Fuse #1 cuts power to the glow plugs, but the glowplug light gets power from fuse 4. Therefore, if the light stays on, it's an indication that the lamp relay K9 has sticking contacts or a short due to water. The fuses are below your instrument panel on the left side. Fuse #1 is the first one on the left. starter issues. 1999 - 2003 7.3L Power Stroke Diesel - Question regarding wiring for glow plug relay - Hey folks, I have recently picked up a 2000 f250 7.3 and am currently checking over the glow plug system. Resistance on all glow plugs were in tolerance. Glow plug relay would not send power to glow plugs. My question is this. Symptoms of a 7.3 bad glow plug control module are not many. All of them are explained below. 1. Difficult Engine Start. A difficult engine start is a common sign of defective glow plugs. Malfunctioning glow plugs cause the combustion chamber to not gain the required temperature in cold weather to ignite and start the engine. 5.1k. Name: Isetta. Ford Model: Fiesta Style 1.5tdci Econetic 2015 year. Ford Year: 2015. UK/Ireland Location: Sussex. Posted May 23, 2017. Had my 1.6TDCI for 9 years. I reckon I saw the glowplug light come on only about 10 times each year and then only for a second or two. The glowplugs work even when the light is not on, the light just means 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. This is a very simple thing to do, i did the same thing on my 6.9 diesel, pretty much all you need to do is unhook the glowplug monitor and hook up the wiring to the switch which can bet put in the truck and pretty much all the wiring will be their you can easily do this in less then five minutes. Reply Like. # 3. 03-31-2004, 02:24 PM. Its bosch glow plugs on ebay 27 $ 8 glow plugs and shiping included . Pre-Power Stroke Diesel (7.3L IDI & 6.9L) - I change glow plugs still hard to start - I change 7 glow plugs one is broken so im living disconected.Glow plugs relay is bad im take wire from glow plugs relay and im install manual switch inside the cab still is hard.IM checing Glow plug prices can vary, but somewhere between 25 and 50 per plug is pretty standard, meaning they are a little pricey, but not too bad. In the ford s max the glow plug relay is located towards the rear, beneath the airbox and in front of the gearbox. PsQd.

ford focus c max glow plug relay location