first of all, i am not a mechanic, but i have read as much as any sane person can on the topic of the YJ wrangler and the carter 258 idle problems. i have a 1990 yj, 6 cylinder, 4.2L, 5-speed manual transmission. from the MOMENT i bought this jeep 14 years ago, in feb. 1990, i have had idle and stalling problems. to give further details, i bought this car in California, with all their extra emission standard nightmares, though now i live on the other coast, 3 thousand miles away. the first week i owned it, every time i came to a stop at the bottom of my VERY steep driveway, the jeep would stall. back to the dealer it went, and adjustments were made that cleared this problem up, though i think the jeep then continued to idle no lower than 1000-1100 rpms. anyway, fast forward to the present. over the past 8 years, the jeep has seen very LITTLE driving, and was basically stored for future enjoyment. this past summer, the jeep was brought back to full use. a friend of mine, a mechanic, cleared all the cobwebs, and brought the jeep up to speed. in fact, after some research, i had him install the "Juicebox", TFI upgrade from www.driveajeep.com
. start-ups are much better now, but here is the problem. the old idle problems have resurfaced, but only in COLD weather, before the engine has heated up. once the car heats up, the stalling and idle problems seem to minimize, returning to the old 1000-1100rpm idle baseline. i know this rpm level is high for this jeep, but it has always seemed to work and was a decent compromise. i know that there are different cold idle and warm idle "components" in the carbureter. basically, until the car warms up, i have to goose the gas upon slowing down to keep the car from stalling. i think my mechanic friend has given up on this frustrating situation, and despite my TFI upgrade, when the car is cold, in Northeast cold weather, i still stall at any slowdown or stop, unless i coast to the stop, out of gear, with my left foot on the brake and my right foot tapping the gas. i have read various articles, as i mentioned previously, and before i find a mechanic to consider the carter carb fix mentioned here: http://www.jeeptech.com/engine/carter.html
or any other ideas i have read here, i wanted to poll the forum.
as i said, the idle curb seems fine, if 1100 rpms is fine, when the car is warm, but stalling is plentiful in cold weather when the vehicle is cold, so do all the classic carter carb problems apply in this situation???? at this point i am not willing to have installed a new Weber, or the nutter bypass. the carter stays, so how best to deal with this specific problem? THANKS