Now what????
#1
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Now what????
first did shbox opti signal test, (i am a dumbass and did it wrong), i thought the results ment coil, replaced, still no start. Did test right this time, not getting 1 - 4 volts on A/C while cranking w/ DVOM hooked up from B on ICM wires to ground. That meant Opti or wiring or PCM, replaced opti wires, no worky.
Today i replaced the Opti, still no fire, getting the same results on the DVOM test.
I don't know what else to replace other than the ICM (can't find a test for it) Crank sensor (checking it now) and the PCM....
frustrated...... (and hot)
Today i replaced the Opti, still no fire, getting the same results on the DVOM test.
I don't know what else to replace other than the ICM (can't find a test for it) Crank sensor (checking it now) and the PCM....
frustrated...... (and hot)
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yeah, all good, right now doing misc wire chasing, does anyone no which wires from the opti to the pcm should show signal volage while cranking?
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alright, was getting 3 volt high res and 1 volt low res at the PCM from the opti, so i figured it had to be the ECM, put a buddy's ECM in and still same results, i know that some kind of signal is getting to the pcm but maybe its not the right signal???
Today we are going to check for perfect continuety from the opti plug all the way to the ECM, if all that is good i am going to take apart the brand new opti and look for failure...
Today we are going to check for perfect continuety from the opti plug all the way to the ECM, if all that is good i am going to take apart the brand new opti and look for failure...
#5
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AFAIK, the opti sends a signal to the PCM which in turn sends a signal to the ICM which then triggers the coil to fire. If your PCM is getting the right signals (only way to test that properly is with an oscilloscope) and your PCM is not bad, then it could be a faulty ICM not causing your coil to fire.
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#8
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car will turn over all day, meaning not a VATS issue. It was a NIB Delphi from thepartsladi (EBAY). I sent her an email this morning regarding the issue, havn't heard back yet.
#9
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Back on topic...you said that your injectors are not firing. Do you have spark? A easy test would be to have someone spray starter fluid into the TB while you are inside cranking it over. If it starts and runs, then you have other issues than ignition.
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no spark at plugs or at coil, fuel pressure is good, the #1 fuel injector noid test is also a tell tell sign of bad opti, pcm, or wirering, because it gets its signal of when to fire from the opti as well.
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#13
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brand new... i am telling you, i am stumped. http://www.lsxtune.com/shop/product_...roducts_id/928
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does anyone know if a bad crank position sensor can have anything to do with a no start situation?
I have read that it will not, but my local part slingers tell me otherwise. As far as i know the comp and tach both get the rpm's from the cam sensor (opti). Any help?
I have read that it will not, but my local part slingers tell me otherwise. As far as i know the comp and tach both get the rpm's from the cam sensor (opti). Any help?