Take the air filter off, its right there in front of the fire wall
Actually left to the fuel filter looks like a starter solenoid for a Ford
They are both very bad at this!!! Horriable answers. Yes it does look like a starter relay on the 2002 model years. What they frogot to inform you is that their is 2 relays just left of the fuel filter housing that are almost identical. Ones the glow plug relay and other is the IAT heating element that screws into the "intake" right by the hot side charge tube on the passenger side. Its main purpose was to minimize white smoke on start up and chances are it doesn't even work anymore so ignore it. The glow plug relay has a large black with orange trace wire on the large terminal. It comes from the starter relay that is mounted on the inside of the passenger side fender by the hood strut. It will have constant 12v on that terminal and with the koeo you should hear a click and the 12v if operating properly should show up on the other large post within a second of turning koeo. If not then you can suspect the relay for and open internally and replace and retest. Very common and a good start for a hard start when cold diagnosis. Hope this helps. Good luck.
wire diagram for 1999 Ford F250 diesel glow plug relay
The glow plug relay, on your 2004 Ford 6.0 liter diesel engine, can be found just below the fuse box. The fuse box can be found in the engine compartment.
the glow plugs are located under the valvecovers should be 8 of them
on top of engine on passenger side behind warm air relay they look the same but the glow plug relay is the shorter one
Mounted to the passenger side frt valve cover
how locate glow plug relay on 2008 Volvo diesel 2.0D
glow plugs, glow plug relay, poor compression on engine are some things that will give problems
no glow plugs
Unless your ford focus is a diesel your car does not have glow plugs.
The 1991 Dodge diesel truck glow plug relay is located in the fuse box. The fuse box is located behind the battery box. The glow plug relay will be in the right upper corner of the box.
the glow plug relay can be found in the super rapist tard section of your beetle
it looks like a starter relay and its on the passager side valve cover area (powerstroke57) He is correct but be sure that you don't mistake the intake heater relay for the GP relay they are the same relay and are right next to each other. The Glow plug relay will have a orange and black wire to it that goes to the starter relay.