have an 86 with a lg4 and fast idle solenoid always has power.....was wondering if anyone has had this issue

The solenoid you are describing is for you air conditioning, or when you have your defroster on. It is there so your engine doesn't stall when your air conditioning compressor is on. My solenoid wanted to stay in high idle mode even when the compressor was off e.g. when on heat or vent. I simply disconnected the wire to it. I do not use air anyway.

lmk.i have the same issue and for the life of me cant figure out why,and unfortunately i had to unhook it for now..

I am ok with unhooking my solenoid, but I don't know if it is the solenoid its self, or is it getting constant power.

dont unhookit,fix it. i got a thumper of a motor and even with my motor it doesnt like the ac on. you an feel it at idle. needs the kicker. mine has constant power,not the solenoid. use a simple test light to check yours or make one. a12v light bulb and 2 pieces of wire. mine is dead until i hit the ac,it powers the solenoid like it should but after you turn the ac off the power remains..thats the bugger for me..any help anyone?

I would also like to know what needs fixing. Until then, is stays unplugged.

I did'nt have a problem until I removed the electronic Q jet & distributor....not sure if thats why....I do not believe the computer effects the fast idle solenoid. It is a must with a car with A/C. Any help with this would be appreciated.

Thanks
Frank

There is a circuit for the computer to activate the fast idle solenoid.

Can you give more details?