20 Most Recent 1993 Pontiac Grand Prix Questions & Answers

you need to trace down the vacuum leak and stop it so it can lower the rpms on the car.

1993 Pontiac... | Answered 2 days ago

Simply go to a local parts or hardware store and get a piece of vaccine hose that's identical in size(take your old hose from your map sensor with you if at all possible to match up the sizes), then buy the length you need as it's usally sold by the foot and take it back home an qndbinsrall it in place of the old one. If you have vacuum leaks or anything like that you can find the source by spraying carburetor cleaner very gently(like a mist) on the various vacuum lines of the engine(and the intake manifold) and it'll be very obvious if you hit a vacuum line that's leaking. Google how to check vacuum lknes with carb cleaner or watch a YouTube video explaining it and it'll be a trick you'll never forget, it's sinpe and effective! See Below, best of luck my friend!

1993 Pontiac... | Answered on Mar 17, 2019

Check the rest of your cooling system but It sounds like you need at least one electric fan since one is defective. It may just be a wiring issue, check this before you buy or replace Andy fans. Next, I'd look closely at the water pump, radiator, all hoses, heater core, etc. Also, check the engine oil and make sure it looks normal, again black or the "prettier" golden/brown color. If the oil is "Milky" looking or much too full, or if your radiator has an ugly substance itvit that'll also look "milky" then you're likely to have a blown head gasket. If you're suspicious of this, get a free Copression Tester from Auto Zone or a local parts store and Test each cylinder while recording the compression evens of each cylinder on a piece of paper.

Hopefully it's nothing major, and you can wire the fans to work all the time, whenever the key is on and if so don't worry as Mandy of us have done this before. Do some more troubleshooting to find the root cause of the overheating. You'll get it, just let us know if we can help further. The video below will show you how to get a god start on this problem!

If you've found this helpful, even a little, please click the Green "HELPFUL" Icon to let me know.A few words left as a review or testimonial is much appreciated, file me for more cost effective solutions to everyday issues both large and small!



1993 Pontiac... | Answered on Mar 07, 2019

do an internet search for "idle learn procedure" for your car and follow the steps. worked great for my 93 grand prix

1993 Pontiac... | Answered on Nov 03, 2018

No spark is always easy. Don't worry.
Take a deep breath and ask your oldest zgzm wrecking yard. FDo not tell them the whole story. Just say no spark.
First clean all the battery terminals. Remove amd replscevsll fuses hat have any chance if being an engine fuse. Relays too. Replace engine run telsybeith read window defroster relay. Or horn relay.
It's going to be something simple.
But you gotta teach it down slowly. One simple step at a time.
Fuses relays dirty terminals.
Often it is the terminal connection. Or a Pigtail near the terminal.
It's an older car. Something is corroded. It'll be a simple fix once you find it. .

1993 Pontiac... | Answered on Jan 14, 2018

Get a code reader and check for trouble codes (DTCs).

1993 Pontiac... | Answered on Dec 03, 2017

Take it to a qualified repair shop ! Obviously you don't have the knowledge or tools to diagnose a problem like this . So do yourself a favor an save yourself some aggravation , I could tell you some thing's that it mite be . That would only be a guess on my part , without doing proper testing . Would you replace more parts if i said it was this or that ? That isn't the right way to diagnose an repair vehicles .

1993 Pontiac... | Answered on Mar 12, 2017

On this website (link below) you find fuse box diagram and description for Pontiac Grand Prix 1993

Pontiac Grand Prix mk5 Fifth Generation 1993 fuse box diagram Auto Genius

1993 Pontiac... | Answered on Feb 26, 2017

Tune up could be bad plugs dirty and rusted.Use AC Delco.Any codws?

1993 Pontiac... | Answered on Oct 11, 2016

Have you run a fault code test on the engine control module?

1993 Pontiac... | Answered on Oct 10, 2016

for easy and best solution go to this site
Best Manuals

1993 Pontiac... | Answered on May 18, 2016

ok now you add a new post
and add 3.1L V6 , clear that.
but spark or cam?
all cars have cam timing and spark timing.
some newer cars the cam sensor is fixed, but not yours. i bet.

why not , pray tell, say what you removed. or fiddled with.

1993 Pontiac... | Answered on Jun 26, 2015

spark or cam ?????????????????
and which engine, some cars have up to 10 choices.
most are about 3 or 4.
not of this can i guess.

1993 Pontiac... | Answered on Jun 26, 2015

Start by checking your fuel pressure. You should ave 5-10 lbs of pressure. If you don't have that amount of pressure you should check your fuel filter. If you check your filter and it is clear and you have the right amount of fuel pressure then you may have an injector problem that is best solved by replacing all of the injectors. If non of this helps please give more information on how the engine runs at idle (smooth, rough, spit, spudder) and such as that as you may have an ignition problem.

1993 Pontiac... | Answered on Mar 16, 2015

There are two bolts on the top of the light assembly that need to be removed. you can see them with the hood up.
After that, you can work the headlight / signal light assembly forward enough to remove the bulb retainer ring and wiring harnesses.
installation is the reverse of dis-assembly.

1993 Pontiac... | Answered on Jan 05, 2015

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