poor idle and stumble on accelleration after many new parts
Posted: May 15th, 2010, 3:20 pm
Hi,
I've been looking at this forum for quite a while trying to figure out driveability problems on my daughter's car (94 mx3 1.6L DOHC auto). It has a hiccup at idle, where the ignition seems to drop out occasionally, and stumbles upon initial acceleration. I did the HEI mod, but that didn't solve it. I put in a new ECU, no joy. new plugs, tested ign wires, pulled codes, nothing. This is where it gets interesting -
I bought a used distributor and installed it (took out the HEI mod) - voila! runs great!... for a few hours.
Now it is back to its same old self. 
So any ideas? Demonic possession?
Thanks in advance for any help,
James
I've been looking at this forum for quite a while trying to figure out driveability problems on my daughter's car (94 mx3 1.6L DOHC auto). It has a hiccup at idle, where the ignition seems to drop out occasionally, and stumbles upon initial acceleration. I did the HEI mod, but that didn't solve it. I put in a new ECU, no joy. new plugs, tested ign wires, pulled codes, nothing. This is where it gets interesting -
I bought a used distributor and installed it (took out the HEI mod) - voila! runs great!... for a few hours.
Now it is back to its same old self. So any ideas? Demonic possession?
Thanks in advance for any help,
James