Dad always said to look at the most simple things first, so my thought
is check your basic systems. Dont forget fuel, a bad tank can cause
rough idle, you may want to put in some octane boost and cleaner. You
pretty much covered ignition, but check your wire arrangement, it could
be a simple crossover that causes your problem. I dont know what sensors
you have, you have a '90 I have a '99, just a little different i'd
assume. Go through ALL of them, one thing that seems like nothing could
be the root of your concerns. Now, dont have too much fun! Later.
AR
awheeler wrote:
>
> DLM'ers,
>
> I need some help. I drive a 1990 Dakota 4x4 V6 and 80K miles. Recently the
> truck has started idling very badly. It seems to run fine except the idle is
> very rough. I have a great mechanic and he hooked it up to a snap-on computer
> and it didn't register any error codes. He thought it was the MAP sensor but
> a new one didn't make it run any better. I take very good care of my DAk, she
> has never seen 3000k miles w/o an oil change. I put in champion truck plugs, a
> new dist cap and rotor and new plug wires in May and they all seem to be
> working great. The only modifications I have made are a K$N filter in an open
> element housing. Could the O2 sensor cause this problem? I have looked the
> engine over several times to look for vacum leaks but I cna't find any.
> Please throw any ideas you may have at me. I'm hoping there is just some Gen
> I trick to this whole thing. Thanks
>
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