Question about 2001 Dodge Caravan
I have a misfire in cylinder 4. I replaced the following: plugs, wires, coil pack, injectors, ran fuel line cleaner. Still have a misfire in cylinder 4, all I can think that it might be the Fuel Rail Wiring harness (electric wires that plug into the injectors). It looks lightly burnt from heat in sections. I purchased a code reader and it says Pending code cylinder 4. When I replaced the injectors which was the last thing I replaced the van had no codes and then 2 days later I had the check engine light again. Im think maybe I shorted the old wire out when I installed the NEW injectors (the witre is almost 10 years old). It almost feels as if the wire has a short (if the wire is even the problem) because it feels like I have fuel power at one minute and loss of power the next. Sometimes the check engine light comes on solid and sometimes it blinks and goes away. Does anyone agree or have any other suggestions? I order a new wire harness just waiting to receive it. Im strapped for cash and this was my fathers vehicle (he passed away in june) so Im trying to do the repairs myself to cut cost but to also keep the van up and running as long as possible. Thanks in advance to everyone.
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Posted on Jan 02, 2017
I agree with phillyboy. Don't buy a compression gauge though. Pay a garage to check your compression. $40 or so.There are three rings on a piston, a compression ring, an oil ring and another compression ring. If your rings have failed on cylinder 4, that would explain the oil on the spark plug. The oil that is building up on the spark plug is probably causing the misfire and subsequent code.
Posted on Nov 30, 2009
My guess on this is gonna be a cracked ignition coil. Have it tested by someone. It is very common for these coils to crack and cause a misfire.
Posted on Feb 26, 2010
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