I have been fighting a no-start condition in my T-Type for some time, and I finally narrowed it down to there being no spark... or at least the spark is so weak that it doesn't arc when the plugs are installed. First, let me say that I have already replaced the ignition module TWICE... it currently has a brand new Borg Warner unit... and it has a known good and tested coil pack on it. I am testing for spark with a timing light, and with the plugs installed, it doesn't light up at all when cranking. I have checked 1, 3, and 5 this way, and none have any spark.
I have gone through the no-start flow chart, and have had some strange results. The noid light test shows that the car IS getting injector pulse, which is supposed to confirm that it is getting a signal from both the crank sensor and the cam sensor. Is this correct? The strange part is that my buddy's OTC scan tool is showing no RPM signal whatsoever when cranking. It just sits at zero. This would seem to indicate that the crank sensor is bad, but would the noid light still flash if this was the case? Is there possibly a backup algorithm for the injectors that would let them pulse even with a bad crank sensor?
Another possibility is that I have my cam sensor installed on the exhaust stroke instead of the compression stroke. Would that cause the RPMs to register zero? they are calculated by both the crank and the cam sensor, right? Somebody help!
I have gone through the no-start flow chart, and have had some strange results. The noid light test shows that the car IS getting injector pulse, which is supposed to confirm that it is getting a signal from both the crank sensor and the cam sensor. Is this correct? The strange part is that my buddy's OTC scan tool is showing no RPM signal whatsoever when cranking. It just sits at zero. This would seem to indicate that the crank sensor is bad, but would the noid light still flash if this was the case? Is there possibly a backup algorithm for the injectors that would let them pulse even with a bad crank sensor?
Another possibility is that I have my cam sensor installed on the exhaust stroke instead of the compression stroke. Would that cause the RPMs to register zero? they are calculated by both the crank and the cam sensor, right? Somebody help!