Truck shuts off when driving and at idol. Acts like it's running outta fuel. Starts right back up hold fuel pressure 38-42lbs even when acting up. All new electronics plugs wires computer distributor

Asked by Apr 28, 2015 at 05:53 PM about the 1991 Ford F-150 XLT Lariat SB

Question type: Maintenance & Repair

Even fuel pump and filter. Hasn't thrown
any codes. Any suggestions ready to put a
match to it. Email deanteuton@gmail.com

2 Answers

68,935

Teuton62,sound,s like you have a vacume leak,check all vacume line,s and your in take gasket,may have a air leak.A vacume leak would fool the ECM and flood the truck out.

Ok thank you I'll check that out. With the pressure Guage attached turn on key Guage goes to 40 lbs but drops to 18lbs. Once key is turned of pressure drops instantly. I had changed fuel pump 1 1/2 years ago I mistakenly put an Airtec pump in. Finding out that they aren't worth the effort of installing them.

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