PeachParts Mercedes-Benz Forum - View Single Post - 89 190e 2.6 stalled

cc260E · #29 03-31-2005, 12:23 PM

Quote:

Originally Posted by autozen

CC260E,
That is correct. MB bought the Constant Injection System from Bosch in 1976. It was the first version and worked on air sensor plate position to adjust fuel amount to match air flow. There was a warmup regulator that lowered control pressure for a cold engine and acted like a choke. To increase power, increase fuel mileage, and reduce emissions engineers developed the oxygen sensor. This sensor that is in every modern car continually monitors oxygen in the exhaust and through the CIS computer trims the fuel quantity. You can remove the computer and you will have the basic 1976 system. The car won't run very well cold and power and mileage will suffer, but you can drive the car. The same goes for ABS. While working on the electronics on my mother's 89 190E 2.6, the ABS computer kept getting in my way, so I took it out and put it in the trunk. The ABS light stayed on and ABS was not available, but the brakes worked fine.

Peter

Hello Peter,
Thanks for your indication about functionninng of engine as indicated in this thread.

I tried it on a 40km drive and it worked perfectly. Except for starting at cold temperature (expected).

I have another question.
I changed the adjustement of the stop screw of the Throttle butterfly because I wanted to clean the throttle body.
I have never been able to find in any book or any forum the adjustment procedure of the stop screw to bring it back to nominal position.
I did it as good as possible but I believe it is not good enough (very difficult and I assume because of the high reactions from ICS connected module).

Without the ICS module connected, I found that the idle is a bit too high (900/mn) but very stable and regular.

I am wondering whether adjusting the stop screw of the throttle butterfly (and consequently the idle rev) without the ICS module connected would be the right adjustment way to do it.

Could you give advice on my finding?

In advance many thanks for your help

cc260E