'll ever see or feel.
Dyno'd 300/316, 2745lbs-track scale
Best ET………12.4@108, 1.66 60ft on 8" ET Drags.
24 mpg daily driver
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Old 06-10-2014, 07:40 AM   #16
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I'll let you guys know the status of the tdi on Sunday. But if there's any more ideas I'll be glad to try them out.
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Old 06-10-2014, 08:14 AM   #17
88 orangepeel notch
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Just out of curiosity, when the car dies, feel your fuel pump relay. Let me know if its hot. It might not be nothing but my car happened to just die on the road at speed this week, only for a second or two, then start back up by itself and motor on like nothing happened. When I got home, I pulled my ECM and harness out of the kick panel while the car was running and it hiccuped again. So I thought lose wire but I couldn't get it to do it again no matter how hard I pulled on the wires, lol. But I did notice my fuel pump relay was very warm to the touch. I also was almost on empty so I filled the tank and the relay stayed much cooler. Maybe my fuel pump got hot, I don't know as I'm still tinkering, but just an idea.
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306 with all bolt ons, letter cam, ported E7's, T5 swap, full exhaust, 3:55's, 2" drop, and the worst paint you'll ever see or feel.
Dyno'd 300/316, 2745lbs-track scale
Best ET………12.4@108, 1.66 60ft on 8" ET Drags.
24 mpg daily driver
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Old 06-11-2014, 12:41 AM   #18
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You stated that you pulled the coil wire and got the spark going again? 1st check the engine ground. Don't just look at it , clean it. 2nd I had an engine that would run with a spark tester in line with the coil but not direct. The coil wire was bad. as had a poor ground also. Just a thought
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1995 Saphire Blue GT, 5.0 stroker, Trick flow Heads, Intake, Cam,BBK 75mm TB, BBK EX
tr3550, Spec STG2, Eibach, Cobra brakes.
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Old 06-11-2014, 05:45 PM   #19
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Msd boxes and coils do this occasionally, seemingly more often than stock. I'd throw the stock ignition components back on and see what happens.
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Old 06-12-2014, 07:14 AM   #20
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Talking Aftermarket

OEM if ya can, I was wondering who makes FRPP ignition box and coil.
I have an MSD on the 5.0 , That's the way it came TBH, I don't trust em.
Open it up and look at the components, JMHO.
Trying to find out if the FRPP unit is any better.
Im sure the Race teams get stuff ya cant buy.
Random Thoughts.
I have had a lot of issues over the years with aftermarket, Wires, HEI Modules
Crappy points and condensors. Ya Im that Old!
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2005 Roush Sport,SOLD
1969 Rust Back, Frame up Resto in progress. 351W, Worked C4, 9" BBK so far
1995 Saphire Blue GT, 5.0 stroker, Trick flow Heads, Intake, Cam,BBK 75mm TB, BBK EX
tr3550, Spec STG2, Eibach, Cobra brakes.
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Old 06-12-2014, 07:14 AM
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