Hi, I am a new owner of an old 1992 940 4 cyl non turbo ( vin numbers 6 and 7 are 88 ) The Chilton's manual prints in one page that the fuel system is a LH 2.4 and in the next page it prints that it is a Regina.
Check engine light comes on
I read the code the test cable plugged in number 6 and I get 1-4-3
The only place that I find this code is in the motronic code description and it means "front knock sensor signal absent or faulty" I can find only one knock sensor in this engine.
I read the code the test cable plugged in number 2 and I get:
3-1-1 spedometer signal missing, also the speedometer and the cruise control were not working , replaced the instrument panel and now the speedometer and the cruise control work but I still get the same error
any suggestions?
2-3-2 self adjusting oxigen sensor not working , what do I do here?
1-2-2 air temperature sensor, where is that thing?
Please, any and all the help is appreciated
Gilbert

Where is the distributor located? If it is block mounted its regina, if not its lh 2.4

it is located between the head and the firewall.

Ok it's official: I am getting krazy with this car: it does not use a Air Mass Meter! it uses a Air Temperature Sensor instead, it is installed where the AMM used to be in the older models, It has only 2 wires connected to it, and in the manual it shows that only the regina uses it!

I tested the air sensor and it seems to work fine, still have to check the cables.
Somewhere I read that leaky injectors and bad fuel regulator can set the code 232, I have another engine and I will swap those to try
I had replaced the speedometer and the computer gets the signal from the same place that the cruise control , and the CC is working so I have to check the cables also.
Can a computer be bad?
It is missing speedometer, knock sensor, Air Temp meter, all those signals, what are the chances of all those cables being bad instead the computer.
Thanks for all the suggestions.
Gilbert

Replacing the speedo did fix the 311 code, I swapped the injectors with some blue ones ( I think they are for turbo ) and the engine was not working properly and it gave me an oxigen sensor error. In the swap I notice that the ground cable that goes from the firewall to the manifold was broken, so I put the original injectors back and fixed the ground and all the fuel injection errors are gone.
for the knock sensor I found that the cable was broken near the connector, so I fixed the cable but I still have that error.
Will any other knock sensor from another b230f or turbo work ?