Yes, it is TBI. I bought a rebuild kit and did that some years back. I’ve often wondered if I did everything just right.

As for computer, it’s got something because you can do a stomp test to pull codes whenever you get a test engine light warning. There is a multi port little jack receptacle under the dash, you hotwire the top two on the right and then you get flashing of the check engine light, I’m sure most all of you have seen it, will send out a code number in that fashion.

It’s a tough one on the fuel pump, the old “if it ain’t broke don’t fix it“ principle. OTOH, I’m thinking 175K, it’s 33 years old, I know the fuel pumps in my Beemers would have failed by now. I still haven’t put in the fuel filter, I need to do that soon. Performance has been much improved, crisis mode is over, but something is not quite right.

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Te futueo et caballum tuum

1986 300SDL, 362K
1984 300D, 138K