Hey guys, im pretty stumped on this problem im having and would like any feedback on what i else i could check.
Background-
-1989 325i
-stock eta bottom end
-bimmerheads dual pattern turbo cam
-welded middle coolant passeges (this head was bought from a P.O)
-VAC dual valve springs
-HD rockers/new eccentrics
Problem-
-Car stalls when warm, specifically when the coolant temp sensor gets warm.
-with a different sensor plugged in outside the thermostat housing the car wont stall. but as soon as i hold a lighter to it to simulate operating temps the car stalls.
-stumbles when pressing the throttle quickly
-stalls when rpm's get too low, but stays running if i hold the throttle above 1k
-no problems from stomp test (code 1444)
-gauge cluster goes to 0rpm then to 800rpm when i turn it off and take out the key
What's been tested/done
-swapped wiring harness
-vacuum leaks fixed. Smoke tested/New gaskets top to bottom
-swapped ecu
-new cap, rotor, cps
-fuel pump holds pressure even when it stalls (~42psi min)
-alternator replaced
-new coolant temp sensor
-swapped ICV and AFM
-swapped injectors and FPR
-swapped o2 sensor
-swapped coil
-new plugs
-swapped trigger wheel
-swapped intake manifold
-replaced ground straps
ill be updating the list as i test out more things.
Background-
-1989 325i
-stock eta bottom end
-bimmerheads dual pattern turbo cam
-welded middle coolant passeges (this head was bought from a P.O)
-VAC dual valve springs
-HD rockers/new eccentrics
Problem-
-Car stalls when warm, specifically when the coolant temp sensor gets warm.
-with a different sensor plugged in outside the thermostat housing the car wont stall. but as soon as i hold a lighter to it to simulate operating temps the car stalls.
-stumbles when pressing the throttle quickly
-stalls when rpm's get too low, but stays running if i hold the throttle above 1k
-no problems from stomp test (code 1444)
-gauge cluster goes to 0rpm then to 800rpm when i turn it off and take out the key
What's been tested/done
-swapped wiring harness
-vacuum leaks fixed. Smoke tested/New gaskets top to bottom
-swapped ecu
-new cap, rotor, cps
-fuel pump holds pressure even when it stalls (~42psi min)
-alternator replaced
-new coolant temp sensor
-swapped ICV and AFM
-swapped injectors and FPR
-swapped o2 sensor
-swapped coil
-new plugs
-swapped trigger wheel
-swapped intake manifold
-replaced ground straps
ill be updating the list as i test out more things.
Comment