Got a 93 5.0 that will not turn up!

Have you looked at the balancer? or tried retarding or advancing the timing?

cullman,

tryin to figger this one out........ now understand im not flaming here.......

not possible for the eec to remove timing with no spout, it is an open circut, and thats that. if the timing is retarding, well then it has to be mechanical....which makes little sense. have you ever swapped a distributor in? there is a pickup in there that does go bad, and is hella hard to diagnose..... it reared its ugly head on me once, broke 3 bassani cats, they warranted two, and said i was on my own.......... went thru 3 tfi modules, and a coil etc..... pissed me off! found it, problem solved. try that one.......

please splain "it went back to zero" to me....... im not sure how you know this.

backfiring thu the exhuast, either hella retarded timing, or a rocker adjusted too tight holding an ex valve open...... of course, having the fuel injector harness on wrong will cause the injectors to fire at the wrong time, and can cause an ex backfire...


are you 100% CERTAIN it is NOT mechanical in nature????? I am not trying to doubt your expertise here, but if you can rule that out, you can be certain of the electrical aspect........


more thoughts,
does this problem happen in nuetral, just revving, and at 2800 it turns to ****, or is it only under load?
have you ever swapped the eec?
if you have a car with a known good eec to swap just for a test, it may save you alot of time.....

yet another thought...... the "salt and papper shakers" have those been disconnected, and cleaned, regreased, and put back together? ford actually had a campaign on these bad boys....and MANY intermittant problems are solved by cleaning these........

Have you checked for blockage in exhaust? Cats? I have seen that happen more than once. Since you didn't say whether the exhaust was changed with each motor, I am assuming it's the same.

I HAD THE SAME PROBLEM AND FIXED IT!

If you are talking about the same problem like no matter how warm the car was, if you started it up, sometimes a long cranking time, it would run and then you nailed it and it would just rev slow and go nowehre, then start back firing into the intake and crap. It was horrible, changed all the usual stuff.

Changed the fuel pump, and no more problems, runs awesome now.

Lol btw wtf are the "salt and pepper shakers"? the 2 big ass plugs on the back of the intake manifold?

I had this same problem after i installed my supercharger,got every thing back together set the timing jumped in the car to try it out and it would only reach 3000rpms and cut out i was so aggrevated it was about 2.00am so i called it a night emptied my pockets to go to bed and found the spout connector in my pocket i had forgotten to put it back in,went back out and put it back in and it fixed it.

This may be a far stretch but have you considerd something in the fuel tank. The car will idle and even allow rpm increase until there is a high enough demand for fuel and then it's over the gremlin appears.

SOrry if you already went over this, I skipped to the last page without re reading all the old posts... but have you tried swapping in a known good PCM?