about 1-2 weeks ago my check engine came on for the first time and it jerked forward once, then it continued to drive fine, this happened 3 times over a 15 minute drive. a friend said this could have been a hickup and i thought it was until last night.
last night, my check engine came on again, and i couldnt boost at all, the more i stepped on the peddle the more it felt like i was towing 100,000 lbs.
i turned my car off and parked for about an hour, got back in, and the car ran just fine.
so i would love for some suggestions on what this could be. (1991 turbo swap)

 

Check what code was logged.

And sounds a lot like limp mode. So my first guess is you'll pull some OMP codes.

Let us know.

 

That. Since you say swap and check engine light I assume you're using a n370 ecu.

 

sorry i havent responded yet, the holidays bring unpleasant business to my life to where i cant afford a obd1 scan at the moment..
on the other hand, since the incident, nothing has happened, possibly a hick-up?

 

There should be a check connector plug near the leading coil that has but one wire. Ground this wire and w/key to on the CEL will provide you with any error codes.

 

ill get to this on my days off and see what comes up, thank you satch

 

Check wires on crankshaft position senser. I had a chafed wire and the engine started hiccuping the more gas I gave It the worse it got. Eventually the wire broke and engine would not turn over. That's when I found the problem.

 

You don't need and cannot get an OBD1 scan. Here is a link to tell you how to pull your own codes:

http://www.1300cc.com/howto/how2/codes.html

If you drive the car with any OMP codes(MOP), then you will burn up your ECU.
Ask me how I know.

https://www.rx7club.com/2nd-generation-specific-1986-1992-17/s5-mop-ecu-failure-diagnosis-710938/

Good luck.

-Jack