1989 suzuki sidekick wont stay running

[Shaarc5]

1. Key on and idle map test good on both.
2. Map hoses are good, map filter not clogged, no a/t port on mine.
3. I redid all my TB gaskets. I made my own gasket, just like yours, since no parts stores had them. Still runs same.
4. I blocked brake booster hose as stated. Runs same

Thanks for the replys. Is it time for me to get a scope or is there more tests I can do?

[fixkick]

1. Key on and idle map test good on both.
2. Map hoses are good, map filter not clogged, no a/t port on mine.
3. I redid all my TB gaskets. I made my own gasket, just like yours, since no parts stores had them. Still runs same.
4. I blocked brake booster hose as stated. Runs same

Thanks for the replys. Is it time for me to get a scope or is there more tests I can do?

everything checks out
engine
spark good. distrib and coil.
ECU inputs good
must be bad ECU.

and are not easy to  find for sure working ones.
I can not think of any things not checked by you already.


the only hard problem seen by one guy here was rear CAM gear pressed on wrong, on the cam read end (new cam sans gear) or some one put the gear back on the distributor, end wrong.

what ended up is rotor is not timed right even though CMP (VR in this case) was timed right, and spark good at coil but not right at plugs. due to rotor alignment wrong.
super hard to find.  (in once case, the distrib base holding screw slow was at the end of its travel and spark timing was close but not fully correct) the only clue was this.... seen with eyes.

or real flaky VR. (spark generator inside distrib)