Ok, now this is just getting annoying.
Following on from my last thread "214 crazy engine - episode 2" I have recently replaced the throttle pot and stepper motor on my '93 214 Spi.
When started from cold, idles fine at about 1000rpm, it will pull off and drive fine until i stop, when it dies. A quick lift up of the clutch if it's still rolling and she fires straight back up, again drives fine. Once it's warmed up the stalling problem goes away, but the idle speed is now just under 2000rpm. Sometimes I can be sitting still with it idling normally and it will suddenly jump up to 2k rpm. Even then it sometimes jumps a second time to about 2250rpm.
Also, when driving at any speed, it seems to lose power and slow down, when I put my foot down, it takes a few seconds to react, and seems to misfire and cough before accelerating normally.
I can get it to slow down occasionally by putting it in gear and lifting the clutch while holding the brakes, then it will sit at 1500rpm when i release it. But this won't do my clutch any good and it doesn't work all the time anyway.
I've searched the forum and found idle speed seems to be a common fault on th spi (MEMS) system and there seems to be lots of different fixes, and an ECU change will only offset the problem for a few months. Anybody got any ideas? The throttle body isn't sticking, the inlet manifold doesn't seem to be leaking, throttle pot and stepper motor have both been changed already.
Following on from my last thread "214 crazy engine - episode 2" I have recently replaced the throttle pot and stepper motor on my '93 214 Spi.
When started from cold, idles fine at about 1000rpm, it will pull off and drive fine until i stop, when it dies. A quick lift up of the clutch if it's still rolling and she fires straight back up, again drives fine. Once it's warmed up the stalling problem goes away, but the idle speed is now just under 2000rpm. Sometimes I can be sitting still with it idling normally and it will suddenly jump up to 2k rpm. Even then it sometimes jumps a second time to about 2250rpm.
Also, when driving at any speed, it seems to lose power and slow down, when I put my foot down, it takes a few seconds to react, and seems to misfire and cough before accelerating normally.
I can get it to slow down occasionally by putting it in gear and lifting the clutch while holding the brakes, then it will sit at 1500rpm when i release it. But this won't do my clutch any good and it doesn't work all the time anyway.
I've searched the forum and found idle speed seems to be a common fault on th spi (MEMS) system and there seems to be lots of different fixes, and an ECU change will only offset the problem for a few months. Anybody got any ideas? The throttle body isn't sticking, the inlet manifold doesn't seem to be leaking, throttle pot and stepper motor have both been changed already.