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  1. O

    Which fluid for my PAS?

    My 1984 500sec will need a new steering box soon as the PAS has sprung a leak. Its down to min now. Need to top up but can't remember which fluid.... handbook in other location. I have some Comma AQF & AQM to hand will either of these do or should I skip to Halfords this afternoon? Thanks...
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    500SEC fp relay - again?

    Thanks Graeme. Suggestion has been made that it might be a faulty OVP relay causing a recurring fault affecting the FPR and therefore the pressurisation of the fuel injection? Might that explain the symptom of behaving like it is suffering from fuel starvation on start up? (it has fuel btw...
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    500SEC fp relay - again?

    On starting, the car fired up but refused to 'catch' - almost like fuel starvation. After about 5 minutes I tried again and all was ok. Drove to my destination no problem - the car has just passed the MoT in May with flying colours. After an hour or so I returned to the car to head home. Same...
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    126 woes

    Hi folks. My 1984 SEC is up for it's test on May 14 but I have hit on a snag (or two). I may have mentioned on a previous post that there is a tremendous fuel leak from the area of the fuel pump that has rendered the car immobile. Anyhow its been recovered to the workshop. Problem 1. Fuel...
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    Sensor problem?

    Just to report back - I installed a new OVP and the ABS light is now extinguished- hoorah! The car has been running very poorly even though it now starts - problem was a defective plug (No.3). Now back to its normal.. 'running well at speed but less than perfect idle'.. self. Think I shall...
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    Sensor problem?

    Got its whereabouts - behind battery, behind panel. Just opted for a new unit, (double fuse), today from local MB man. Cost me £60 + vat. Not too bad I thought since Mercman quoted £15 + £20 postage + vat obviously for a used example. I thought the postage a bit excessive. I shall install...
  7. O

    Sensor problem?

    Whereabouts on the car is the OVP relay? Sorry for my lack of knowledge :o Regards, Mark S
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    Sensor problem?

    Appreciate advice on 'tweaking' was in two minds about touching it at all. Fuel filter not changed on my watch ie 2/3 years unknown before this. Are you also suggesting I replace the OVP relay? Thanks, Mark S.
  9. O

    Sensor problem?

    Thanks to all for your helpful advice. The sensor was for the air cleaner housing after all. Now for an update. Car was still refusing to start as of today sparking ok and plugs a nice rich brown colour but they seemed a little too dry for the amount of cranking I had been doing with the...
  10. O

    Sensor problem?

    Unsure - will check over weekend. Thanks :)
  11. O

    Sensor problem?

    Had a little problem with my 1991 190E 2.0 auto. The fan wasn't working correctly and the car overheated resulting in a destroyed thermostat housing cover and coolant everywhere. Replaced housing cover and thermostat and re-filled the cooling system. Now.. the car has been sitting a while and...
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    Starting woes

    Just gone and had another look. Found a square component swathed in insulating tape with a spade type connector and a the lead disconnected from it. Connected this up and....problem solved! Don't know what I have done though. I assume this is part of the after market alarm/central locking fit...
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    Starting woes

    My 1991 190e 2.0 auto has been sitting idle a while. During this time the battery has gone flat but the car would start with the assistance of jump leads. Fine - new battery required. Replaced the battery today but when I turn the key, all I get is a 'hissing' type noise and nothing from the...
  14. O

    The joy of SECS -again

    Thanks John - A sensible idea - it would be ludicrous to do anything elese. :) Regards, Mark S.
  15. O

    The joy of SECS -again

    Hi Folks, Same old story - my 1984 500sec wouldn't start after standing for outside for 2 months prior to Christmas -one new set of heavy duty jump leads and my spare battery later - off we go on New Years Day no problem. Car won't start again the following week - guess I need yet another new...
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    500 sec starting woes

    Cannot get my 1984 500sec to start this morning (or last week for that matter). Car has been sitting for about a month - it had its last run of about 80 miles then with no problems. When I try to start the car all I get is a rapid and noisy clicking noise like a loud typrwriter that has gone...
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    Coolant woes

    Thanks guys - I'll sort it out next weekend. Interesting point on the type of fan Graeme. When discussing the fan problem elsewhere, I was told that, according to the VIN number of my car, it had a viscous coupled fan fitted. :confused: Must double check. I presume that if it is an EM...
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    Coolant woes

    I drained, descaled and attempted to refill the coolant system of my 1991 2.0 190E auto today. I must have caused an airlock. On refilling I can only get it to swallow approx. 5L of the necessary 8.5L of coolant, (a 50/50 mix). The low coolant level light is illuminated. The car runs ok...
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    500sec engine cutting out

    Hi Folks, Update - car started first time last Sunday after sitting for a week. Drove for about 6 miles then returned to base - no problems. Very frustrating as I now don't have the confidence to take it for a longer run ... just in case it stalls again. I'll try it again this Sunday after...
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    500sec engine cutting out

    Thanks guys. Here is an update on the problem. Happened again last night shortly after starting off. Car just conked out again. I lifted the bonnet and did my relay jiggling again - no joy this time I tried this about three times but no response. Then after sitting for about 15mins - bang...
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