1999 mercedes kompressor convertible top problems

The rear SAM was out of a 2002 c230 Kompressor but I'm not sure if it had the exact options. We then found the fuel system problem with the rear SAM being fried. That was what we checked first after battery issues. The part that confused us was it had spark when the problems started. Sorry for not getting back sooner, the storm last week knocked out our internet. Also, there was a change right around MY2002 where the fuel pump was changed from a two-wire system to a three-wire, and that requires a different SAM. First of all, unless the car it was removed from had exactly the same options as yours, then it does need coding. If the CPS and fuel pump are both good, then unless all of your coils and plugs are bad, then the next thing to look at is the engine wiring harness and the ECU.ĮDIT: Oh, and as for replacing the rear SAM, there could be an issue there. A bad CPS will prevent both fuel and spark - when the ECU doesn't get a valid signal from the CPS indicating that the engine is rotating, then it will shut off both fuel and spark. It sounds like you have solved the fuel delivery problem, but maybe not spark. If the engine rotates and does not fire, then it's a problem with either fuel deliver or spark. Disconnecting the dead battery's negative lead, taking it out of circuit may help. Even if you try jumping it off or charging it, the battery could have dead cell causing it to act like a giant resistor and 'suck' all the jump-battery's extra power away. So does your engine rotate when you turn the key? If not, then I would look to the vehicle battery. Firing is when fuel is combusted by spark and the engine then continues to run after the start motor stops. Rotation is when the starter motor runs and the engine is rotating. I'm a bit confused by the terminology 'It cranks like it wants too but doesn't actually turn over' and 'There is no ticking or anything when we try to start.' Let's use the terms 'rotate' and 'fire'. There is no ticking or anything when we try to start. Tried jumping the battery even though it said it's giving full power. Rear SAM came out of same model so I didn't think it needed reset or whatever it's called. All the wires in the fuel system were checked and are powering what they need too (fuel sending unit etc) It had spark before replacing the rear SAM. We don't seem to be getting spark now but our tester isn't the most reliable. The fuel pump kicks on now, great fuel pressure at the rail. We replaced the Crankshaft position sensor, still didn't start.Ĭouldn't hear fuel pump so yanked that bad boy out and tested it, it worked.įound that the rear SAM was fried. It cranks like it wants too but doesn't actually turn over. I superviseĬar drove great, came home parked it went back out and it wouldn't start. Also, my boyfriend is the one working on the car since I'm 9 months pregnant. I'm new to this forum so I hope I posted in the right area.

1999 mercedes kompressor convertible top problems