Originally Posted by JayDee
For sure the dealer can read it, I'm about a 4 hour ride to the nearest dealer, I do some simple checks before I bring it in. I haven't brought mine to a dealer in years.
JayDee you need one of the two ecu software tools if nothing else to research any engine problems that do not throw an engine light code.
In addition, while you are performing your checks look at the low-tension lead going to the three coils. They get loose and corroded and cause the engine to run ruff at times this is due to a loss of connection followed by a momentary loss of spark at the spark plugs. Make it do weird stuff like surging and mss firing. Clean the post on the coils and the wire plugs and crimp them more with a pair of needle nose pliers lubricate with dielectric grease and re-install.
the coil wires I am referring to one green one brown the number 1 coil is the hardest to get at but worth checking and cleaning all three
also there are three hoses comonf from the throttle bodies plus plug caps on all of them one on each and two on the rear throttle body they get weathered and leak this causes a vacuum leak and sparratic running of the engine as well.
Number 1 TB
Number 2 TB
Number 3 TB