QuestionQUESTION: This car blows ignition fuses repeatly. Replaced starter. Now what? Thx Ed
ANSWER: Hi Ed,
Can you tell me which fuse # and whether it is in the engine compartment or under the dash? The manual doesn't name the fuses, such as 'ignition', but I do have the wiring diagrams...but I would rather not guess as to which fuse you are speaking of.
Roland
---------- FOLLOW-UP ----------
QUESTION: Car is in shop so I can't get #. It is a 20 amp fuse, under hood, and runs ignition and fuel pump I think maybe also a/c. Fuse in center of box and closest to windshield for lack of better description from mechanical nerd. ED
AnswerHappy New Year, Ed!
May I ask for your help?
I need your vote of confidence.
I'm in a close race to be recognized as 'Volunteer of the Month' at Allexperts
Purely symbolic, but it means alot to me.
Please click on "Thank/rate the expert" button below/left
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Click on the "YES"
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Thanks for taking a moment to help a fellow Chrysler-owner.
Roland
PS:Do it now, the contest closes at 6pm central time.
Hi Ed,
I think you are describing fuse #5 in the power distribution box, but let me know if that is not the case. It's current powers part of the pcm, the autoshutdown relay and, in turn, the spark coil pack or distributor (depending upon which engine), the generator field coil, and the oxygen sensor. Any item among all of those could be at fault, but my suspicion is that one of the wires for the oxygen sensor heater is shorted to ground as they are very fragile. So look at that sensor on the exhaust manifold and its wires. If that is not the reason, then you could disconnect the plug for the pcm, and for the coil pack/distributor, the dark green/orange wire at the generator, the oxygen sensor, and finally the pcm (one at a time) and either test with a new fuse, or alternatively measure the resistance to ground from the left side pin of the fuse socket (the passenger side) using an ohmmeter and with the fuse removed. What ever device when unplugged causes the resistance to rise from near 0 ohms to several ohms is the culprit.
Roland
Revision: On second thought you may be describing fuse #8 which is the fuel pump/starter/ and three sections of the ignition switch. You could remove the engine starter relay and then try the fuel pump relay to see if either of those prevents the fuse from blowing, and if not then try unplugging the transmission control module, the body control module, fuses 14,16 and 17 in the fuse box behind the dash (all one at a time) while looking at the resistance to ground from the fuse pin on the left of the socket. Of course the ignition switch should be 'on' when you are testing the effect of removing the fuses as they are otherwise not 'drawing' on fuse 8.
Please let me know what you learn.
