I've got a 81 Monte Carlo Landau Turbo survivor that i'm slowly putting back to right. Interior looks great, exterior straight and complete but needs paint - a good 20 footer. Black with burgandy interior, T-Tops, checkered flag mags.
Motor has been giving me fits. Didn't run when i got her so dug in there first. Good compression, cleaned up and rebuilt everything above the heads, checked out the Turbo. Put her back together and she runs if the 4 pin connector is disconnected at the distributor but very little boost (1 pound according to my external guage taped to the windshield
) and very little oomph. Timing is set per specs, 15 degrees in drive with idle at 650 and this connector disconnected.
When i hook the 4 pin up, it retards the timing and she barely idles, won't take the gas, occasional backfire. Barely enough power to move the car.
Knock detector is new and i pulled the computer and ECS to ohm out all the connections - it reads same ohms from connector under dash as right at the sensor. Didn't see any burned components on the ECS or ECM, cleaned the connectors and put it back together.
Ignition module has been replaced twice with two different brands.
MAP and BAP sensors are new, as is the oxygen sensor - these three got the computer to go into closed loop and control the carb - now when i hook up the 4 pin she runs bad but the "check engine light" goes out!
But I can't seem to figure out what is causing the ECM/ECS to retard the timing.
Any ideas?
Thanks in advance!
Dave
Motor has been giving me fits. Didn't run when i got her so dug in there first. Good compression, cleaned up and rebuilt everything above the heads, checked out the Turbo. Put her back together and she runs if the 4 pin connector is disconnected at the distributor but very little boost (1 pound according to my external guage taped to the windshield
) and very little oomph. Timing is set per specs, 15 degrees in drive with idle at 650 and this connector disconnected.When i hook the 4 pin up, it retards the timing and she barely idles, won't take the gas, occasional backfire. Barely enough power to move the car.
Knock detector is new and i pulled the computer and ECS to ohm out all the connections - it reads same ohms from connector under dash as right at the sensor. Didn't see any burned components on the ECS or ECM, cleaned the connectors and put it back together.
Ignition module has been replaced twice with two different brands.
MAP and BAP sensors are new, as is the oxygen sensor - these three got the computer to go into closed loop and control the carb - now when i hook up the 4 pin she runs bad but the "check engine light" goes out!
But I can't seem to figure out what is causing the ECM/ECS to retard the timing.
Any ideas?
Thanks in advance!
Dave
