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Hi Im David, thanks for visiting the site. please allow me to look up some info for your vehicle. thank you
ok, what other codes are set. with the conditions you explain there has to be more than that one code.
so the injectors are just feely dumping fuel into the cylinders with the key on?
those injectors shouldnt open until a signal is given to them to pulse. which comes from the ecm ONLY when cranking
the ecm is the only thing that controls injector pulse based on signals from the crank position sensor
P2637=gasoline engines use spark plugs to cause an explosion of fuel within the cylinder. In a properly timed engine, this explosion occurs at the proper moment to send the piston to the bottom of the cylinder and provide power to the drive shaft. If the plug wires are out of sequence, the explosion occurs at the wrong time. The improper timing of the explosion sometimes pushes the cylinder the wrong direction or interferes with the turning of the crank. As a result, the engine stutters or backfires, if it runs at all.
check the timing, and check the crank sensor and reluctor wheel. make sure the crank sensor isnt loose or damaged and make sure the reluctor wheel isnt bent or installed backwards. you're gonna have to put #1 cylinder at tdc on compression stroke and check all the marks
to check the timing you would need to remove the timing cover yes. to make sure the cams on on the marks at tdc and you would need to look at the reluctor wheel once the cover is off. there is no easier way. who did the timing chain and tensioner replacement?
initial timing mark shown here. once the initial timing marks are aligned with the colored links on the chain, the marks on the chain and on the sprockets will never line up again, so you need to make a mark on the rear case for the cams when you set the crank at tdc. then make sure they closely resemble this diagram
if you had the engine at #1 tdc and the timing chain colored links matched to the sprocket marks on the cams, one matched to the "ex" and the other matched to the "int" and hte crank colored link matched up the the das or circle on the crank gear, then that all you have to woory about.
i think its time to look at the computer
hang on a sec. ill send you a pic
i dont think you can just switch it out with out it being programmed to the VIN .
you need a passthrough device like a tech2 scan tool or a drewtech cardaq
then you need to relearn the security system...
turn the key to run and "bump" the crank position...leave the key in run for 11 minutes
then key off and on and repeat 2 more times...total of 11 minutes
then key out 1 full minute and it should start
tap the key into the crank position
turn it to run then to crank momentarily (1/2 second) and then just release the key
it will turn the security light on OR it will flash on and off for 10 minutes
once that light is off OR 11 minutes has passed, you turn the key off and do that procedure 2 more times
anytime you swap a computer, its not just plug n play. i have no ideas what the shops cost we be. everywhere is different
im sure they dont have the exact same issues. first of all there is no way to tell because the junkyard one isnt programmed to the vin. the spark and fuel control is ultimately controlled by the ecm. the only other possible far fetched thing that may fix something here is a crankshaft position sensor.
sounds good. keep me posted
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