20 Most Recent 1991 Pontiac Grand Prix Questions & Answers

I think it is with the rest of the fuses under the dash or under the hood.

The link below will give some images showing the cam position sensor: 1991 pontiac cam position sensor Google Search You're probably better reading what other Pontiac owners have written: 1991 pontiac grand prix will not tickover Google Search

the flasher unit may be attached to the stearing collum.

Check fuel filter and air,clean throttle body,tune up.

Duplicatwe question

Duplicate question.

Duplicate question

You will need to remove the steering wheel and replace the multifunction switch,

Have you removed any of the injectors recently? The reason I ask is because I replaced one of the injectors on my Lesabre and the o-ring didn't seat properly. Then upon restart I had the infamous 3 second run/ VATS problem. Anyway, if you haven't messed with the injectors try using another key. If that is not an option then you need to measure the resistance of the little pellet that's in the key. Once you have that value, then you'll need to go to Radio Shack and pick up one of their assortment packs of resistors and create that same number plus or minus 10%. then you'll need to find the small white wire that goes to the BCM and insert those resistors in line.

Sounds as though the fuel pump is worn out.

open the door and check on the side of the dash if its not there it could be on the passenger side if not then look underneath on the driver side

I had an older vehicle that overheated. I flushed out the radiator twice, but it was so clogged up, I had to replace it, so check the radiator. If you inspect the radiator from the filler neck, you can see if there is crud build-up on the tubes. The problem could be the water pump. Typically when water pumps fail, they start to leak from the weep hole(s) on top and /or bottom. Is there any leak from the pump? If there is, that is indication that the pump need to be replaced. Hope this helps !

91 Grand Prix SE: If you can turn car off with the key, but can't get the key out - first thing you should check is to see if the button on the shifter is fully releasing (the button on the shift handle you have to push to shift out of Park).