I had the same problem occur a few years ago. It turned out to be the fuel pump. Make sure you have your fuel pressure checked. It may be something as simple as a fuel filter plugged up or the crankshaft position sensor not working correctly. In any case it sounds like you have checked the ignition system thoroughly. Do the same with the fuel system.
slk 230 starting problem cranks
i have a 1996 slk 230 auto i bought it with the problem im having cheap enough so hopefully someone can shed some light so far i have:
changed the cps
changed the k40 relay
checked fuel
all is good the car turns on the key it fires up then stops before idling when this happens the car shuts the spark off
when i got the car it has the 3 pin plug down on the drivers foot well looks like an immobilizer key hole ive traced the wires and they go into the alarm the problem came about when then battery went flat on the car a year ago and had the problem since.
any ideas i have browsed the forum and the have seen similar problems but not the same.
the car unlocks and tries to start on the key
changed the cps
changed the k40 relay
checked fuel
all is good the car turns on the key it fires up then stops before idling when this happens the car shuts the spark off
when i got the car it has the 3 pin plug down on the drivers foot well looks like an immobilizer key hole ive traced the wires and they go into the alarm the problem came about when then battery went flat on the car a year ago and had the problem since.
any ideas i have browsed the forum and the have seen similar problems but not the same.
the car unlocks and tries to start on the key
1 - 2 of 13 Posts
I believe 54-61 psi at the fuel rail is correct. The pressure regulator is in the fuel filter and I have read that these are sometimes faulty depending on manufacturer. When the car is first started the fuel pump is signaled to run for a few seconds to get the pressure up on the fuel rail. Then with the engine started, the crank position sensor keeps the fuel pump on. I had my independent mechanic check my car when it wouldn't start and had a faulty fuel pump. This occurred when the car was hot.ive checked the filter so you would suggest tring the pressure whats the pressure at the rail supposed to be i have crimped the return off already that did not have an effect on the car and crank position has been checked and replaced thanks for reply i will som how get a gauge attached in at the moment its on the hold as i im just changing an engine in another car
Your car may have a different regulator set-up as mine is a 2004 model.
1 - 2 of 13 Posts
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