DPR. It normally fails in "limp home" mode, which is wide open. Yours is doing what mine did to me....failing shut. Thing of it is, when mine dies, the car tried to drive itself. Idled all kinds of screwed up, and wouldn't engine brake. Instead of slowing down, it revved itself to 4K rpm, and took off for about 2 seconds. Pretty scary in traffic, let me tell you. Try disconnecting it -before- starting the car, and driving it like that. If you make it past your normal point of failure, you have your answer. You may want to test the o2 sensor as well, as it's signal comtrols the DPR.
-Dave '91 Jetta GTX 16V '88 Jetta GLI 16V In a message dated 6/14/01 12:43:43 PM US Eastern Standard Time, [email protected] writes: > In the morning when the engine is cold and the car has been sitting > overnight the car will start on the first try and idle fine. The engine > will rev freely. The car has full power and is driveable. I start on > my way to work. W/in the first 5 minutes of my trip the car will start > to loose power. It doesn't just die instantly, it's a slow death. > After I get the car off the road (the person who's driveway I stop in > every morning must think I drive a real shit box), if I attempt to > restart the car it will turn over, catch (u know how the 16V rev a bit > when started, then settle back down to idle), idle properly for 2-4 > seconds, and then die. It will do this repeatedly. If I have the > patients to go thru this for long enough, like 20-30 minutes, it will > eventually start and run fine. > > To speed up the starting process, I unplug the electrical connector > to the DPR. The car starts and idles fine. It is driveable, but like > shit. I know why, b/c the computer is in default mode. I drive the car > in this manner long enough for the engine to warm up (10-12 minutes). > Then I stop, turn off the car, plug the connector for the DPR back in, > and the car starts fine and runs fine. This lasts for the rest of the > day!! I have yet to experience this problem again during the day after >
