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Old 06-08-2003, 10:51 PM
Registered User
Join Date: Nov 2000
Location: Ontario, Canada
Posts: 463
How long do OVP's last?

I ask because my car stalled after I filled it up at the gas station. It stalled as I came to a stop and again at the next intersection when stopped.

The car has 177,987 kms on it. M103 motor.

The alternator was replaced 25,000 kms ago

The plugs and wires are 30,000 kms old.

The coil and distributor are original and look amazingly new...

I am thinking OVP. The car has a very poor idle and will stall if not put into neutral at intersection.

On a side note, will my water pump last longer if coolant is always kept fresh? It is also still original.

Please offer anything you can.

With much thanks,

Mike McKinney
190E 2.6 - 244 000 km
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Old 06-09-2003, 12:52 PM
Registered User
Join Date: Dec 2001
Posts: 565

I'm not able to answer your question, but mine is original - 12 yrs. old - 102,000 miles and still purring away.

I really doubt that there's a clear answer to this question. How long does anything electrical last?

My 2 cents.
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Old 06-09-2003, 03:33 PM
Registered User
Join Date: Apr 2002
Location: Surrey, Uk
Posts: 254
OVP failure almost always brings the ABS light up as well. Some OVPs were prone to early failure but you can repair them by opening up and resoldering all the joints inside.
Mick J
'08 Chrysler 300CRD (MB OM 642 engine)
'95 E220 estate
'89 230TE (R.I.P.)
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Old 06-09-2003, 03:36 PM
mike690003's Avatar
Registered User
Join Date: Apr 2003
Location: Miami,FL
Posts: 807
I lost my OVP when I gave someone a jumpstart. Lesson learned: Never give anyone a jumpstart unless they plan on replacing your OVP.
1987 mercedes 300E
1995 e320 conversion(hated the 300e grill)
HID/Xenon (D2S)
Keyless Entry
Monochromatic Paint (Custom Blue)
Smoked Tails
Flat Badged (front)
Debadged (rear)
custom "carbon fiber" console
18 inch HP EVO rims
Sold! Now I drive a Monte Carlo SS

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Old 06-10-2003, 09:54 AM
Registered User
Join Date: Nov 2000
Location: Ontario, Canada
Posts: 463

My ABS light does not stay on.

Any other ideas about this stalling problem?

The car will start up fine after it just stalled.

Putting the gear selector in neutral will keep the car idling.

Any ideas?
190E 2.6 - 244 000 km
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Old 06-10-2003, 10:18 AM
I told you so!
Join Date: Jun 2002
Location: Motor City, MI
Posts: 2,741
Try cleaning the throttle body bore where it meets the butterfly valve.
95 E320 Cabriolet, 131K
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Old 06-12-2003, 04:03 PM
Registered User
Join Date: Nov 2000
Location: Ontario, Canada
Posts: 463
The throttle body plate at the butterfly valve is exceptionally clean. In Ontario, we have drive clean emissions testing and the car performed exceptionally well there as well. Low NOX.

I believe this stalling is now related to fuel pressure or supply more and more.

What do you think I should have done?

A. Go with a diagnostic service?

B. Go ahead and replace fuel pump relay?

I am thinking fuel pump relay more and more. Car hums when key is on... Car starts fine and will actually idle like silk. Coming to a stop causes it to stall.

Fuel pump relay or throttle microswitch?

Please advise guys.

Thank you

Mike McKinney
190E 2.6 - 244 000 km
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