Hey guys. Getting kinda frustrated with this one.
My brother's car (91 325i manual swapped, all stock ecu, 17lb injectors, 4.10 diff) is having an issue where at highway speeds the car cuts out pretty violently, but at no specific RPM or speed.
The econometer also seems to lose signal when the car cuts out, but the tach stays consistent. Is it possible we are still losing timing data?
Parts we have thrown at it:
New CPS
Swapped ECU
Swapped AFMs
Swapped Coils
New fuel pump
New fuel filter
New fuel pressure regulator
New Ignition Wires
Swapped plugs
New injector harness
New coolant temp sensor (ecu)
Swapped distributor caps
New TPS
Vacuum leaks all sealed up
Cleaned/rebuilt injectors
New valve cover gasket
Swapped fuel pump and main relays
Unplugged O2 sensor
Again it only happens at freeway speeds in higher gears.
Next step is go probe the fuel pump for power and the ECU during the cutting out. Which pin should I be probing on the ECU to check for power?
Any suggestions would greatly appreciated!
My brother's car (91 325i manual swapped, all stock ecu, 17lb injectors, 4.10 diff) is having an issue where at highway speeds the car cuts out pretty violently, but at no specific RPM or speed.
The econometer also seems to lose signal when the car cuts out, but the tach stays consistent. Is it possible we are still losing timing data?
Parts we have thrown at it:
New CPS
Swapped ECU
Swapped AFMs
Swapped Coils
New fuel pump
New fuel filter
New fuel pressure regulator
New Ignition Wires
Swapped plugs
New injector harness
New coolant temp sensor (ecu)
Swapped distributor caps
New TPS
Vacuum leaks all sealed up
Cleaned/rebuilt injectors
New valve cover gasket
Swapped fuel pump and main relays
Unplugged O2 sensor
Again it only happens at freeway speeds in higher gears.
Next step is go probe the fuel pump for power and the ECU during the cutting out. Which pin should I be probing on the ECU to check for power?
Any suggestions would greatly appreciated!
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