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Car: 91 hatch with a Z6 and OBD 1 swapped in, new distributer, fuel filter, and O2 sensor,cam and ignition timing was recently set, no CEL's. Also has O2 meter installed and fuel pump controlled by a toggle switch (long story). Problem: When I first start it and drive it around town, it's just...

I have a 91 EF with a D16Z6 and OBD1 swap, and so far all the issues I've had getting it to run right have been resolved, except for an odd warm up problem. With the engine cold and the ECU just reset, it'll throw a code 1 (O2 sensor), and have a rough idle. It'll start to idle around 2k, then...

Can anyone confirm the existance of some sort of roll over or front end collision switch that would cut power to the fuel pump? A few people around here have tossed the idea around as being the culprit for no fuel (more detail on that in my other thread), but I have never heard of such a thing...

I just got done doing the wiring for an OBD0 to OBD1 conversion on my EF civic, and (surprise surprise) it doesn't start. I'm too tired tonight to keep going at it, but I did manage to find that I don't have any spark, I do have fuel, and the only trouble codes I'm getting is for my O2 sensor...

From what I can tell, a TD-41U is for an obd1 non-vtec, and a TD-42U is for a obd1 vtec d series.....can anyone verify if these two might be interchangable, or point out what exactly the difference is? Thanks in advance.