Another Wild vents, but my odd case...
#1
Another Wild vents, but my odd case...
Hi I have a very weird case of wild vents, I know this has been posted before but my case is different. I have a 1996 5.2l 1500 reg cab, when in park I can rev the truck up and the vents don't go to defrost, and in 1 gear usually it doesn't go into defrost but in higher gear (especially on the hwy) it switches to defrost. I have changed the check valve, I have added a check valve to HVAC control. I have added a vacuum tank after the check valve on the keg, I removed since it didn't fix anything. I don't know what else todo, I don't think it's a vacuum because cruise works and the vents work at idle or in park. Thank you for any suggestions I'm really lost.
#2
Put the tank after the check valve for the HVAC controls. It's still the same old problem, losing vacuum on larger throttle openings. In higher gears, you put more of a load on the engine for the same acceleration rate, hence, less vacuum. I don't think you can ever get rid of it completely.... but, the additional tank will help mitigate the symptoms.
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#8
Seems a little crazy to install a vacuum pump on a gas truck? How much would the canister after the HVAC check valve help? Will I see little difference with the canister, the vacuum pumps seem to be a bit pricey for my taste and I don't like all that stuff under the hood, also did all early gas 2nd gens have this problem off the dealership lot?
#9
Seems a little crazy to install a vacuum pump on a gas truck? How much would the canister after the HVAC check valve help? Will I see little difference with the canister, the vacuum pumps seem to be a bit pricey for my taste and I don't like all that stuff under the hood, also did all early gas 2nd gens have this problem off the dealership lot?
#10
Seems a little crazy to install a vacuum pump on a gas truck? How much would the canister after the HVAC check valve help? Will I see little difference with the canister, the vacuum pumps seem to be a bit pricey for my taste and I don't like all that stuff under the hood, also did all early gas 2nd gens have this problem off the dealership lot?