1991 F150,5 liter,E4OD.When passing or going up hills the engine skips or misses,also when stopping after highway driving the engine quits.Have to give it lots of throttle to keep it going. The tach jumps all the time also.Changed plugs,wires,distributor cap and tps.Checked fuel pressure koeo 35 psi,30 when running at idle.HELP!!

 

[updated:LAST EDITED ON 28-May-02 AT 10:16 PM (EST)]Sounds familiar,I have a recent post with my problems and some good advice, that I received 93 302 F150 gas mileage check it out.

Phil

 

Thanks for the info.I'll tell you how I made out later RJ.

 

If your tach is erratic, then there is an ignition problem BEFORE the coil. Either in the ignition module, or the sending unit (pickup)in the distributor, or wiring between them.

Winford

 

I tried a new tfi module but it did not fix the problem.I'll try your suggestion-sending unit next. Thanks RJ>