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Dodge Dakota Engine and Underhood Questions

384 messages,  Last post on Dec 07, 2009 at 5:00 PM

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#360 of 384 2001 Dodge Dakota running rough by fbjr55 Oct 08, 2009 (2:09 pm)
My 4.7 L 4X4 extended cab Dakota has been running rough for about 7 months. It idles rough and sometimes when you accellorate from idle the engine misses until it catches after a second or two. Most of the time it runs fine at speed, however occasionally it seems to get in a mode where it seems like it not firing on all cylinders. Usually when this happens if you stop the engine and restart it, the engine runs smooth again. I have taken it to the shop twice for this issue. Each time the camshaft sensor and crank sensor was replaced which improved but did not fix the issue. The last shop who worked on it told me to take it to a dealer so the wiring and computer can be checked. They said it had to be a loose wire or a computer issue. He said the dealer has equipment to tell if a wire has a bad connector ( some kind of wiring harness diagnostic tool which only the dealer has). I am kind of gun shy because I have put a lot of money into this allready without it being fixed. It has also blown the ASD fuse in the power distribution panel (3 times). I have allready sank more money than I can afford into this. My questions are 1 Have you heard of this combination of issues before and if so do you have any idea what maybe causing it? 2.If I take it to a dealer, do they actually have some kind of tool that will diagnose the wiring and tell which wire is the issue.   I love my truck but I have never had any issues like this with any vehicle before. Thanks for any help and advice. Replies to this message: bpeebles (Oct 08, 2009 5:16 pm) fbjr55 (Oct 22, 2009 5:14 pm) srs_49 (Oct 23, 2009 2:27 am) header1974 (Oct 23, 2009 5:01 am) bpeebles (Oct 23, 2009 2:38 pm)
#361 of 384 Re: 2001 Dodge Dakota running rough [fbjr55] by bpeebles Oct 08, 2009 (5:16 pm)
Replying to: fbjr55 (Oct 08, 2009 2:09 pm) Dont you wish that mechanics only get paid IF THEY FIX IT?   BTW, if you have had the very same sensors replaced several times... I hope you realize that you do not have to pay for any more than the 1st one. All Dealer parts are waranteed and if they have to be replaced again, the original part must have been bad so it is 'covered'.   Personally, I cleaned the IAC . (Idle Air Controller) once a year when I had the 4.7L semi-hemi engine. This always improved idle smoothness.   Dont forget that your 4.7L has COP (Coil On Plug) ignition. The coils are swappable if you need to isolate a bad one. Replies to this message: fbjr55 (Oct 22, 2009 5:14 pm) srs_49 (Oct 23, 2009 2:27 am) header1974 (Oct 23, 2009 5:01 am) bpeebles (Oct 23, 2009 2:38 pm)
#362 of 384 1993 dakota 4x4 3.9 v6 magnum oil pressure by dchap110 Oct 09, 2009 (4:24 am)
hi i have a 1993 dakota v6 magnum when i first crank it the oil pressure is great! after about 20 miles it looses oil pressure and the engine starts knocking any i dea what this could be? was told it may be oil pump. if so how do i change it and are there any online places that i can see a free repair manual thanks!! Replies to this message: srs_49 (Oct 09, 2009 4:52 am)
#363 of 384 Re: 1993 dakota 4x4 3.9 v6 magnum oil pressure [dchap110] by srs_49 Oct 09, 2009 (4:52 am)
Replying to: dchap110 (Oct 09, 2009 4:24 am) Bummer. Hope you haven't hurt your engine.   Not aware of any free on-line manuals. The manuals, either those from the manufacturer or from a third party are copyrighted. Posting them would probably be a violation of copyright law. There are some on-line sites where you can subscribe to manuals for an annual fee, I think.
#364 of 384 1993 4x4 v6 magnum dakota oil pump by dchap110 Oct 09, 2009 (4:57 am)
can anyone walk me through the process of changing the oil pump?? thanks Replies to this message: bpeebles (Oct 09, 2009 5:05 pm)
#365 of 384 Re: 1993 4x4 v6 magnum dakota oil pump [dchap110] by bpeebles Oct 09, 2009 (5:05 pm)
Replying to: dchap110 (Oct 09, 2009 4:57 am) Before you replace the oil pump, have you tried a good cleaning?   My daughters 1st car tended to 'rattle' when the engine got hot. This was because the hydrolic-lifters were so cruddy that they would not hold pressure.   I ran some "STP oil treatment" in it.... that INSTANTLY fixed the oil-pressure. (because it is a viscosity-improver.)   The next time I changed the oil, I expected the rattling to come back.... to my amazement, the "STP oil treatment" other feature (detergents) had cleaned out the lifters and that car never-again had that problem.   Also, you may wish to run a slightly-thicker oil... this is a MUCH less expensive way to resolve such a problem.
#366 of 384 Re: 2001 Dodge Dakota running rough [bpeebles] by fbjr55 Oct 22, 2009 (5:14 pm)
Replying to: bpeebles (Oct 08, 2009 5:16 pm) Thanks, however I am being told that there is a bad connection or computer. Currently I have trouble codes 352 351 357 and 1391. 1391 is loss of signal from crank or cam shaft sensor. Both of these have been replaced. In addition the truck has been blowing the fuse for the ASD relay. My funds have allready been exhausted in trying to fix this. My thought is if it is a wiring issue, then the codes and the blowing fuses should help isolate which wires to check first. Thanks in advance for any guidance you can give me.   Also something I found out that I was unaware of. If you turn the ignition on and off three times, your trouble codes will show on your odometer. Cool. Just wonder why I have not seen it in any of the manuals. Replies to this message: srs_49 (Oct 23, 2009 2:27 am) header1974 (Oct 23, 2009 5:01 am) bpeebles (Oct 23, 2009 2:38 pm)
#367 of 384 Re: 2001 Dodge Dakota running rough [fbjr55] by srs_49 Oct 23, 2009 (2:27 am)
Replying to: fbjr55 (Oct 22, 2009 5:14 pm) Cool. Just wonder why I have not seen it in any of the manuals   Because they want you to bring the truck into the shop for a service visit and be able to bill you for it.
#368 of 384 Re: 2001 Dodge Dakota running rough [fbjr55] by header1974 Oct 23, 2009 (5:01 am)
Replying to: fbjr55 (Oct 22, 2009 5:14 pm) Not sure with that many codes. What is going on with acutal running of the truck? are there any mechanical issues you can notice? If not then I might think about disconnecting negative cable to battery and the reconnect 15 minutes later. It might reset itself which happen with my truck when I replaced the TPS. Did you try this when you replaced the carak and camshaft sensor? I know that when I did this is reset the computer and no longer got the code this was after fixing the problem. let me know if this works Header1974
#369 of 384 Re: 2001 Dodge Dakota running rough [fbjr55] by bpeebles Oct 23, 2009 (2:38 pm)
Replying to: fbjr55 (Oct 22, 2009 5:14 pm) Just wonder why I have not seen it in any of the manuals. The FACTORY shop manual clearly explains this (and many other) troubleshooting capabilities of your Dakota.   *)The FACTORY shop manual has step-by-step instructions how to troubleshoot/isolate most problems. *)The FACTORY shop manual lists, diagrams and locates EVERY electricial connector in your Dakota. *)The FACTORY shop manual has paragraphs describing EVERY component and its function. (Automatic-xmission chapter is 100s of pages)   I suspect you are not looking in a FACTORY shop manual. All the other ones (Chilton, Hanes...etc) have no connection to the factory and are very careful to NOT infringe on copywright of the FACTORY shop manual.... thus they necessarrly do not have the same content.

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