1989 Ford fullsize van
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Joined: May 2003
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1989 Ford fullsize van
I have a 1989 Ford van 4.9L straight six. It stopped ruinning today. It will turn over but not fire.I checked the fuel filter but it was clean and was new about a month ago.I also pulled a pl;ug and grounded it to the block and got no spark. I then pulled the coil wire to the distributor and grounded it and got no spark. SDhould I go to the TFI on the distributor (and how can I check it) or should I got to the Coil (and how can I check it) or should I just replace them both.Some one said in another message that autozone will check the ignition module if you take it to them.(and I do have the little wrench for that somewhere). Can someone hrelp Pleease.Thank you.
Laughing Gas
Joined: Mar 2003
Posts: 877
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From: Colorado, U.S.A!
1989 Ford fullsize van
Sounds like the module failures I've had. I'd get it checked, but there are other things that can cause no spark besides that. I've never had a coil go bad, but it's not all that uncommon, I guess.
Might want to check wires to the coil, cap/rotor, stuff like that.
The coil can be checked with an ohmmeter. A Haynes manual would give you the correct values, plus a lot of other helpful info.
Might want to check wires to the coil, cap/rotor, stuff like that.
The coil can be checked with an ohmmeter. A Haynes manual would give you the correct values, plus a lot of other helpful info.
Post Fiend
Joined: Nov 2002
Posts: 9,987
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From: Memphis, TN
1989 Ford fullsize van
It'll never spark if the plug or coil wires are grounded - there has to be a gap. The Haynes manual has an excellent procedure for diagnosing the ignition system. You might also pull the codes.
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1989 Ford fullsize van
Thanks guys. Between what I read of similar problems and what you told me I had problem fixed by Sunday. I used a multi meter Saturday after I removed the coil and ignition modul.Iread short on the modual and good on the coil. But I took the to Autoizone anyway. They checked them and said the same thing. So I bought a new modul and installed it by Sunday noon.So alls right with the world again!All I can say Now is:THANKS GUYS.
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