1990 extreme cold start/restart problem
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1990 extreme cold start/restart problem
90 F250. has been as reliable as any toyota. Minnesota. -16 below zero. truck had not been started for about two weeks. fired right up with very little effort. ran for 20 minutes, never touched the peddle. shut down. came back 15 minutes later and she won't start. cranks fine, i can hear the fuel pump with ignition on. i smell no gas after depressing the pedal in frustration several times. i am not a fuel injection guy. can someone direct me to the best way to check spark and gas? i will pop the cap to and see if i have a broken rotor or something. will check spark while i am there. thanks-
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I forgot to mention- fuel injected 6 cylinder, five speed. Appears there is no spark when I tested with timing light. Seems odd that it started just fine then cooled for a few minutes and now nothing....any help appreciated...
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okay- looked at it again today- rotor turns fine and timing is correct. ran wire from batt to coil, which turned on the fuel pump, still no fire. checked both wires at coil with light and stays lighted solid on both leads until i turn on ignition and then neither lead lights up the tester. am i doing this incorrectly? i tried a jumper to the coil lead, and still no spark from the coil or at the plugs. continued help appreciated.
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You said the jumper wire turned on the fuel pump. Does that mean the ignition switch did not turn on the pump?
I had an intermitent no spark and Bill the resident electrical guru said I should pull the spout connector and try starting it then. Think that just takes the computer out of the picture.
Good luck Frank
I had an intermitent no spark and Bill the resident electrical guru said I should pull the spout connector and try starting it then. Think that just takes the computer out of the picture.
Good luck Frank
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yes, the fuel pump functions with the jumper and also with the ignition and no jumper in place. i assume the "spout" is the funky plug wrapped to the harness off the distributor. I'll pull it tomorrow and see what happens. If I do get spark after the coil with the spout pulled does this mean the icm is bad? I am assuming that pulling the plug takes the icm out of the picture? So...if thats correct, does the icm inhibit spark based on some other problem or might it just be it? thanks again!
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I'm not an expert. I THINK all it does is point to the ICM as bad.
If it still doesn't start, the TFI module is something I would look at. Not hard to remove, and most auto parts places can test it for you. Lots of folks have had them fail, but I think they usually fail due to heat causing internal deterioration. I had some trouble getting the two little bolts out of mine. Some real small metric socket finally worked, but at Advance Auto, I saw a tool made for removing the bolts. Kind of a stubby plastic thumb wheel. It worked fine for reinstalling it.
Perhaps tomorrow Subford (Bill) will be around to answer your questions.
Good luck Frank
If it still doesn't start, the TFI module is something I would look at. Not hard to remove, and most auto parts places can test it for you. Lots of folks have had them fail, but I think they usually fail due to heat causing internal deterioration. I had some trouble getting the two little bolts out of mine. Some real small metric socket finally worked, but at Advance Auto, I saw a tool made for removing the bolts. Kind of a stubby plastic thumb wheel. It worked fine for reinstalling it.
Perhaps tomorrow Subford (Bill) will be around to answer your questions.
Good luck Frank
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The TFI , thin film ignition, is the ignition module on the distributor in your 90. The computer has a number of different names, and controls the fuel injection, the tranny in some cases, idle speed, timing, etc.
Sorry if I confused you.
Frank
Sorry if I confused you.
Frank
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Got to thinking about your problem, and searched some old threads. You should try pulling the codes. Depending on what codes you get, then pull the spout connector and see if it starts. If it does start you either have a bad computer or one of the spout wires is grounded.
I think. LOL
Frank
I think. LOL
Frank
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Read this article about pulling codes. All you need is a paper clip or a short piece of wire., paper and pen. Real easy to do.
Good Luck Frank
http://fordfuelinjection.com/?p=13
Good Luck Frank
http://fordfuelinjection.com/?p=13
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Great info- found the following codes: 21,24,67 and then the last two at end was 33,33. Pulled the spout plug, still no start. Battery is strong considering the temps. Continued help appreciated- Joe (no- I was not pushing the clutch in)