Odd issue need thoughts
05-11-2010, 11:39 PM
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Odd issue need thoughts Not sure if this is the right forum for this post.
00 Hawk just replaced cam and crank sensor went to dealer today to get sensors calibrated to block.
Back story 1-4th gear under pull out or at about 2500 rpm car bucks shuts off so i swapped the sensors out.
Had dealer guy in car with tec 2 car made one clean pull in first shifted to 2nd and it started that bucking crap again according to the tec 2 the crank sensor passed and failed in the same ignition cycle. Apparently something is dying in that circuit any thoughts on what I should be looking for? Thanks in advance.
00 Hawk just replaced cam and crank sensor went to dealer today to get sensors calibrated to block.
Back story 1-4th gear under pull out or at about 2500 rpm car bucks shuts off so i swapped the sensors out.
Had dealer guy in car with tec 2 car made one clean pull in first shifted to 2nd and it started that bucking crap again according to the tec 2 the crank sensor passed and failed in the same ignition cycle. Apparently something is dying in that circuit any thoughts on what I should be looking for? Thanks in advance.
05-20-2010, 01:58 PM
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Here is where it stands as of yesterday.
Had car on lift to try to duplicate problem. Car worked fine so it seems it will not show up unless under heavy load. We pulled starter and crank sensor to check reluctor wheel it didn't move. We checked the wiring on the ignition system they were good. Used the tech 2 to check the injectors flow rate all fine fuel pressure is right where it should be. Swapped pcms with a friends car. There were a few gm updates so flashed my pcm. Pretty much we are about the point of dropping the engine out tearing it apart to see whats wrong. There is no metal in the oil. Only 2 other thoughts we have atm is a cracked/cracking spring is sticking and causing a crossfire or possibly cam walk. Someone has to have seen something like this before.
Had car on lift to try to duplicate problem. Car worked fine so it seems it will not show up unless under heavy load. We pulled starter and crank sensor to check reluctor wheel it didn't move. We checked the wiring on the ignition system they were good. Used the tech 2 to check the injectors flow rate all fine fuel pressure is right where it should be. Swapped pcms with a friends car. There were a few gm updates so flashed my pcm. Pretty much we are about the point of dropping the engine out tearing it apart to see whats wrong. There is no metal in the oil. Only 2 other thoughts we have atm is a cracked/cracking spring is sticking and causing a crossfire or possibly cam walk. Someone has to have seen something like this before.
05-20-2010, 05:54 PM
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well, my car is doing the exact same thing except it doesnt have to be under load. it shuts off at idle. So, I'm awaiting your resulte too. but a reputable builder in my city said the crank sensor first off when i thought it'd be the oil pump. But, I don't know much about mechanics, i was just trying to use some flow troubleshooting. please keep us posted!