If the “detailer” used silicone based products on or around the engine compartment, they borked your MAF. If silicone gets on the sensing parts of the MAF, it kills them. This is well known and documented.
Lift the hood and see if you’ve got a shiny engine. Dan > On Sep 9, 2016, at 10:50 PM, Karl Wittnebel via Mercedes > <mercedes@okiebenz.com> wrote: > > So I bought that low miles 1994 e420 from Jeremy and Co up in SF. Figured I > need the car and they said it drove well and was in good shape, and that's > about all I need in a 420. Paid and they sent the car. > > It arrived yesterday. Started, backed off trailer fine. It was about 8am so > I hopped in it and attempted to drive to work. Unfortunately, it would rev > to about 1500rpm and stall, and repeat the sequence about every second or > so. It idles as smooth as silk, just won't throttle up. No lights on the > dash. Never got out of first gear or above 20mph. Not good news! Called tow > truck, then Lyft. > > Herbert the German mechanic says the fault code is either the throttle body > actuator or the computer that controls it. He says the throttle body is not > opening properly in response to pedal input. He asks if there has ever been > water on the engine. I say not to my knowledge. He is still sorting out > what exactly is failing. Either one is a spendy item apparently; 1500 for > the actuator and lord knows if a computer would even be available. Herbert > himself isn't cheap either, but he knows mercedes. > > So I got Jeremy on the phone and relayed this info. He apparently drove it > for several days and to the smog place before listing it, and it was > completely fine including the dyno test at smog. He says they did detail > the engine after that though. > > So here is the question: what stuff typically gets messed up when you wash > an e420 motor that can cause this sort of thing? I am still hoping for an > outside chance of something simple, and I figured I would see if there is > any collective wisdom on this topic. > > Thanks, > Karl > _______________________________________ > http://www.okiebenz.com > > To search list archives http://www.okiebenz.com/archive/ > > To Unsubscribe or change delivery options go to: > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > > _______________________________________ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
