| Author | Message | ||
     Adrian Strata (Adrians) New Member Username: Adrians Post Number: 34 Registered: 02-2003 |
91 3.9. When I run the ac my truck starts to overheat after about 20 minutes. Never happens any other time! Replaced the r12 with the new stuff about 6 weeks ago. The r12 leaked out about a year ago so the ac was not used untill recently. AC worked fine 2 weeks ago. AC compressor gone bad? Any other idea's? Will look into it in the morning. Need to get this fixed before MAR!!!!! AdrianS 91 RRC | ||
| Jaime (Blueboy) Senior Member Username: Blueboy Post Number: 747 Registered: 02-2002 |
had the same thing in my '93 RR. replaced the radiator and no problems since. if its the OEM radiator and your's is a '91, you're probably due for a new one anyhow. jaime | ||
| Randall Smith (Mr_smith) Member Username: Mr_smith Post Number: 80 Registered: 04-2003 |
I will look(or listen) for your truck at MAR. Will probably camp on the island with CROC. You should check the fan belt to see if it is loose. The A/C belt is driven by the water pump, so there is a small chance that it is belt related. However I would lean towards radiator corrosion as the cure. If you completely remove the thermostat the cooling system will be much more efficent at transfering heat; because there will me no restriction to the flow. You can continue to diagnose after MAR. Randall | ||
| Adrian Strata (Adrians) New Member Username: Adrians Post Number: 35 Registered: 02-2003 |
Should get my new radiator, fan and vc today. Truck is apart and waiting. Wish me luck. Adrian | ||
| Jaime (Blueboy) Senior Member Username: Blueboy Post Number: 752 Registered: 02-2002 |
pretty sure you'll notice a big difference. while you're in there, might want to pop in a new thermostat. from past experience which was bad, only use the LR ts. its cheap and is the better design than one from another GM engine. jaime |
