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Registered
1989 w126 300se
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14 Posts
Discussion Starter #1
Hi all, I have a 89 300se. Going to replace vacuum modulator but am looking for the appropriate hoses and fitting for the line that goes to engine. Also, the car surges and sometimes dies when in reverse. Also, sometimes, the car doesnt crank at all and just get a check engine light. I open and close the hood and it will start right up with no light. CPS or nss? Maybe? Ground?
 

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SuperModerator
1986/1990 W126
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13,378 Posts
I have a slight surge in my 420se in reverse only. It never dies though. I suspect a vacuum leak but can't find one. Modulator is new. So you may need to examine all the joints and hoses you can find.

What do you mean when you say cranking? Normally that would be turning it over with the starter motor only, the engine not yet started but only turning with the starter motor.
So to clarify, when it won't crank are you meaning you turn the key and no starter motor engages?
 

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Registered
1989 w126 300se
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14 Posts
Discussion Starter #3
It doesnt crank, like no noise or anything when I turn they key, just dash lights.
 
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