having idling issues
09-19-2011, 11:32 PM
#1
On The Tree
Thread Starter
Join Date: Aug 2011
Posts: 151
Likes: 0
Received 0 Likes
on
0 Posts
having idling issues motor im working with is a 2000 silverado 5.3l drive by cable.
swapped into a 1979 chevy k20 truck.
mated to a th350/203
the problem im running into here is whether the motor is hot or cold, when i start the truck, the idle shoots way up to 2000 rpm, for about 30 seconds, then gradually comes down to 1500, and over a period of 2 minutes or so it will settle at 800 when its warm.
My brothers laptop (autotap hookup) is telling me desired engine speed is 600 rpm, which im not seeing.
i believe it was the IAC or MAF counts were reading 0 at idle is this normal?
and my dakota digital VSS converter is reading 6-9 mph just sitting still in park.
i have replaced intake gaskets thinking it could be the problem, but cant find a vacuum leak.
any input would be appreciated. thanks
swapped into a 1979 chevy k20 truck.
mated to a th350/203
the problem im running into here is whether the motor is hot or cold, when i start the truck, the idle shoots way up to 2000 rpm, for about 30 seconds, then gradually comes down to 1500, and over a period of 2 minutes or so it will settle at 800 when its warm.
My brothers laptop (autotap hookup) is telling me desired engine speed is 600 rpm, which im not seeing.
i believe it was the IAC or MAF counts were reading 0 at idle is this normal?
and my dakota digital VSS converter is reading 6-9 mph just sitting still in park.
i have replaced intake gaskets thinking it could be the problem, but cant find a vacuum leak.
any input would be appreciated. thanks
