Good news more problems!!
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New User
Joined: May 2006
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Good news more problems!!
Ok guys this one a little more tricky. Ive posted before about my 1992f150 5.0 having a terrible idle a running like crap, well havent fixed that yet. Tried cleaning the egr valve, pcv valve, shot tb with a can cleaner, replaced cap , rotor plugs and wires!!! Still no change!! So I tried something new. I hooked the timing light to each plug wire to check for current. 1, 2, 3, shows an intermittent flashing not a steady flash like cyclinders 4-8???? Then I tried it on the coil wire and it had slight breaks in the beam also. Shouldnt the coil wire be a solid light as current is always passing. She ran great for years with almost no problems so I cant rid of her. Any advice I can get is very appreciated. Tony
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Joined: Oct 2003
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From: New Jersey
92 has an EEC, and you should pull codes out of the computer in case the computer is kind enough to give you some information.
Here is how to do it: http://frederic.midimonkey.com/f350-eec.html
If it idles poorly, but drives "just fine", it's probably not the cap and rotor, but probably the IAC is shot, stuck, or gummed up.
But I would check codes, because the 92 will record ignition and IAC problems. Could even be a vaccum leak.
Here is how to do it: http://frederic.midimonkey.com/f350-eec.html
If it idles poorly, but drives "just fine", it's probably not the cap and rotor, but probably the IAC is shot, stuck, or gummed up.
But I would check codes, because the 92 will record ignition and IAC problems. Could even be a vaccum leak.
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Thanks for the info, I think I stumbled over the problem, I did a feul pressure check and got 32psi key on, 20psi idle and 0 to 15 when I try to rev it. Regulator and filter change today!!! Thanks again for you help, hope this works. Tony
