p38 diesel glow plug relay

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vtrman

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can anyone help i need to find the relay for the glow plugs on my p38 as ive tested the power to the live part of the glow plug and no power been told it might be the relay thanks richard
 
It's in the ECU box at the rear of the battery along with the fuse. There are other reasons for the plugs not working such as the engine temperature sensor. If the fuse is blown, you may have a duff glowplug.
 
ok thanks ive changed all glow plugs with ngk ones sometimes it starts first time then sometimes it takes ages loads of smoke from rear when it dose start
 
vtrman said:
ok thanks ive changed all glow plugs with ngk ones sometimes it starts first time then sometimes it takes ages loads of smoke from rear when it dose start
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Take out the relay and check for burning on the connections. Make sure they are sound. Sounds like one or more glows are not working.
 
ive changed all glow plugs for new ones on saturday ive come to start it tonight it nearly started but it started to crank over with no joy :mad:
 
vtrman said:
ive changed all glow plugs for new ones on saturday ive come to start it tonight it nearly started but it started to crank over with no joy :mad:
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Do you have power to the glow plugs when glow lamp is on? If not check the connections on the connector that the relay plugs into for burned pins. Check the 80 amp fuse. If you have power to the plugs the plugs have gone down.
 
wammers said:
Do you have power to the glow plugs when glow lamp is on? If not check the connections on the connector that the relay plugs into for burned pins. Check the 80 amp fuse. If you have power to the plugs the plugs have gone down.
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no power to the glow plugs but im going to check the main fuse 80amp
 
ok checked fuse it is all ok even the relay clicks when turn ignition on and wait till it clicks even checked all fuses in cluding main ones on the left of fuses in mai box could it be the engin temp sender the blue one thanks
 
vtrman said:
ok checked fuse it is all ok even the relay clicks when turn ignition on and wait till it clicks even checked all fuses in cluding main ones on the left of fuses in mai box could it be the engin temp sender the blue one thanks
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If the fuse is ok and the relay clicks and the glow lamp comes on but there is no power to glow plugs the relay has to be faulty. If the temp sensor was faulty the glow lamp would not light and the relay would not click.
 
right ive check all glow plugs and they are working fine relay works when i first come to start car it turns over seems to fire but continues to turn over until it starts any ideas as what it could be many thanks Richard ps i have had the becem repaired due to a blown track could this contribute to this not starting ????????
 
update after checking all glow plugs which are working fine relay too it seems to be like lack of fuel on first start up ive checked for leaks found nothing is there any other reason for this because after she starts runs well turn it off then start her up again she fires first time and run well thanks for all your support
 
vtrman said:
update after checking all glow plugs which are working fine relay too it seems to be like lack of fuel on first start up ive checked for leaks found nothing is there any other reason for this because after she starts runs well turn it off then start her up again she fires first time and run well thanks for all your support
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Check the lift pump for function.
 
in-tank pump ok ile check that also bleed off pipes are they the ones from the injectors also what is foobared thanks ps if i switch ignition on should fuel bollock out the fuel line if taken from the filter if not dose that mean fuel pump knackered thanks for all your info and help
 
Last edited:
vtrman said:
in-tank pump ok ile check that also bleed off pipes are they the ones from the injectors also what is foobared thanks ps if i switch ignition on should fuel bollock out the fuel line if taken from the filter if not dose that mean fuel pump knackered thanks for all your info and help
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Non functional, broken, useless, knackered. Fuel will only come out of pipe when you switch ignition on whilst glow lamps are lit. Look in the "How to" section for a guide how to check the lift pump for function and efficiency.
 
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