Ive had the problem before I cant remember what i did to fix it, but a/c compressor wont kick on unless i run a jumper from the battery. Last time I remember we messed with something behind the switches
I would check the pressure on the system first. If you have a leak in the system the pressure will drop and keep the compressor from cycling on ( keeps you from burning up the compressor) If the system is indeed holding pressure, the problem can be a compressor relay, on GM products this is normally under the hood close to the firewall. It also can be the A/C control module not funtioning. (Not sending voltage to the compressor clutch) On many of the newer systems the components( ie: clutch, hi-pressure switch, low pressure switch, relays) are already energized and the control module just completes the circuit to ground. In other words when you check for voltage at these items it will be present, even though the unit may not be engaged.
my 1998 chevy astro transmission surges, but not all the time,plus the po440 error code is on, are...
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my 1998 chevy astro transmission surges, but not all the time,plus the po440 error code is on, are these connected. and I am still getting a po300 error code. I replaced plugs wires and cap and rotor twice. better stuff the 2nd time. what gives.
I have changed the brake light switch, I actually tried two switches, because I still have the same...
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I have changed the brake light switch, I actually tried two switches, because I still have the same problem, the lights stay on. It started out to where I could tap the brake pedal and the lights would go off, so I am wondering if I could possibly have gotten 2 bad switches , or is there something in line that I need to check. I have not checked any of the bulbs at this time , and was considering doing that before any further testing.
heater fan blows fast then slow also hot and cold etc. all byitself. changed the elec. on firewall...
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heater fan blows fast then slow also hot and cold etc. all byitself. changed the elec. on firewall didnt help the therm on ceiling works. thinking of changing heater control next. what else can it be
chevy S10 tranny sticks in park when i disconnect the linkage it moves freely but the tranny is...
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chevy S10 tranny sticks in park when i disconnect the linkage it moves freely but the tranny is still stuck if i tap on the lever it comes out