Buick Lesabre Camshaft Postion Sensor Keeps Going Bad

The 1990 Buick 3800 Lesabre was a car my father purchased 10 years before his death and I have repainted and restored it to like new and drive it daily. Problem is the cam sensor I have replaced 3 times. Have check the magnet on and it is in place. After first replacement it worked for a week before failing.

Reply: Do you have an engine light and code?

Yes but I do not remember the code number.

buick lesabre


A trouble code number would be very helpful. Well, if you have replaced the sensor several times and the magnet on the cam gear is good, you may have a wiring problem or a bad batch of sensors. Are you getting the same brand sensor from the same store?

Yes Your correct I have ordered a new male plug and once again verified the magnet is there. Is there a way I can detect voltage? or check for a signal (power to this) ?

Does the sensor show any signs of being scrapped by the magnet?

Anyway to check the sensor? No, very clean

OK. There are test that can be done to check the output of the sensor, but being that it is a 1990, it may take me some time to find, since i would have to look at some of my old paper service manuals. If you would like to leave me your e-mail, maybe i can get you that info later tonight or tomorrow.

Thanks Yes.

I am in Chicago. One thing you can do also, is after the new sensor is installed and the car is running fine without a check engine light, start moving around the wiring harness to see if you can get the light to come on. You may not have bad sensors at all, just a wiring problem.
Look for an email from us- it may have a picture attachment, so depending on your email setting, it may go to your spam.

In my email just tag it Buick and even with a attachment I can receive. Yep I been in Chicago I live in Cleveland and raised my family.
I have copied this info and looking forward.
Thanks man and have a good evening.

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