Date: Sat, 24 Oct 1998 08:13:14 -0400 (EDT) From: jerrdudenopsamv.net (Gerald Chapman) Subject: 84T warm up/duty cycle?
Okay guys get your arms around this one. As I have written before my 1984 turbo gives me trouble djuring warm up and has a poor idle. When I start the car it purrs for about 90 to 120 seconds then begins to stumble and run rough for the next 20 minutes or so. Even fully warm the idle has a skip in it. But it runs fine above idleand even the idle s perfect for those first two minutes. I have replaced the warm up regulator, the auxillary air valve, chcdked all the thermal switches,and have done a tune ukp and replaces the o2 sensor. I put a duty cycle meter at the test conection and watched the car warm up. When it first starts the meter jumps a little then stays at 41%,this is when the caris just purring. About 90 seconds into it the car starts to stumble and run lousy . This when the meter goes to avout 72%. fIt gradually drops down a little as the car warms. At fully warm the meter reads in the 52% to73% range. Lide I said , above idle it will drive fine ,but never loses the poor idle except those first 2 minutes in the morning. PLEASE SEND HELP!! This is driving me crazy. Regards, Jerry C.
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