permutation-jim
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- Feb 23, 2008
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Have a very irritating problem with my used white saloon automatic.
Dash occasionally turns into a light display (nonsensical flashing), while the tach and speedo start jumping around or just drop to zero. In extreme cases, the engine performance suffers, repeatedly jerking with a loss of power. Sometimes it just goes away, sometimes it continues (no discernible pattern... rain, sunny, night, day, etc.).
I have uploaded a 17 second YouTube video, showing the symptoms, here.
As I said, it's intermittent so I'm at a loss to diagnose.
It's a post-facelift w202 C250 TD (turbo diesel) Classic trim saloon (white) with automatic transmission. I don't think this model features a discrete OVP (my first guess). The engine compartment fuse box (driver's side) is closed, but lacks a gasket around it. No visible water in the box, but will replace the gasket once I find one.
Bought used with multiple owners, so no idea on what previous folks may have done to it. Runs great when not exhibiting this problem, but it's often and bad enough for me not to hold out hope for the future of this otherwise great car.
All help greatly appreciated! I'm trying a lot of folks to get to the bottom of this, so if I find the answer elsewhere, I'll post it here.
-Jim
Dash occasionally turns into a light display (nonsensical flashing), while the tach and speedo start jumping around or just drop to zero. In extreme cases, the engine performance suffers, repeatedly jerking with a loss of power. Sometimes it just goes away, sometimes it continues (no discernible pattern... rain, sunny, night, day, etc.).
I have uploaded a 17 second YouTube video, showing the symptoms, here.
As I said, it's intermittent so I'm at a loss to diagnose.
It's a post-facelift w202 C250 TD (turbo diesel) Classic trim saloon (white) with automatic transmission. I don't think this model features a discrete OVP (my first guess). The engine compartment fuse box (driver's side) is closed, but lacks a gasket around it. No visible water in the box, but will replace the gasket once I find one.
Bought used with multiple owners, so no idea on what previous folks may have done to it. Runs great when not exhibiting this problem, but it's often and bad enough for me not to hold out hope for the future of this otherwise great car.
All help greatly appreciated! I'm trying a lot of folks to get to the bottom of this, so if I find the answer elsewhere, I'll post it here.
-Jim