| C4 acting up. What do you think? |
Subject: C4 acting up. What do you think? by TommyT-Bone on 2009/4/3 16:19:49 90 Corvette L98 manual trans. This has been an intermittent problem over the past several months. It's just a recreational vehicle so I don't really pound the miles on it. Matter of fact, I'll just drive it locally because of this. Cold start. Starts fine, idles fine, everything works except my radio antenna. I have it in the up position. After about a 20 minute warm up , the idle deteriorates to rough, The A/C controls get locked in position, the radio sticks to whatever station and volume you had before on the glitch hits. All the controls of the radio and temp conrol no longer operate. No on/off, no up down temp. Just frozen. Meanwhile the idle is bucking. It works fine under acceleration and has plenty of power. Stop at a traffic light and the engine sounds like it's surging up and down, up then down. The belt tensioner at this point is dancing up and down too. There are no warnings or lights on but there is a code in the display next to the temp up/down control button where the outside temp usually displays. It show a ( - -- -- ). Short dash, long dash, long dash. So I'm just  Any thoughts on this are truly welcome. |
