When I turn on the air conditioner my trailblazer dies. First we thought it was the battery. It started resetting itself every time it set too long. The clock would reset. Then it would start, but hesitate. Then final it wouldn't start at all. Then we had to jump it. Got a new battery. Now it starts. But when you turn on the air it dies. As long as you don't run the air it is fine. If you turn on the air while sitting or idling it dies. If you get the speed up or are driving it is ok, but if you are stoped at a light or just sitting it will die or if you are slowing down to turn with the air on it will die. I have a 1998 Dodge 1500 4X4 with the same problem. When the engine is running it runs perfectly. If I am not running the engine at at least 20 - 30 mph, it will stop when the heater or air conditioner is turned on. If you turn off the AC or Heater , you can easily start the engine and it runs fine until you turn on the AC or heater and it stalls out again. You can run the AC or heater with no problem at hiway speed. The pickup is now intermitently refusing to stay running and idle when it is started. I have founfd that if I start it and put it into gear without giving it a few seconds to idle, it will stall out and then refuse to start again without giving it gas and keeping pressure on the gas peddle. While keeping pressure on the gas peddle I can throw it into gear and once I bring the truck up above 25 - 30 mph it will then allow me to take pressure off of the gas peddle without stalling out. I continue to have the problem with the heater and AC being on while the truck is driven under 25-30m mph as well as the newer problem decsibed above. I took this problem to my local Dodge dealership and they could not make the pickup stall out while they had it, so they couldn't figure out what was casuing the problem.
Sounds likes a Idle Air Control valve IAC problem.
Try cleaning the throttle body
Sounds like a high pressure problem in the a/c system
SOURCE: 1998 Dodge Ram 4X4 Pickup
Try disconnecting the battery (both terminals and let set for a few hours) with ALL the accessorries on lights-heater-radio etc. This will draw all power from your system, then recconnect battery, it's worth a try even if it doesn't solve your problem. Bill
2,266 views
Usually answered in minutes!
This happens to mine too when i run the heat..
The heat and the air conditioner. Also my friend has the same probelm with hers.
×