190E 2.5 Starting Problems - HELP!

Nick 190E 2.5-16V

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My Merc 190E has been parked up for a couple of weeks without running, and last weekend I tried to start it up but the battery had died. After charging it up, and with a little jump starting help, I managed to get the engine turning over, but there was no sign of it firing up at all.

Does anyone have any idea as to what might be wrong, or at least where to start looking? It does seem quite odd that the non-starting has coincided with the battery going flat, so maybe that could offer some pointers. Generally I've not had any problems with starting, even when cold, so this issue seems to be a bit out of the blue :confused:

Alternatively, while the starting has not previously been a problem, the idle speed has been quite erratic, so I guess it could well be linked with that. Having looked into how the Bosch KE-Jet system works, it looks like there are numerous places to potentially investigate!!

Any help or advice would be much appreciated.

Thanks, Nick
 

television

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The battery should be good enough to spin it over quite fast without a booster, can you hear the fuel pump run for a few seconds when you turn the key
 

Cosworth

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Check he OVP relay there are two red fuses at the top. Fitted behind the battery cover.
 
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Nick 190E 2.5-16V

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Thanks for the advice.

The fuses in the top of the OVP relay both look fine. However, there is no indication of the fuel pump running when I turn the key, so I guess that could be part of the issue!

Any ideas what to look at next to get the fuel pump going?
 
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Nick 190E 2.5-16V

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Thinking about it a little more, whereabouts is the fuel pump situated? This issue has actually coincided with me changing the radio aerial. Is the wiring for the fuel pump is a similar location to the fuel pump? I'm wondering now if I've been an idiot and accidentally unplugged a wire to the fuel pump...
 

Cosworth

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fuel pump is under the car under a plastic cover. Your fuel pump relay may be faulty and thats located near the battery.
 

Cosworth

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part number starts with 002 , if you need a relay, let me know as my brother is breaking a cosworth 2.5 16v
 
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Nick 190E 2.5-16V

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Yeah if you've got one that would be great. How much for it? The part no. for the one in there is 002 545 72 05.

Also, if your brother's breaking another cossie, has he got the exhaust system for it, and if so how much would he want?

Thanks
 

Cosworth

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Yeah if you've got one that would be great. How much for it? The part no. for the one in there is 002 545 72 05.

Also, if your brother's breaking another cossie, has he got the exhaust system for it, and if so how much would he want?

Thanks

I will check the part number for you. is your car auto or manual?
Exhaust is no good
 

television

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Can he pull it and bridge pins 7 and 8 in the socket so that it runs all of the time
 
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Nick 190E 2.5-16V

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With type49's advice I've managed to bridge the pins leading to the fuel pump relay, and it's fired the fuel pump into life, so it seems that the relay is dead.

Cosworth, do you know if the relay in the Cossie your brother is breaking is any good at all?

Cheers
 

W.Roger Williams

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Hi,
Ive just bought my 3rd 190E 2.5,this time an auto because of ankle problem . Car has full service history over 160,000 miles. My problem since recent purchase is lack of power under accelleration.A local tech shop and a MB specialist dealer have spent many hours
to test and check everything. Nothing found, everything seems to check out Ok...but car feels strangled and uninspiring. Car runs evenly but getting to 100mph is hard work
 

Alex Crow

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hello roger, i must confess an interest here, it was i that checked it over

firstly i would say that you have described the symptoms very fairly, it idles smoothly, drives smoothly, starts well and shows no sign of misfiring whatsoever. it is as though it were a straight 190e 2.0!

i will comment on exactly what has been checked later, hopefully this bump will get a few thoughts from the other guys here.
 

meanie

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We can assume that compressions etc are ok then.
Could it be as simple as the inlet valves being carboned up on the backs. Used to take the edge off of the V8's & the 110 engines.
 
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