stopover
Active Member
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It all started toward the end of a long continental trip. As I got on the last leg home she started with a rough idle but was ok driving. A week later and the rough idle had developed into a bad missfire. The car is a 2000 4.6 Thor. Prior to the trip I had replaced the head gaskets and fitted reworked heads with new valves etc. So first thing was onto T4 diagnostics which indicated lean fueling on both banks, lambdas only just working so I decided that I would replace those and do a de-cat at the same time. I changed the MAF and spark plugs too. More power yes but still the missfire!! and it was getting worse so did a compression check - 160plus on all so not that. The next thing the diagnostic indicated was (maybee) low fuel pressure but a pressure check ruled that out. Next injectors so off came the plenum and out with those, all very good!!!!!!! Noticed a thread on this forum where someone found water in the ECM engine control module, pulled it out and hey presto lots of water all over the leads, took all the tape of the lead packs and dried everything out with WD40, compressed air and switch cleaner. Started he up and sweet as silk, well not quite as she has done 180,000 miles but pulling well and the de-cats have given much more urge! Off to Scotland next week, should be good, just need to do the brakes and put another couple of air bags on the back but I am feeling good now engine sorted.
I do diagnostics but got caught out on my own car!! another lesson learnt.
I do diagnostics but got caught out on my own car!! another lesson learnt.
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