Engine runs rough

power steering puts a lot of load on the engine and if the idle compensator does not adjust it dies. a struggling pump can cause more load. when pump gets warm it works easier. Notice how when you check fluid it says hot cold.
Hope this helps Mike

You could've gotten dirt or grease inside the cam sensor connection. They are real fussy.

Replace the crank sensor

cylinder 1 getting too hot causing ceremic crack could have wrong heat range plug in which spark plug too hot.or need replace spark plug wires.one plug wire could be bad best replace all spark plug wires.

code 66 is the a/c pressure switch. which will not make car run rough and stall unless its back feeding power. run engine with ac off and unhook connector to high pressure switch. the most common reason for running rough could be a bad sparkplug or sparkplug wire, check the wires and plugs also check dist cap and rotor for arcing. and last is how old is the o2 sensor, a bad o2 sensor can also cause this problem.

TO SAVE YOU TIME AND MONEY.HAVE TRUCK SCANNED TO SEE WHAT CAUSES SERVICE LIGHT TO COME ON.YOU CAN GO TO AUTO ZONE THEY WILL SCAN IT FOR FREE.BUT IT SOUND LIKE YOUR O2 SENSORS COULD BE BAD.

2004 Pontiac Grand Prix V6-3.8L VIN 2

Power Steering Pump: Service and Repair
Power Steering Pump Replacement
NOTE: The content of this article / image reflects the changes called out by TSB: 05-02-32-004.

Power Steering Pump Replacement
Removal Procedure
1. Remove the accessory drive belt.
2. Raise and support the vehicle. Refer to Vehicle Lifting.
3. Remove the tire and wheel assembly.
4. Disconnect the power steering pressure hose from the power steering pump.
5. Disconnect the power steering return hose from the power steering pump.
6. Disconnect the harness connector (4) from the power steering pump (1).
7. Remove the power steering mounting bolts from the power steering pump.
8. Remove the power steering pump from the engine.
9. Remove the power steering pump pulley from the power steering pump.
10. Remove the power steering pump reservoir from the power steering pump.
Installation Procedure
1. Install the power steering pump reservoir to the power steering pump.
2. Install the power steering pump pulley to the power steering pump.
3. Position the power steering pump to the engine.
Notice: Refer to Fastener Notice in Service Precautions.
4. Install the power steering pump mounting bolts.
Tighten the bolts to 25 Nm (18 ft. lbs.).
5. Connect the power steering pressure hose to the power steering pump.
6. Connect the power steering return hose to the power steering pump.
7. Install the harness connector (1) to the power steering pump (4).
8. Install the accessory drive belt.
9. Fill the power steering system with fluid.
10. Bleed the power steering system.
11. Operate the power steering system and inspect for power steering system leaks.

check the actual fuel line. Also is it fuel injection or carberator

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hi, have a look on here, it has quite a range of manuals...hope you can find what your looking for...if you do, could you please leave a rating on fixya for me....many thanx

Hi! The pulley could be worn or the belt is not properly adjusted.Causing the belt not to grip the pulley but slide on it,creating a friction.