why does this 91 Buick Regal keep blowing crank sensors on 1991 Buick Regal

We have replaced the ignition and the crank sensor. This is the 5th crank sensor put in this car in last few months

by in Ava, MO on August 25, 2012
3 answers 7 comments
ANSWER by on August 25, 2012
First two questions- 1;Who is diagnosing? 2;where are the replacement crank sensors from?-discount parts store or OEM from dealer?
COMMENT by on August 25, 2012
My husband has a machine and the parts are from OReily's . This fixes the problem every time, but it keeps blowing them
COMMENT by on August 25, 2012
Saw your other replies, glad the problem was found!
COMMENT by on August 25, 2012
Thats what they thought it was Now it wont start at all
ANSWER by on August 25, 2012
Have mechanic check reluctor @ sensor. Surely this has been checked but may mention it anyway. Are you being charged for each part?
COMMENT by on August 25, 2012
They have been under warranty. What exactly is the reluctor?
COMMENT by on August 25, 2012
The reluctor ring is what signals crank sensor does any of the sensors have any markings on them like something has contacted them? Look at the end of the magnet.
COMMENT by on August 25, 2012
Thanks it was a short
ANSWER by on August 25, 2012
I'm not sure what you mean by "blowing", other than they electrically short & no longer work. If so, check the harness running down to the sensor that lies against the engine timing cover & where it makes its exit out of the main engine harness for broken wiring insulation. It sounds like you have a 'short to ground' or 'short to power', basically wires touching things they shouldn't. Also inspect the connector itself for broken insulators & bent contacts. Find where its touching, and wrap it up with elec tape, & you'll prob have solved your issue. If these things are atually getting damaged on the end where the pick-up is located, you have a problem that may only be fixed by replacing your crankshaft pulley assy (it has a steel ring on the inside that may be damaged).
COMMENT by on August 25, 2012
Thanks all it was a short.