Well, I would say that we are pretty close to junking this car.
Perfect body, new paint, good interior but this electrical gremlin we
are chasing is getting the better of us. The problem started with an
intermittent starting/running problem. Car would fire but die as soon
as you let off the key. Investigation of relays, etc. did not really
fix anything but after fiddling with connections and the like we have
not seen that problem for a few weeks now.
Now the problem, and it is intermittent to some extent is as follows;
- as soon as micro switch is opened we get 6 flashes of the detination
light
- car has a horrible miss which seems to be the injection system
cutting out
- sometimes it will not idle, but just dies after running (length of
time varies)
- other times it will idle and run fine, no light even, then it just
goes for sh!t again (this is all just sitting on the shop floor, not
changing anything, just trying to get the pattern to repeat so we can
nail down the problem.
We have checked, tweaked and or replaced the following;
- all relevant relays, including tachometric
- throttle microswitch (gave wrong reading when open so we replaced it)
- throttle potentiometer – replaced and reset
- various temp sensors checked
- tried other MAF unit, no difference
- tried injection and ignition ECU's from well running car. While the
injection ECU from the bad car makes the good runner run like crap and
stall, the ECU from the good car has little effect in the bad (bad,
bad, very bad!) car.
- As per manual, relevant ECU wires checked for continuity or
resistance values – OK
Car has been hooked to scope and ignition side looks good. Injection
seems to be the problem but for the life of us we cannot figure out
what is causing it to act up. As I said, it can be idling and just
die. When trying to drive it while it is acting up, it is as if the
injection shuts down and then starts again – result is that of a
horrible miss. It might then just clear up for a little while and
then start all over again.
I am sure we have tried things that I have forgotten to mention but
this is getting long. Anyone have any ideas?
John
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Received on Wed Apr 19 10:09:43 2006
