Question about 1991 Ford F150

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91 4.9 won't run with spout in, runs with spout out.

Truck would not run. Installed new dist. and control module. Pulled spout, set timming to 10 degrees. Engine ran smooth. Plugged in spout and it was like turning off the key. No fire to coil with spout in.

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Spout is computer controlled timing check the spout circuit for short to ground corroded insulation on harness where it runs along the intake also look for swollen or oil soaked sections of the harness

Posted on Dec 07, 2012


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Posted on Jan 02, 2017

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SOURCE: I have an '88 ford f-150 302. I changed spark

I have seen this before working for really came down to removing the exhaust pipe infront of the clogged catalytic convertor and road testing it to confirm that the convertor was clogged.. So if you can loosen the pipe in fron of the convertor so that the exhaust can escape with out going through a possibly clogged or melted convertor and if it runs with power thats great other wise diagnostics for the engine will be needed to be done.

Posted on Apr 02, 2009

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SOURCE: 1989 ford aerostar will not start when engine is warm.

AM temp 55 car started but stalled out after starting. Attempted to restart and did not hear fuel pump. Tried again and then fuel pump kicked in. Checking fuel pump inertial switch and fuel pump electrical supply.

Posted on Apr 19, 2009

  • 318 Answers

SOURCE: Ford EEC-IV Ignition Problem

if you have a set of noid lights check for injector pulse if you do not have pulse and no spark you have a bad pick up (hall effect sensor) inside the distributor this also would account for your prior problem with your timing because this pick- up (hall effect sensor) if it starts to short internally can effect ignition timing and missfires and also for the voltage changes

Posted on May 31, 2009

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SOURCE: Burning out the pickup coil in 1986 F-150 w/302

Hello genobeano: My name is Roger and I will give some information that should help. When you replace the pick up coil also replace the ignition module. The ignition module will short out the pick up coil. If the module is attached to the side of the distributor be sure to use die electric grease when installing the module on the distributor. Should you not use the grease you will burn up the ignition system. By the same token should the pick up coil short out the module will burn out. The fact it runs for a short time says that you have a heat problem. Normally is in the ignition system. There was a tech bulletin to replace the pick up and module as a unit to correct the problem.
Please rate the answer as this lets us know you received correct information. Should you need further help please just ask. Thank You for using Fix Ya. Roger

Posted on Jun 17, 2009

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SOURCE: 1995 ford probe new engine no spark

did you install the crank sensor?

Posted on Mar 23, 2010

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