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mwebb · 08-01-2010, 01:48 AM

what is below is reposted from earlier in this thread
in a GEO G10 engine
see CMP CKP Sync
i believe now that in your engines there is a difference in the CKP CMP waveforms between the 2005 and 2007 engines

in red and blue , the simplest of the simple CKP CMP waveform s and their relationship - if there is a difference of deviation of the CKP waveform to the CMP waveform because the newer engine is mechanically different with a different set of teeth on the Crankshaft and or Camshaft
the waveforms will not match and
the ECM will have a conniption - if either of you can provide Enhanced GM DTCs there should be a hint there

================================================== =
the blinking CEL means
the ECM thinks you have a cat killing misfire , stop driving right now .

so
there should be a P030X DTC where X is the number of the misfiring cylinder .
try to get your car to someone with
a scan tool with
GM Enhanced software ,
i believe the scan tool you are using is not up to the challenge.

the other (unlikely) possibility may be
CKP CMP alignment or more likely in compatibility because the replacement engine has a different crankshaft or camshaft wheel / teeth set than the original engine .

IF hot intake vacuum is 20 to 21" then there is no Cam Crank misalignment error , what is your intake vacuum ?

08-01-2010, 01:48 AM	#33 (permalink)
mwebb Master EcoModder Join Date: Jul 2009 Location: New York Posts: 513 no nickname , it's just a car - '04 volkswagen golf tdi Thanks: 2 Thanked 101 Times in 74 Posts	reluctor teeth on the crankshaft or camshaft what is below is reposted from earlier in this thread in a GEO G10 engine see CMP CKP Sync i believe now that in your engines there is a difference in the CKP CMP waveforms between the 2005 and 2007 engines in red and blue , the simplest of the simple CKP CMP waveform s and their relationship - if there is a difference of deviation of the CKP waveform to the CMP waveform because the newer engine is mechanically different with a different set of teeth on the Crankshaft and or Camshaft the waveforms will not match and the ECM will have a conniption - if either of you can provide Enhanced GM DTCs there should be a hint there ================================================== = the blinking CEL means the ECM thinks you have a cat killing misfire , stop driving right now . so there should be a P030X DTC where X is the number of the misfiring cylinder . try to get your car to someone with a scan tool with GM Enhanced software , i believe the scan tool you are using is not up to the challenge. the other (unlikely) possibility may be CKP CMP alignment or more likely in compatibility because the replacement engine has a different crankshaft or camshaft wheel / teeth set than the original engine . IF hot intake vacuum is 20 to 21" then there is no Cam Crank misalignment error , what is your intake vacuum ?