Car randomly dies while its running perfectly.

[94RedGt]

Yet another problem with my 5.0, when will it ever end. Its the third time now that the car has left me on the side of the road with the same symptoms. Its running perfect and all of the sudden it will start to misfire alot and sputter and if i try giving it gas it just backfires alot and the rpm start decreasing until it finally dies. I have already replaced the pip sensor and replaced the injector wire harness because mine was all cracked up and had broken wires all over so i installed a new one wich for the moment had me thinking that i had solved the problem. Now this problem pisses me off cuz its not something that i expect, the car can be running fine for weeks or a month then it takes a crap again , now after finally calling my buddies and doing a little research i think that my problem is either with the CCRM or the TFI module, a friend told me that the CCRM is fine cuz my pump primes and everything when ever the car dies, and the fuel pump runs fine and i got good fuel pressure , but while im cranking the engine i get nothing even when i was spraying starting fluid into the engine wich means that there is no spark, at the same time i checked for fuel in the rail and it had fuel preassure cuz fuel came out of the valve .

Could it be the TFI module ?

 

[TheNatster513]

Try plugs and wires. Do you have headers on the car? A tune? What do you have performance wise? Sounds kinda like its over heating and the comp is shutting the car down to prevent damage. How's the temp?

 

[akaslick15]

check if your maf is plugged in ..it happened to me last time when i cleaned mine then found that it was unplugged for 2 days lmaoo i thought i was losing my mind hope that works

 

[94RedGt]

Maf is plugged, plugs and wires are new, everything is working fine and the car does not overheat, the pip sensor inside the distributor is also new, the car dies randomly gives me the problems mentioned above then the next day it will work fine and keep on working for weeks or a month then it takes a shit again. Im going to replace the TFI module anyways since it should have been replaced along with the Pip sensor. Pretty sure is the TFI module taking a dump.

 

[CC'S95GT]

Sounds like another pip sensor to me.Have you pulled codes? You don't need a CEL to have a code set.

 

[miss2slocoupe]

the 5.0 cars do not shut off if they get hot (trust me i know LOL)

 

[mikey94gt]

Just got thru diag with my car on this... make sure your computer has a good ground to the chassis, and its case isnt touching the car's chassis anywhere. also make sure the grounds on the engine to the chassis are good.... then go look at your dizzy. it could be the coil wires, the coil or the cap/rotor, but I doubt those.
The TFI module could be the culprit, a FOX style one will work (they are the same electronics, just one has the heat sink)

 

[CC'S95GT]

But the fox TFI is attached to the dizzy. to do this you'll need to reroute some wiring.

 

[mikey94gt]

Nah... you dont insall the dizzy... just the TFI. in both cases, they just bolt on, just one to the Dizzy like you said, and one to the fender, like the 94-5 cars, which can be hard to find, so I usually buy the Fox one instead, they are easier to find... just dont install a 4cyl one... lol.

 

[modo]

the symptoms you are describing usually are from a faulty tfi module. you can take the one on the car to auto zone to have it tested before you buy a new one.

 

[TheNatster513]

the 5.0 cars do not shut off if they get hot (trust me i know LOL)

lol mine did...

 

[miss2slocoupe]

lol mine did...

oh i stand corrected then! LOL mine never did and i had a horrible problem with it overheating for awhile there.. i would run way too hot :-/

 

[mikey94gt]

i overheated one so bad it siezed 3 different times.... still fired up and ran. tough motors.

 

[94RedGt]

Ok guys, i took my TFI to autozone and hat it checked and the test said the module was working good, ill buy a new one anyways to make sure, he ran the test only 3 times but it got hot also so it did not fail, are our TFI modules suppost to be silver on the outside ? I think sn95 came with a black one that said Motorcraft on it, mine is silver and has no markings so it looks like a replacement , but fox tfis were the ones that were silver. Also im taking my CCRM appart to see if any of the relays have bad solders.

 

[94RedGt]

New TFI and again it left me on the side of the road again, during a club cruise event, so now i dont even know were to start again, so far the PIP is new, the TFI is new, new sparkplugs, new spark cables , new diss rotor and cap. Only thing not new is the coil wich is an aftermarket MSD unit wich has been in the car since i got it, im going to buy a new one anyways cuz u never know and since i have replaced nearly everything that has to do with ignition i might aswell replace the coil since its one of the main parts. Im going to run the computer for codes and see if something is stored and also going to open it up and check for damaged components, my last car wich was a mazda miata had idle problems with the AC and after several parts changed it turned out to be a burned resistor inside the ECM so im deff going to check mine just in case.

 

[Billy50H]

This is what my car always did. Replacing the tfi module, coil, and other ignition parts helps it but once I replaced the entire distributor my car ran fine for a while then it started sputtering, misfiring at full throttle, and the rpms would surge. After almost a year of ongoing problems I took it to a mechanic. They took off the msd coil and it got better. Next they took out my chip and my car ran perfectly still to this day. Best bet is something in your distributor is faulty. Goodluck.

 

[94RedGt]

But if i replaced the sensor inside the distributor what else is there to change ? I only know of that one electronic part inside the distributor.

 

[CC'S95GT]

What was your actual fuel pressure?I have gotten bad remanned dizzys before. I don't know if the sensor was not replaced or if it was just a bad sensor.Did you notice any play in the dizzy shaft? It is possible for the bushing to get so worn that the reluctor wheel actually makes contact with the PIP. The TFI doesn't go out on the sn's very often at all. But the dizzy does. I replaced my original coil last year because it was breaking up in the higher rpm's There are 4 relays in the ccrm. fuel pump, a/c, fan high, fan low. After the initial time out of the fuel pump, the rotation of the dizzy is what keeps the f/p running.

 

[94RedGt]

I replaced the Pip myself and reused the old distributor, it had no play and the reluctor wheel never came in contact with the sensor, i cracked open my ecm today to check for burned out components but thank god everything was ok, im going to change out the coil anyways just to make sure since i have already replaced pretty much every ignition part. So should i spend the money and get a brand new distributor ?

 

[miss2slocoupe]

hmmm i dont know on that one... maybe a new button? but ill leave that to the people who know more about that..