Pagoda SL Group

W113 Pagoda SL Group => Electrical and Instruments => Topic started by: Benz280 on October 08, 2022, 02:22:38

Title: Ignition Control Box
Post by: Benz280 on October 08, 2022, 02:22:38

Having an intermittent issue where engine will stall at around 185 degrees.
Wont restart until engine cools a bit. Some research is pointing me to the the electronic ignition box ( 71 280sl ) .
Has anyone experienced any issues at this level ?       

Title: Re: Ignition Control Box
Post by: Jonny B on October 08, 2022, 16:00:58

Take a look at the technical manual - Electrical system. Click on that and then look for Ignition System - click that and scroll down to "transistorignition" and read through how that works and what to look for.  This should give you some idea about how this is set up.

I found this thread that may be of interest
https://www.sl113.org/forums/index.php?topic=10721.msg71193#msg71193

You might also want to take a look at the Emission Control System - click on that and it takes you to a description and info. It can also impact running.

Also try the search function . I found the thread above on the first page of search hits. I used "transistor ignition -petronix" without the quote marks, but not the "-" in front of petronix. In a search if you use that minus sign, the search will exclude that term. It gave me three pages of hits.

Title: Re: Ignition Control Box
Post by: Benz280 on October 14, 2022, 17:38:05

Thanks Jonny B,
have gone through linkage and WRD and cant help but feel its an electrical ignition issue given that its as if its getting no spark.
Came across a NOS ignition Box, coil and ballast lets see how that goes.   

Title: Re: Ignition Control Box
Post by: rwmastel on October 14, 2022, 23:06:24

Quote from: Benz280 on October 14, 2022, 17:38:05

Thanks Jonny B,
have gone through linkage and WRD and cant help but feel its an electrical ignition issue given that its as if its getting no spark. 

Yes, Jonny's reply was all about helping with ignition.  Did you follow his recommendations?

Quote from: Benz280 on October 14, 2022, 17:38:05

Thanks Jonny B,
Came across a NOS ignition Box, coil and ballast lets see how that goes.   

Did troubleshooting and diagnostics lead you to trying a different ignition box, or are you "throwing parts at it"?  Hoping you're going about it smart to save yourself time, money, frustration.

Title: Re: Ignition Control Box
Post by: Jonny B on October 15, 2022, 15:43:34

Be sure to check the wiring for grounding items. Some of the small connections can be problematic. 

Also check to see if a separate wire was added to the electronic control box to allow for easier ability to hook up a dwell meter. If there is a wire and there is a small bare spot grounding out, the car will not start - ask me how I know that one.. ::) ::)