Mechanics

SLUGGISH ACCELERATION

2004 GMC Envoy

Engine Performance problem
2004 GMC Envoy 6 cyl Four Wheel Drive Automatic 80000 miles

Right now I am experiencing a sluggish response when I hit the gas. Car takes a while to catch then accelerates and runs fine, as I let go of gas pedal then step on it again same sluggish response. Also there is a slight vibration when I start the truck and just idle in park. I feel like the truck is choked or clogged somewhere. But don't know what to check or clean etc. I have recently had some work done to the truck

New ignition coil, spark plugs and valve cover gasket
Replaced Power train control module
New computer as check engine light was staying on
New engine mounts, transmission mounts, rear sway bar links. Left and right lower ball joints, replaced lower control arm bracket and bushing lft and rght.
New water pump
Replaced thermostat housing
Replaced Map sensor
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2004 GMC
May 5, 2008.



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