93 240 jerks when foot off gas!
 

Recently rebuilt the top half of my 93' 240 classic. (Head leaking coolant into oil) New air flow bypass valve, knock & oxygen sensors. One injector replaced (leaking) and new fuel pressure regulator.

SYMPTOMS: Idle rough and pulsing. Good power and acceleration, but once I take my foot off the gas the car jerks! I press the clutch and it stops. Also a note: must press gas to start or car jerks!

TEST: Did test on the ECU ignition module (LH-2.4) and the oxygen sensor and throttle switch did not register continuity. No error codes on onboard test unit. Test at Air Mass Meter - no burn off - per Bentley replace ECU??? Tested Throttle switch- needs replacement. I'll replace the ECU and throttle switch and hope for the best!