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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
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Thanks autozen, sorry to not having been able to come earlier.
This is exactly the kind of experience that helps everyone to find out where some sneaky malfunctionnings of our cars come from, without replacing blindly expensive modules.
On my car (a fantastic car by the way) 260E, 1988, 400 000 km, there are some erratic loss of power like stalling from fuel starvation or something else for which I have not yet been able to identify the origine.
One these days I will drive with the computer disconnected, to see whether the CIS and its periferals are creating the lack of power.
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Keep us posted especially if your problem is solved
Present cars:
My car: E-class 420CDI, 2008, W211, V8, 180 000km
Wife's one: C-class 220CDI Sport Coupé, Euro, 2002, W203. 345 000km
Son's one: GLK class, 220CDI, 2009, W204
Sold: E-class 260E, 1988, W124, Wonderfull car sold after 489 000 kilometres of reliable services (engine M103, clutch, brake system and 5 speed manual gear box all original).
Sold: E-class, 320CDI, W210, 2000, 225 000km
Last edited by cc260E; 02-26-2005 at 09:43 AM.
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