This has to be normal. When coasting down.....
Thread Starter
|
Posting Guru
Joined: Jun 2005
Posts: 1,803
Likes: 0
From: Amarillo, TX
This has to be normal. When coasting down.....
.... and the RPM's hit 2k or so the engine gets real quite like its off, then once it his 1k the engine come back to life. This has to be normal. But what and why does it do it?
Chris
Chris
Senior User
Joined: Aug 2004
Posts: 352
Likes: 0
From: Racine Wi
There is a coast clutch in the transmission. When you get below 40 mph, the coast clutch opens and the engine goes to idle. It is part of the PCM program and can be changed with a chip. DP Tuner does a real good job with this feature.
Posting Guru
Joined: Sep 2006
Posts: 1,081
Likes: 1
From: Montana
Yeah I wondered about that on my truck. was told it was an interantional (motor)thing to conserve Fuel or some thing, while not under load (coasting) some where around 1300 rpm's. kinda weird if your not used to it. I know I was freaked cause I just bought the truck and thought some thing was wrong. lol
