Petes93cutlass Posted December 4, 2012 Report Share Posted December 4, 2012 So here's whats going on... I swapped a 94 engine into my 1993 Cutlass Supreme. I knew I had to use the 94 alternator and so I spliced in the 94 plug into my 93 harness. Now this 94 3.4 engine has the cam position sensor on the front head which I just didn't use because there is no need for it in the 1993 model year. The same is also for the crank position sensor behind the harmonic. I just didn't plug it in because the 1993 model has no use for that either. In other words, the 1993 model year has no use for the cam position sensor or crank sensor behind the harmonic. I tried to start the car but all it does is just crank. No spark and there is no injection pulse at the fuel injectors because I hooked up a noid light and they did not light up. I hooked up my scanner and starting to crank the engine and noticed that there was no RPM's registering. The scanner indicated that the RPM's were also zero even when cranking the engine. So, I now believe that I need a new crank sensor which I shall just remove from my old 1993 engine. I know that crank sensor works because the car ran like a top with the exception of an engine knock before I pulled it into the garage to do the engine swap. Here is the million dollar question... If this 94 engine I just installed has the crank position sensor behind the harmonic balancer that I didn't use because the 93 model year just doesn't have it behind the harmonic... and knowing that the crank sensor for the 93 model year is on the rear of block by the alternator... then my next question is... does the 94 engine have two crank sensors one on the side of the block and one behind the crank pulley. I know it doesn't have two crank sesnors but when I plugged my 93 harness into that plug where the crank position sensor would be then what exactly is that sensor then on the 94 block I just installed. Quote Link to comment Share on other sites More sharing options...
Petes93cutlass Posted December 4, 2012 Author Report Share Posted December 4, 2012 I think I did something really stupid and just realized it while sitting at my desk at work. The vehicle speed sensor is on the tail of the tranny by the right axle shaft. The crank sensor is on the block above the alternator. Believe it or not, the crank sensor and speed sensor have the connector end. Before I left for work, I noticed the yellow and purple twisted wires that runs from the ignition control module was plugged into the vehicle speed sensor and just put two to two together and just realized the I plugged the wrong connector into the speed sensor. The crank sensor is the one that should have the yellow and purple wire that runs to the Ignition module. Quote Link to comment Share on other sites More sharing options...
Petes93cutlass Posted December 5, 2012 Author Report Share Posted December 5, 2012 My luck... I had the wrong connector plugged into the crank sensor. So, be aware that the crank sensor plug is exactly the same as the speed sensor that sits almost directly behind it Quote Link to comment Share on other sites More sharing options...
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