Question about 2003 Pontiac Grand Prix
You need to have knowledge,training & proper equip
to do that safely & not hurt yourself or ruin the a/c system
Have the system checked by a shop that does a/c work
Posted on Jul 11, 2013
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Jul 11, 2013 | Cars & Trucks
Mar 08, 2012 | Cars & Trucks
Following list of possible faults should help:-
Coolant sensor - engine is signaled as being 'cold' all the
time, not just at start up, causing ECU to set longer injection cycle
? Low coolant level can prevent sensor being able to detect coolant
? Faulty 'open' thermostat allows coolant to circulate without regulation
and perhaps prevents the engine from achieving normal running temperatures.
FPR - broken diaphragm allows fuel to enter
the vacuum line and then into the inlet manifold. Additional source of fuel
makes the fuel air mix richer causing a faster and lumpy idle.
Vacuum leak - 'high oxygen' signal
from O2 sensor causes ECU to set longer injection cycle.
O2 sensor - 'high oxygen' sensor error
causes ECU to set longer fuel injection cycle
MAF - 'over reads' in error the amount of air
entering causing ECU to set longer fuel injection cycle
IAT - 'under reads' in error the temperature of incoming air causing ECU to set longer fuel injection cycle
May 10, 2011 | Pontiac Grand Prix Cars & Trucks
Jan 11, 2011 | 1998 Chevrolet S-10 Pickup
Nov 24, 2010 | 1998 Ford Explorer
Jul 22, 2010 | 2006 Chevrolet Aveo
Mar 20, 2010 | 2002 Pontiac Montana
Jun 11, 2009 | 1990 Toyota Corolla
15 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: