TRUCK WAS FINE ONE DAY THEN ALL OF A SUDDEN IT ...

1990 Ford F-250

Tiny

fredluongo

December, 30, 2012 AT 5:02 AM

Truck was fine one day then all of a sudden it would die down when you gave it gas. In neutral it revs up fine but not when in gear. I replaced the throttle pos, veh. Speed, and map sensors. Fuel pressure is good as are all vacuum lines. Tried disconnecting battery too. Had the diagnostic scan done and said system good.

FOUND 656 RELATED QUESTIONS

6 Answers

Tiny

ASEMaster6371

December, 30, 2012 AT 5:08 AM

What is the exact fuel pressure?

Check the back pressure on the cat converter?

Roy

Tiny

fredluongo

December, 30, 2012 AT 5:19 AM

Don't know exact fuel pressure but when I relieved the pressure on the fuel line manifold it squirted out hard. Was going to cut out the converter but could it go all of a sudden

Tiny

ASEMaster6371

December, 30, 2012 AT 5:21 AM

If the guts broke loose, it would go to the outlet and cause a huge restriction.

Get a fuel pressure gauge and verify the pressure on the fuel pump

roy

Tiny

fredluongo

December, 30, 2012 AT 6:01 AM

The trouble all began after I had gotten on it, maybe that blew it out. But I it ran fine a couple of times. That wouldn't happen if it was restricted. No other possibilities?

Tiny

ASEMaster6371

December, 30, 2012 AT 6:12 AM

Lets eliminate one by one

roy

Tiny

fredluongo

January, 2, 2013 AT 3:24 AM

It was a clogged converter. I gutted it. Runs better than ever, now. Thanx

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