98s e 280 cutting out

[montyv6]

Can anyone help please, I've just had my 280 gas converted (latest system) but after only 10 miles the car cut out when parking and would not restart for approx 30 mins. took it back to lpg technician, again it cut out, who then disconnected the gas system, but after approx 10 miles car was parked up for 20 mins and would not restart for 15 mins. lpg tech is away for long weekend and I need to us the car so I would appreciate any help offered

 

[Myros]

did it do any of this before the conversion?

Just that it sounds a bit like the ovp relay could be a) at fault or b) doing its job properly.

 

[montyv6]

I have only had this car for 3 weeks but have had no problems prior to the conversion, but as the gas is now disconnected I am thinking maybe it is just a coincidence

 

[Myros]

monty, search on OVP

it will cost you about £50 quid new from MB. Maybe one of the breakers will do you a sale or return, but by the time you've done that, you might as well have had a new one and ruled it out.

 

[montyv6]

just managed to get lpg tech on phone and he has arranged to link the car up to a fault reader when he returns from stag party....will let you know of outcome

 

[42731]

Ovp

What is an OVP and where is it located?

 

[Myros]

Over Voltage Protection Relay

lives in various nooks and crannies, depending on your model. It protects the Engine Control Unit from surges in voltage, which would fry the computer and ground you. except when it works, it grounds you.
It's a tall silver relay shaped thing, with a transparent plastic top containing a fuse, of varying amperage dependent on your model.

 

[skydog]

gas converted e280

hi bud,just got back,and trying to do my bit to sort the problem by looking on mb forums and i have seen a couple of posts related to the ovp relay,we must find where it is and rule it out,(did u say the lpg tech lent u his v6 shogun while away and that does not start all the time,he must be cursed)ring u 2mo bud,jule

 

[skydog]

ovp relay

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#1 29-05-2005, 01:14 PM
wayne
Junior Member Join Date: May 2005

Imtermitent starting C220 elegance

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Hi i have a problem with my C220 starting, the problem seems to be the ECU.
The car will turn over but not egnite. If left for half an hour it will start (sometimes). The fuel pump is OK, can anybody help me with this fustrating problem.

Wayne

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#2 29-05-2005, 05:18 PM
Myros
Senior Member Join Date: Aug 2004

could be the OVP

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Wayne, this is a common fault with Mercs, and way cheaper to check and swap than an ECU. It's a tall silver relay, with a plastic cap containing a fuse, and it sits just ahead of the ecu in the engine bay. Costs about 45 quid form the dealers. takes five minutes to swap, and if it solves your problem, you are quids in. If not, it probably needed doing anyway as I believe they were nearly all faulty from new, dry joints and poor soldering. If you can't swap it yourself, MB should do it for the price of a smile, as there isn't much easier thing to do on a 202.
So that's the OVER VOLTAGE PROTECTION RELAY you are looking for when they open up on Tuesday.

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#3 31-05-2005, 03:23 PM
wayne
Junior Member Join Date: May 2005

probl;em sorted

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Many thanks, it was the OVP, will pass info on to all with same fault.

Wayne



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#4 31-05-2005, 03:55 PM
Myros
Senior Member Join Date: Aug 2004

no thanks necessary

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as it was MJTray who taught me that lesson. Glad you got it fixed. I believe the problem will hit every MB, regardless of engine type, which had the original faulty OVPs fitted. Scared my bro with that, as he thought diesels were exempt from mortal problems.
__________________
M,

If I get bored of being bored, what will I be?

 

[skydog]

c280 is this a v6 ? same engine as the e280 ?

c-class 280
Junior Member Join Date: Jan 2003
Location: heathrow airport area

intermittent starting probs ??

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Can anyone offer me advice on what to do with the cars problem.Having had the car in the local trusted garage,but not a merc dealer today ,he has stated to me that the car has a transponder problem and it has to go to a mercedes dealership to have fixed.Some times it can take three or four attempts to get the car to start,yet other times it starts on the first attempt,could you please advise ?
Many thanks , a virgin C-Class 280 owner with only 26k on the clock
Olen .

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#2 31-01-2003, 07:37 PM
dieselman
Senior Member Join Date: Feb 2001



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We need to know the age of the car to say what immobiliser it has.
Does it have a chrome ring around the ign. switch or does it have lights under the rear view mirror?

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#3 31-01-2003, 11:22 PM
c-class 280
Junior Member Join Date: Jan 2003
Location: heathrow airport area



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sorry for the lack of information.
The car is a November 1998 c- class 280 elegance.
It does not have lights under the mirror and if i remember rightly it does have a chrome ring around the ignition switch.
I say that cos i cannot park my car on the driveway,but in a garage 3 miles away as certain people cannot keep their hands off it.
the sensors for the alarm seem to be above the front seatbelt points near the front door pillars.Many thanks Olen.

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#4 01-02-2003, 07:52 PM
dieselman
Senior Member Join Date: Feb 2001



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OK, Now we know that you have the MB infrared immobiliser with electronic key, we need to know what exacly happens when you get in the car, insert the key and then turn it.

Does the electric steering lock operate when you insert the key, if so does the engine turn over when you turn to start?

Have you tried the spare key?

If the steering lock operates the key has been authenticated, the immobiliser is de-activated at ignition on.
If the car then fails to start it could be due to the gearbox neutral safety switch being faulty.

When this happens do you hear the steering lock when you remove and re-insert the key.

The system will hold codes for any incompatabilities between key, ignition lock and engine control.

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#5 01-02-2003, 10:07 PM
c-class 280
Junior Member Join Date: Jan 2003
Location: heathrow airport area

??

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Thankyou for giving me advice dieselman,I'm working all this weekend,my next day off is on Tuesday 4/2/03,i'll get over to the car and try the spate key. and i'll let you know.
When i put the ignition key in and turn it,i'ts like blackpool illuminations,
really it just clicks very much like the starter motor is faulty,turn off try again,sometimes she'll fire up sometimes not.
My problem is i'm used to fords and vauxhall and i'm still fasinated with the dashboard lighting up.
Really i'll post another message after i have been to the car on tuesday and let you know.Again thankyou for the advice so far,brilliant.

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#6 08-02-2003, 08:33 PM
c-class 280
Junior Member Join Date: Jan 2003
Location: heathrow airport area

ah reply

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well after visiting the car to try with the spare key to start it,exactly the same problem.Just as if the starter motor is going.Today Saturday 8/02.
She used all the juice in the battery and had to re-charge it before trying to start her again,which time she fired up first time.AH i thought it's the battery,off i went to the shops and after being parked up for only could of been 3 minutes,she was a bitch to start again.Any how i have booked it into a garage in Beaconfield,which has been recommended to by another mb owner to have a diagnostic check done,which will hopefully find the fault.So if anyone see's a metalic blue c-class 280 parked up on the m40 between jnc 1-3 , give me a wave.
Thanx for the advice so far diesel man,but i am fed up of funny looks every time i try to start the car.
I'll let you know how i go on.Olen

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#7 09-02-2003, 05:34 PM
dieselman
Senior Member Join Date: Feb 2001



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If you managed to flatten the battery it sounds like the starter is engaging and at least trying to start.

Does the engine turn over at normal speed or slowly when it wont start.

My money now goes on the starter or possibly some battery / wiring fault.

Any competant mechanic or auto electrician should be able to sort this out.

Only three things to know.

1/ Battery voltage before and during start.
2/ Is there full voltage to starter motor / solenoid.
3/ does engine turn at full speed.

It could be that the solenoid is siezing due to water damage then lack of use!

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#8 10-02-2003, 08:48 PM
c-class 280
Junior Member Join Date: Jan 2003
Location: heathrow airport area

t.b.c

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Hello dieselman,took the car along to a place called V.T.Wheels of Beaconfield,printed the information the you gave and give it them,thanx
The car had a diagnostic check and all shown well.I hd to leave the car their and endure a 2 hour journey back to await a phone call.It's now 20.45 on Monday night and still no call.i can only assume that it is not been sorted ,will let you know of the outcome.Olen

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#9 10-02-2003, 08:49 PM
Koolvin
Senior Member Join Date: Feb 2002




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Hey mate, where in Heathrow are you?

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#10 11-02-2003, 10:38 PM
Andy
Senior Member Join Date: May 2001
Location: West Midlands



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Hi Ya

Had a M class with similar problems. Took us a while to sort it. Turned out to be the TDC sensor. 3.2 V6


Hope this helps.

Regards

Andy @ www.mercedesservicing.com

 

[montyv6]

Thanks to all who responded to my problem, turned out to be the TDC sensor.This was tested by cooling down sensor(when car had cut out on reaching operating temp) with a bag of ice, the car would then start after approx. 5 mins as opposed to 30-40 mins if left