Guys maybe someone can point in the right direction. The issue i am having is stalling and deseleration on a new 5.7 that replaced my old 5.0gi. Evrything else is the same cept the engine. The engine has new evrything, if you name it is new. Engine shakes at idle to the point of moving the serpentine belt off the raw water pump tracks. I had several "mechanics" over and everyone wants to toss parts at it. I need some guidance as to what to look at and maybe track down the issue. Today i replaced the spark plug and wires ....again and no change. Did another compression check all cylinders above 145 to 160. Here is a list of the new parts for your enjoyment.
Distributor with cap and rotor
Spark plugs and wires
Ignition coil
Risers and manifolds
TPS
IAC Valve (2x, one from amazon then a mechanic stated that i might be bad so i ordered one from ACDelco and still no change. When i unplug the sensor the engine has no audible or physical change)
Temp sensor
Knock sensor
Oil pressure sender
Fuel pump (10 low, 30 high, both tested constant no drop)
Fuel filter
Oil Filter
Power steering pump
Circulation pump
TBI rebuilt kit
ECM recalibrated for 5.7
Fuel injectors where sent out to be cleaned and flow tested and are working fine. I am sure i am forgetting misc parts but you get the jist of it. Any ideas what could be causing the issue?
Distributor with cap and rotor
Spark plugs and wires
Ignition coil
Risers and manifolds
TPS
IAC Valve (2x, one from amazon then a mechanic stated that i might be bad so i ordered one from ACDelco and still no change. When i unplug the sensor the engine has no audible or physical change)
Temp sensor
Knock sensor
Oil pressure sender
Fuel pump (10 low, 30 high, both tested constant no drop)
Fuel filter
Oil Filter
Power steering pump
Circulation pump
TBI rebuilt kit
ECM recalibrated for 5.7
Fuel injectors where sent out to be cleaned and flow tested and are working fine. I am sure i am forgetting misc parts but you get the jist of it. Any ideas what could be causing the issue?