grumpy1
Active Member
Know it's the wrong forum for this. Here's what I got I recently purchased a 1987 d100 with 118k original miles. It has been parked for many many years in a pole barn with serious electrical issues. It has power windows power locks an cruise control.318 with carb . I got the windows power locks an cruise working again. Got ac working Then it had charging issues got that resolved..wiring problems. Next it developed a vacuum leak at intake at egr valve crossover. Sprayed some we 40 on intake an found leak an changed intake gaskets. Prior to changing intake gaskets temp gauge was working...after changed gaskets on running like a top now....no temp gauge now.. Not the temps sensor it has 2 wires. The temp sending unit has 1 wire question is ...can I disconnect sending unit and ground that wire turn switch on shouldn't it peg the gauge in the hot position. Would that indicate a bad sending unit.. Next question can I take my meter an check wire for continuity. Put one test lead in plug for sending unit ground the other turn switch on an see what the reading is. Would that tell me if the wire going into wirng harness is good back to the gauge. While I was replacing intake gaskets . I went ahead an replaced water pump.. thermostat..heater hoses.. upper an lower radiator hoses...an done away with that air pump crap too an all associated....between gettin rid of that smog pump a new 2.5 in dual exhaust it put more pep in its step. With them wires being moved out of the way to replace to replace intake gaskets wonder if it broke a wire inside the insulation.....them wires are kinda stiff after all they 33 yrs old. I should be able to check that wire with my meter...any ideas