Quote:
Originally Posted by deanyel
A few years ago tour Mercedes Enthusiast magazine referred to the CIS 104s as "cobbed together", a rush job to get 4 valves per cylinder on the market in response to Japanese offerings. I had one in a 1990 300SL that needed a full valve job at 45k miles. It still has all the CIS problems - enigmatic fuel delivery system, with very expensive components, primitive diagnostics, inferior fuel economy - plus anemic low end power (worse than 103). A wiring harness is utterly insignificant by comparison - especially considering what you get in low end driveability. This wiring harness obsession is kind of weird - not that expensive and they've almost all been replaced already.
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I can only assume you had a duffer. Mine has good fuel economy and, at 370K Kms is on the original wiring loom, motor, gearbox, etc. The only work on the engine was the head gasket at about 170 K Kms. All the costly CIS parts and electronic controllers are original and in exceptional condition. Oil pressure is as new and the only issue is a cold start clatter for about 3 seconds as the hydraulic tappets pump up. It starts first time every time whether at -20C or +35C.
And the mechanical MAF is original which is more than can be said for most hot-wire MAFs.
As for low end torque, agreed, the engine is a screamer so I make it scream.
I'm thoroughly satisfied.
RayH