View Single Post
  #43  
Old 12-01-2010, 11:30 AM
vstech's Avatar
vstech vstech is offline
DD MOD, HVAC,MCP,Mac,GMAC
 
Join Date: Mar 2006
Location: Mount Holly, NC
Posts: 27,018
Quote:
Originally Posted by hey_allen View Post
Because the glow plug light being on is controlled in part by a circuit that compares the current draw on a few of the glow plug pins in the relay.
Certain combinations can still light the lamp, while others won't.

If I remember what I read a while back, cylinder 1 is compared to the rest, but I don't know the actual ins and outs beyond that.
in the parallel circuit, at the relay, I think all 5/6 terminals are connected together. I don't think the relay can distinguish between 1 or the other4/5 I certainly do not have ANY working knowledge of the relay, just what I have read here on the forum for the last 8 years, and my experience with the failures me and my customers have encountered.
currently, all 5 of my plugs are heating up, and the car is starting smoothly, but the indicator light is not lighting up. it could be a bulb, it could be a fault with the relay. I'll swap a few relays in and out and see if it makes any difference. I will also pull the cluster and inspect the bulb/swap if it's bad.
__________________
John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 560SL convertible
1987 190D 2.5-5SPEED!!!

1987 300TD
2005 Dodge Sprinter 2500 158"WB
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!
Reply With Quote