My ZJ always has trouble with cold starts, and now that it's cooling off again, I want to get rid of the nuscence.
It's a '95 with the 318 Magnum in it, and it's got an aftermarket throttle body spacer, a K&N cold air intake, and the exhaust has had the catalytic converter emptied with a Flowmaster Super 44 on it. I also use Royal Purple oil in the engine. No check engine lights. It runs great after it warms up, but when it gets colder than 70F out, it doesn't like to start up.
It will usually start up, but if I don't give it gas it will usually die. Sometimes, when it's ~45F here in Phoenix, it will backfire while I'm trying to get it started (it really is loud as Hell). It's really annoying for me, and I'm sure it's more annoying for my neighbors.
Also, I was camping near Mormon Lake a couple of days ago, and when I tried to start it in the morning it wouldn't even begin to run (I made a small fire under the engine and it reluctantly started after nearly an hour). It wasn't too cold, but it was a little brisk; I'd estimate somewhere around 40F.
It's quite inconvenient, and I plan on moving to Colorado later on, so I need to get it fixed. I haven't heard too much about ZJ's sucking on cold starts, so I figured I'd see if anyone here knew what to do about it. Does anyone know what the problem might be or how to fix it? Perhaps resetting the ECU?