20 Most Recent 1997 Pontiac Grand Prix - Page 5 Questions & Answers

I would start by replacing the Crank sensor and the cam sensor.

By sysmptom and careful diagnostic work by a trained automotive electronics technician.

loose battery connection clean and tighten

I had a 98 bonnaville that rode the same, turned out the pan hard bar was bent very little and in rain or snow it was a deat trap, new bar, all good.......

Read your question Can't remember is obvious Your not referring to anything

What do you want someone the GUESS at ? Could you answer a question like that without the vehicle?

po171 is a lean code, and could be likely caused by a plugged fuel filter, or a weak fuel pump, I would recommend changing the fuel filter first since its cheaper.. The filter is located under the rear of the vehicle by the fuel tank, if this doesn't help run, or have run a fuel pressure check to determine if that is the cause. Also look carefully under the hood for any hoses or lines disconnected causing a vacuum leak, this can also cause a lean code

Follow the serpentine belt on the front of the engine. One of the accessories powered by the belt will be the power steering pump, It will have a twist off cap with a dipstick or a sight window to show the power steering fluid level. Don't overfill the reservoir.

your shifter should be in park

WHOA...Who told you to "change the trunk"???? Unless you have been in an accident, that sounds a pretty drastic maneuver. Here's what I would do: 1. Get one of your GOOD friends to help with this 2. Get into the trunk with a flashlight and some paper towels 3. SHUT THE LID (This is where the good friend comes in) 4. Have you buddy run a water hose along the edges of the trunk and you should be able to see where the water is coming in. 5. Check around any thing that is drilled into the fender, like the antennae, etc... 6. If the leak is small (this is where the paper towel comes in), run the paper towel along the trunk gasket to see if you are picking up any small amounts of water leaking in. 7. Be nice to your GOOD friend as he is your "key" to getting out of the trunk. I'd bet there is a trunk gasket that needs to be sealed up in some place(s). Clear automotive silicon sealer is available at your local Auto Parts Store. GOOD LUCK . . .

If you can, connect the wires going to the sensor together when it's dark and the lights should come on. If they do, the sensor is bad.