No need to remove them unless you find an issue. If you wait till after Plugs shut off and pump shuts off volts will come back up a bit. Need at least 10.5 to fire. 2000 F350 Lariat auto 4x4 cc Dually hutch/harpoon mod, zoodad mod, prepump filter/separator, billet fpr gold spring DIY Tymar intake. Believe 2011-2017 Glow plug Module location 6.7l diesel passenger side inner fender. Thats why the glow plugs heat up. The contacts inside the relay are probably worn and/or oxidized and causing high resistance which takes current away from the glow plugs and is hard on the battery's. The minute delay is normal. That is just the PCM telling the relay to shut down after heating the chambers with the glow plugs. Actual offers of Control unit, glow plug system for FORD Focus C-Max (DM2) 2.0 TDCi Diesel 136 hp HELLA 4RV 008 188-631 Relay, glow plug system Article number 1999 - 2003 7.3L Power Stroke Diesel - glow plug fuse keeps blowing - It has just turned cold here in kansas city. My 97 PSD keeps burning up fuses when the glow plugs come on. The last 2 fuses didn't last 2 seconds-they burned up as soon as I turned over the key. The second one was a 40-amp (in a 30-amp circuit)! The relay is in the box under the bonnet in the right corner, it is relay number 10 as you look down on the relays and fuse's its on the back row to the right of the yellow relay and its fuse 36 which is the top fuse of the ones at 90deg to the normal looking fuses. Jpnu. You can ground the signal wire using the test light and you can ground the "Ground Terminal" to activate the Relay. Keep in mind ONLY to use (-). The GPR is ground switched via the PCM. But, that in and of itself does not prove the relay to be functional under a load. The GP Cycle is dependent upon EOT and AIT. Believe 2011-2017 Glow plug Module location 6.7l diesel passenger side inner fender. So I had power in with good relays, just no power out. My truck would start reliably to zero with no glow plugs, it would not start at -10, just to give you an idea of how cold you can go without them. 2003 Chevy 2500HD LB7 white extended cab long bed. PPE Hot, FASS 150, 5" pipe, boost valve, 3" intake elbow, sleeves, Insight CTS2, and Glow Plug #5 location and Installation 06 6.0 250. 1999 to 2016 Super Duty 1999 to 2016 Ford F250, F350, F450 and F550 Super Duty with diesel V8 and gas V8 and V10 engines. After using my code reader, it showed the P0380, which is the Glo Plug Heater Circuit Modual. I had the dealer double check my findings with their larger scan tool, and confirmed the problem. The Glo Plugs were just fine, it was the Modual. They are about $166 here in Calif. A very simply switch out. 7.3 glow plug relay both big post always hot. My 7.3 is not starting in even mildly cold weather of about 40 degrees if its not plugged in. Tested my GPR and even without the key in the ignition BOTH big terminals are hot at all times. The small terminal closest to the front is also always hot. Nothing changes when the key is turned to "run

ford focus c max glow plug relay location