Possible wiring problem???

[Dtrickz 10+ year member]

Alright I've got a 96 Z-71 that has had an aftermarket cd player in it ever since i've had it. Well about a year ago i put a new cd player in it and everything went fine. A few months ago i noticed that when i start the truck it'll idle real bad(rpms go up to like 1300 then down to 800) until the cd player kicks on. If i get in and turn the key on and wait for the cd player to start playin and then start it will do fine everytime. so what could the problem be? havent looked at it too much cause i plan on upgrading the HU and i dont drive the truck a whole lot.

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[Dtrickz 10+ year member]

so no one have any ideas?

 

[Blove1991 10+ year member]

Idk but thats weird that the engine would react on the cd player......just a second thought...maybe the fuel pump isnt kicking in fully and the truck idles up high then starts to cut down until the fuel pump starts to push??.....Cuz i dont c how the headunit would affect the RPM's of the truck......But other than that i dont have a clue