+- 306oc - Peugeot 306 Owners Club & Forum (https://www.306oc.co.uk/forum)
+-- Forum: Engines (https://www.306oc.co.uk/forum/forumdisplay.php?fid=16)
+--- Forum: XUD Section (https://www.306oc.co.uk/forum/forumdisplay.php?fid=11)
+--- Thread: Am I being silly? (glowplugs) (/showthread.php?tid=20362)
Am I being silly? (glowplugs) - Martin306 - 12-01-2014
I was checking my glow plug relay earlier when I thought I'd check the voltage at my glow plugs.
With ignition on, 12.3v appears and slowly drops to 11.9v over about 18 seconds, then the relay switches off as expected and the voltage drops to 0v.
When I start the car though, and it's running, I get 12v at my glow plugs? regardless of engine rpm or temperature. What am I missing here or is this normal, does anyone know why?
Am I being silly? (glowplugs) - zx_volcane - 12-01-2014
Glow plugs can stay on for a few mins after starting the engine
RE: Am I being silly? (glowplugs) - Martin306 - 12-01-2014
(12-01-2014, 05:22 PM)zx_volcane Wrote: Glow plugs can stay on for a few mins after starting the engine
On a hot engine though?
I'll go for a drive and check them before I switch off.
RE: Am I being silly? (glowplugs) - zx_volcane - 12-01-2014
yup, can do
mine does
not sure that it should, I wouldn't have thought so, but perhaps the temp signal isn't getting to the glowplug relay, it should take that amongst other things into account to decide how long to leave them on I think.
RE: Am I being silly? (glowplugs) - Martin306 - 12-01-2014
Yeah that was it, on for 2 minutes after starting
RE: Am I being silly? (glowplugs) - Piggy - 12-01-2014
dont the later relays drop to 6volts after like 30seconds and then stay on for a minute or two?!
RE: Am I being silly? (glowplugs) - Martin306 - 12-01-2014
(12-01-2014, 09:51 PM)Piggy Wrote: dont the later relays drop to 6volts after like 30seconds and then stay on for a minute or two?!
Mine gives the full 12V for a few minutes. It looks the same system as my old 1.9 XUD in the 405, that's why I posted in this section
Never mentioned my TUD
That could be the case though
RE: Am I being silly? (glowplugs) - Ruan - 14-01-2014
(12-01-2014, 05:08 PM)Martin306 Wrote: I was checking my glow plug relay earlier when I thought I'd check the voltage at my glow plugs.
With ignition on, 12.3v appears and slowly drops to 11.9v over about 18 seconds, then the relay switches off as expected and the voltage drops to 0v.
When I start the car though, and it's running, I get 12v at my glow plugs? regardless of engine rpm or temperature. What am I missing here or is this normal, does anyone know why?
That's just battery discharge... Once the engine is on you've got the Alternator to help bring the voltage back up.
RE: Am I being silly? (glowplugs) - darrenjlobb - 14-01-2014
Once running the cycle on / off until the second temp sensor in stat housing (connected to glwplg relay) comes up to temp.
Voltage just dropping as your pulling from the battery, stops once alternator is up.
RE: Am I being silly? (glowplugs) - Martin306 - 14-01-2014
I knew about the voltage thing
i had no idea the plugs cycled with the engine running. I take it the idle quality is affected?