86 420sec running rough
12-09-2009, 09:47 PM
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'86 Benz W126 420 Sec
86 420sec running rough
Hi Guys
420sec 175k Miles run on premium unleaded (98-95ron)
Latetly she has been running a little rough, as it gets warm the oil pressure needle bounces between 0 and 1, it has a shake at idle like its abit low (sits at 600-700rpm).
Yesterday while i was coming home from buying oil/filter/oil flush for her, she died while cruising in top gear at about 1500-2000rpm twice and wouldnt restart straight away, had to give it a couple of minutes.
any ideals?
cheers
Nik
420sec 175k Miles run on premium unleaded (98-95ron)
Latetly she has been running a little rough, as it gets warm the oil pressure needle bounces between 0 and 1, it has a shake at idle like its abit low (sits at 600-700rpm).
Yesterday while i was coming home from buying oil/filter/oil flush for her, she died while cruising in top gear at about 1500-2000rpm twice and wouldnt restart straight away, had to give it a couple of minutes.
any ideals?
cheers
Nik
12-19-2009, 07:43 PM
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The control loop on these guys is fairly dependent on all the pieces doing their job.
When cold, they run open loop. After they warm up then the computer controls the mixture. There is a way to open up the temperature sensor and then the computer will think it is cold. I did this while checking my car out, I thought the sensor was on the passenger side of the car down by the oil filter and it was as simple as pulling the connector on it.
When cold, they run open loop. After they warm up then the computer controls the mixture. There is a way to open up the temperature sensor and then the computer will think it is cold. I did this while checking my car out, I thought the sensor was on the passenger side of the car down by the oil filter and it was as simple as pulling the connector on it.
