My trucks check engine light keeps coming on but why?

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FriskyDingo

New member
my truck is running 100%. Then the check engine light comes on, it starts doing weird things like starting in 3rd gear from a stop ( its an automatic) and the idle when in park is very low, just above zero. Then the light goes out and it runs perfect for a day or two, then that bloody light comes back and it runs like crap again. It's been to two different mechanics when hooked up to the code reader no codes come up. I just changed the plugs and wires also the ignition strap. This is getting so frustrating because no one seems to know what to do. AAAAARRRGGGGGGGG!!!
 
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jimmy831831

New member
Mine`s been almost exactly like that for over a year lol, I just got used to it. (Ram by chance?)
There is a shift sensor in the trans that can be replaced, that should clear your shifting issues, as for the engine, cap and rotor, pcv valve, air filter, oil change if it`s old, timing, maybe a bottle of fuel injector cleaner in your next tank of gas, all these are cheap things that can`t hurt to try.
They can`t read the code unless the light is on- next time it comes on take it directly to someone who can scan it for you.
 
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gracien69

New member
Hmmm... Its frustrating ofcourse ,but thats how your truck comunicates with its ECU. My guess is you still have saved codes that need to be purged after the problem with your trans is solved. Even if your engine is in the best of health the CPU monitors other operations as well. My suggestion translate those codes through a competant transmission shop / mechanic. :)
 
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