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Whats me relay relaying ?
Posted: 21 Aug 2006, 23:41
by OB1
I 've got a 1.9 water cooled petrol dg engine ,A reg there is a relay in the black box full of wires on the n/s in the engine bay -do any of you electriky boys know what it controls
OB1
Posted: 22 Aug 2006, 00:19
by irish.david
If you mean the black box of wires thats screwed to the front left of the engine bay (looking back to front) then I believe the relay in question is connected to the inlet air manifold heater. It's located under the resonating chamber on the inlet manifold and is switched on the temperature of the coolant.
Dave
Posted: 22 Aug 2006, 10:42
by OB1
irish.david wrote:If you mean the black box of wires thats screwed to the front left of the engine bay (looking back to front) then I believe the relay in question is connected to the inlet air manifold heater. It's located under the resonating chamber on the inlet manifold and is switched on the temperature of the coolant.
Dave
Many thanks -that shouldnt stop the bus idling then -must be something else
many thanks
OB1
Posted: 22 Aug 2006, 11:02
by HarryMann
Might make it idle a bit rougher though
Posted: 22 Aug 2006, 20:18
by irish.david
If the heater's partially shorted then the extra drag on the alternator might lower the idle speed of the bus. Pretty simple to check. Just pull the relay and if the bus idles better then you've found the culprit.....
Dave
Posted: 23 Aug 2006, 20:51
by OB1
irish.david wrote:If the heater's partially shorted then the extra drag on the alternator might lower the idle speed of the bus. Pretty simple to check. Just pull the relay and if the bus idles better then you've found the culprit.....
Dave
I'll give it a try
OB1
Posted: 23 Aug 2006, 21:18
by HarryMann
Just pull the relay and if the bus idles better then you've found the culprit.....
Can't get simpler than that
