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E36General discussion and technical help for (E36) 1992-1999 3 series cars. 318, 323, 325, 328.
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Your Ride: '97 318i M44 - Sedan
Okay sport's fans, identify this wire.
Since this is my favorite BMW community, I'm giving you guys first shot at it. My car, as most of you know, has been misfiring at idle. While searching for vacuum line breaks I found this on my '97 318i. Center screen, see the wire that goes off on a 45 degree right angle? It's a wire to an electrical plug that leads somewhere directly below the oil filter. I can't reach my hand down there to see if the wires are broken or just the insulation. Does anyone know what this connection is for anyway?
Your Ride: 92 525, 88 325 hardtop'ed vert and 83 320iS
Cylinder head coolant temp sensor. You should have one in the back as well.
For a vaccum leak on a 4cylinder, make sure you check the rubber hoses that run along the back of the intake. There should be 2 of them about 3/4 inch round. If they are soft and you can squeeze it and it stays that shape their no good. They are for your crank case vent which they lead to your pcv valve.
Start your engine, spray brake clean at all the air hoses and connections, if your idle increases, youve found your leak.
1992 525i, 1988 Hardtop'ed Vert and 1983 320iS