Join Date: Jul 2000
Location: New York
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I have an '87 YJ with a 258 I6, TR upgrade, MSD 6A, recently rebuilt carter and K&N filter. The MSD was hooked up so that the computer is out of the picture and it is connected directly to the distributor and the coil. I recently had the mechanic adjust the timing and it was running really smoothly. Quicker to warm up and have not had a problem starting it since the upgrades and idling was great. I recently noticed that after doing a litlle hihway driving, and then switching back to street driving, the idle becomes very shaky. Also, after I started it tonight, i gave it a bit of gas after about 3 or 4 minutes to bring it out of high idle and it went down a bit to about 1500 RPMs. It was not idling so well and when I gave it gas it almost sounded like it was congested. It made a funny sound, kind of like it was clearing something out and then made a smooth sound(while on the gas). When i released the gas, the voltage dropped and the car stalled. This is the first time i had a stalling problem since the upgrades and since the timing was adjusted. From the symptoms described, does anyone have an idea of what might be the cause. I have a Weber in the garage that I am going to rebuild but was hoping to wait till the spring till it gets a bit warmer to do the install. Someone I spoke to said it may be a vaccum problem, but how can I tell that for sure and if it is that, how do I fix it? If anyone has any suggestions, please let me know. Thanks in advance.
1987 YJ 258 I6, 5 Speed, TFI Upgrade, MSD 6A
1999 Cherokee Sport, Stock