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Originally Posted by Marcus
What things should I look into? This truck doesn't have a check engine light, so how do I get the codes off? By the lower left of the dash there is a purple connector, is this related to the ECU?
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the basics being tune up items; plugs, wires, timing, and filters. make sure all are in good condition and not fouled, dirty, cracked. if you have a repair manual there is a section for maintenance it will go over all of the above items plus some. always start with the basics on driveability problems, alot of times these items are overlooked by many drivers. from there you can pull DTCs (diagnostic trouble codes) from the computer. many older vehicles this is done by a jumper, repair manuals will cover this and how to read them.
