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Forum: 4.0 SOHC / 4.0 OHV Tech 09-12-2012, 06:47 PM
Replies: 13
Views: 1,506
Posted By JDO808
Re: pros please help urgent engine issue

Do you have any resistance when you turn the crankshaft manually? BTW, do not turn the crankshaft counter clockwise as this will affect the rear chain tensioner. When you pulled your plugs, what did...
Forum: 4.0 SOHC / 4.0 OHV Tech 09-09-2012, 10:28 PM
Replies: 13
Views: 1,506
Posted By JDO808
Re: pros please help urgent engine issue

Our engines (SOHC 4.0 and OHV 4.0) aren't belt timed. They're pretty darn complex as a matter of fact. They use guides (plastic; why????) and a jack shaft (something introduced by the Brits and Zie...
Forum: 4.0 SOHC / 4.0 OHV Tech 09-03-2012, 02:11 PM
Replies: 13
Views: 1,506
Posted By JDO808
Re: pros please help urgent engine issue

P0171 and P0174 can be a failed PCV elbow and/or clogged PCV valve. I changed both when those codes hit and it resolved the problem. The 02 sensor I believe that you are looking for is on the...
Forum: 4.0 SOHC / 4.0 OHV Tech 09-03-2012, 05:17 AM
Replies: 13
Views: 1,506
Posted By JDO808
Re: pros please help urgent engine issue

Codes? See if you can pull a code because it could be anything fuel, spark or air related.
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