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Grand Prix

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Question
Cars electricity turns off when turning key
Hi there. Usually this is an indication of either a bad ground wire connection, or battery / starter electrical connections being loose. It is also possible that the battery cables are faulty as well. This could be a very difficult...
Question
Fuel tank
It sounds like you may have an evaporative emissions system leak. Your car has a small purge valve with a purge solenoid in the Evaporative Emissions system that controls the venting of fumes from the fuel tank as these fumes...
Question
Rear brakes..is it necessary to loosen cable at equalizer first then remove cable bracket from behind caliper?
Hi there. The piston is compressed prior to removal and yes - it's a good idea to remove the cable as it makes it easier to remove the brake system. I would highly recommend purchasing a repair and service manual...
Question
My car won't move in drive or 1,2,3 gear but will go backward
Hi there. The issue you've described can be caused by a few different things, ranging from shift solenoid failure, dirty transmission fluid or a leak inside the transmission from an inner seal. It's probably a good idea to have a...
Question
Fuel tank
Hi There, A number of other things may also cause this code to be triggered as well such as a faulty fuel cap, a faulty purge solenoid, a damaged charcoal canister or in some cases a vacuum leak. I would...
Question
Fuel tank
This is a problem likely related to your fuel tank sending unit. The fuel gauge sending unit is a small float type component (or sensor) inside your fuel tank that measures the level of the fuel inside the tank. As...
Question
Knocking noise when car is started.
Hi there. First off, anyone that claims they can correctly diagnose an engine knock or other issue by watching a video should not be considered a reliable source. A knock can come from multiple sources, ranging from low oil pressure,...
Question
ABS system light is on along with traction control light on 2005 pontaic grand prix. is this serious?
Hi there. When these lights are illuminated, it usually means that there is an issue with your ABS sensor or ABS module. The traction control and ABS both are monitored by the ABS module or control unit. Since the ABS...
Question
2001 Pontiac grand Prix 3.1l engine tapping
Hi there. Typically an engine tapping noise is caused by either cylinder head lifters that are loose or worn out, rockers and valves not properly adjusted, a timing belt or timing chain that is loose or crankshaft / cam out...
Question
My car is running HOT and my reduce engine light comes on every now and then. I have an 04 grand prix.
Hello, thank you for writing in. Depending on what testing the mechanic did, he may very well be correct. The computer intakes all of the information from the various sensors and controls the fans. If the engine temperature sensors, fan...
Question
Hello, I have a 2002 Pontiac Grand Prix that sued to be a GTP. I gave a mechanic my car over three weeks ago so that he could put
The smoking may be a consequence of overheating or possibly an oil leak (e.g., oil leaking onto hot engine part). If the engine is overheating, that can be diagnosed in an overheating diagnostic. If there are no stored diagnostic trouble...
Question
What is wrong with my car?
You are correct in that if the motor was seized it would not turn over. It does sound like you may in fact have a blown head gasket. A blown head gasket may cause a number of different symptoms. A...
Question
Overheating
It sounds like the overheating problem may have caused some damage to the motor resulting in additional pressure being created inside the cooling system beyond what the water pump creates. When this happens, this can cause the overheating problem you...
Question
If I drive for more then 10 min temp gauge reads hot then goes back down a little. Also says I have hot coolant. 2007 Pontiac GP
It sounds like you may potentially have a blown cylinder head gasket. A blown head gasket may cause a number of different symptoms. A head gasket that fails between cylinders will generally cause a misfire and potentially compression leaks from...
Question
04 pontiac grand prix car wont start
Hi Joe. Thanks for writing in today. In most cases, when you turn the key and nothing happens, it's due to a faulty starter relay, damaged starter, ignition relay or ignition cylinder that is damaged. Unfortunately, there really isn't a...
Question
My car loses power then won't go over 20 mph its a 05 pontonic grand prix
Hi April. The Reduced Power light usually indicates a fairly serious problem with the throttle system. When this light illuminates the vehicle will often go into a “safe mode”, which will severely limit the speed of the car and in...
Question
2006 Pontiac Grand Prix GT reduced engine power.
Hey there. The reduced power light typically indicates a fairly serious problem with the throttle system. When this light illuminates the vehicle will often go into a “safe mode”, which will severely limit the speed of the car and in...
Question
Code P0171?
Hi there. The P0171 code means that, on the first bank of the engine, the fuel system is running weak or a vacuum leak exists near this side of the engine. A lean condition occurs when the engine either receives...
Question
I have a 2006 Pontiac grand prix. The engine shut down on me, but everything still works inside the car. This is the second time
Depending on what fuse you are referring to, this may impact whether or not the car will start. There are a number of relays that will affect the ability of the car to start such as a starter relay, a...
Question
Check engine light came on after getting new head gasket?
Hi there. It's quite common for a check engine light to illuminate after major vehicle service has been completed. However, the hard part is knowing how to correctly diagnose what is causing this light without a professional digital scanner. Anytime...

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