Where is the cam sensor located on a 1991 Buick Regal GS 3800?

Answer 1

I replaced one on an 89 3800, it's on passenger side, it's about half way down the block, make sure you don't look at the crank sensor which is at the bottom of the engine. I replaced in by going down from the top of the engine but you can get it by removing the inner fender and going through the passenger wheel well. If I recall correctly is one one bolt. Just a heads up if you are getting a code regarding the cam sensor, you may have had one of the magnets fall off the cam and this is why you are getting the code. I changed out the cam sensor and still had the code because in GM's brilliance they put magnets on the cam and if one of the magnets falls off, you get a check engine light and then have to read the codes. After replacing the cam sensor, the check engien light was still on and come to determine one of the magnets came off the cam and the only way to repair it was to pull the cam and replace it. The engine diagnostics said it was still safe to drive with the check engine light on and it will remain on until the cam is replaced. The cam sensor was not too expensive and was easy to replace, just be ready in case you replace it and still have the light on. If you can go to a library and look up in Chiltons Repair Manual where the Cam sensor is, or buy the part and try to see where it is on the passenger side of the engine sort of behind or under the water pump. Good luck