Firstfives.org

PM'd

Much thanks I'll look for it in the morning

Anyone know the procedure for turning this off through the diagnostic connection. 1981 528I Owners manual states that this light will come on at 30K mile intervals indicating the need for a new cat. and must be reset. The blue binder speaks to a reset button on the service box but I'll be damned if ...

Got it...Bad splice. Leads to temp/time switch had been reversed when installing new connecter during previous ownership

Spent a little time this afternoon useing the Bently as a guide. The problem is no path to ground through the temp/time switch. I'm getting approx. 11 volts on both sides of the connector when cranking. Any ideas out there?

Nothing there... I am now firing it off the battery through a dash mounted switch. Now I can determine time and temp during which to use it. This will work untill I locate/purchase a known good ECU

Thanks
Jerry

Can't get it to fire Replaced valve, thermo time switch and combo relay.
Also cleaned every connection that I know to be associated with this criter.
Would it be the ECU?

Thanks
Jerry

swatterssr wrote:

JWMason wrote:

Mike W. wrote:There isn't a dedicated one, it works off the combo relay, one of several functions in it.

As I suspected Thanks

So, where is this combo relay?

Sherman
On my car it is located on the drivers side right behind the coolant
reservoir

Mike W. wrote:There isn't a dedicated one, it works off the combo relay, one of several functions in it.

As I suspected Thanks

I have a 1981 528I. Can someone tell me where the cold start relay is located? Thanks in advance!

Jerry