I am the new owner of my first Porsche, a 1988 930 Cab.
Worked great last fall, put to bed over the winter with fuel stabilizer. Did a little maintenance work over the winter: Air and fuel filters, new plugs. Now have a max turbo boost hesitation and a week ago it started stalling when the engine warmed up (unable to maintain idle). Takes a few minutes downtime before it restarts, but still will not idle when hot.
Going through the "sticky" describing the failure to start issues and noticed a few things that I hope someone can shed some light on.
1. The manual says the Turbo only has one fuse in the engine compartment left side (Heated rear window, rear wiper return) except I have a Cab so obviously don't have these. I do have two fuses, both 25A (different colors though so what gives there?). 3 red wires, one feeds both fuses which have a buss bar across them on that side, the other two leave the other side with one heading towards the front, the other vanishing into a wire bundle. Question: What are these circuits?? The Carrera has 2 fuses for heater blowers (1 25A and 1 16A). Could it be for heater blowers????
2. While pulling out the fuse panel, I noticed two orphan plugs: One looks an awful like the plug that goes into the O2 sensor but that is already plugged in (see pic). The other is a square plug. Question: what are these?? are they just orphans from a standard wire harness that is used across multiple markets and models therefore has these orphans lying about?
3. In making sure all hoses are tight and leak-free, I found a red, small diameter hose coming from just above the butterfly. It goes around the engine to the firewall but just hangs in space in the engine compartment. Question: is this supposed to be there just sucking ambient engine compartment air in or has it come unplugged from someplace (cam;t see where).
Many thanks for any input. Really enjoying joining the "pelican flock".
