won't start, need help
Thread Starter
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Senior User
Joined: Jan 2003
Posts: 156
Likes: 0
From: East Texas
won't start, need help
I have a 90 F150 4.9L. the engine turns over, but wont start. I have replaced the fuel pump relay, and the ignition control module, neither have helped. A friend said it might be the coil or coil pickup, and suggestions or tips?
Senior User
Joined: Sep 2003
Posts: 497
Likes: 0
From: Houston TX
If no spark, could be. I'd probably suspect the pickup before the coil. With a non running engine the first thing to check is spark, fuel, and compression. Find which is missing or wrong, and go from there. No spark, start with the plugs and start working back.
MK
MK
Freshman User
Joined: Apr 2003
Posts: 36
Likes: 0
If you have spark it might be fuel. Mine wouldn't start because of fuel. When you turn on you key do you hear the fuel pump start up for a few seconds. I had to change the fuel tank selector switch on the dash. I found this out only after I had checked everything else. If the switch is bad the fuel tank gauge registers fine but the fuel pumps don't work. I checked it by jumping across with a wire.
