Hello group,
I've got a '99 XJ 4.0 Auto with just shy of 100k mi. that's developed a problem lately. I've googled all the idle problem links and have done all the T-Body cleaning steps to no avail.
So, here's the problem: Cold starts on cold mornings, slow to crank, stumbles at first, then with a blip of the gas pedal it flattens out and idles fine, remove my foot and it stalls. Start again, it'll crank for a while, and I'll hold it WOT and it'll fire with a strong gas smell. Drive it for a few minutes and it'll smooth out and be fine until it sits again in the cold.
I bought a set of plugs, wires, air filter, rotor and cap to see if that'll help too. I also had my battery tested and it showed that it needed to be replaced, which I'll get to this weekend.
I guess, the questions lies in the idle problem, could it be solved with the battery and tune? Is it likely to be something like the two sensor plugs that are bolted to the TB?
Thanks in advance for all your help!
Josh