1995 Jeep Grand Cherokee won't start promptly in the cold

jeep
grand-cherokee

#1

When it’s cold . You put the key in the starter whole and you crank it over ,it will not start . leave the key on for awhile you can hear the relays come on it starts right up. Waiting time will differ from 10secounds to 1min. depending how cold. summer time no problem.


#2

I think I would start with having the battery tested. It just might not be putting out enough to activate everything in colder weather.


#3

I would clean the battery posts and cable clamps.

Battery connections are the first place to begin when you have a “No Crank” situation. Even

if you have a new battery, if the connections are loose, dirty or corroded, you will not be

allowing the full flow of current to pass thru the connections. The connection may be

enough to turn on the lights, but not enough for the huge flow that is needed to operate the

starter. This is where many people say that they know the battery is good….”because the

lights come on”. This is no more a battery test than licking a 9volt battery. It only tells you that there is electricity…not how many volts or the amperage that flows from the battery.

Jump starting may have wiggled the terminal just enough to allow the current to pass and start the engine, but tomorrow you have the same problem.

First remove the cables from the battery and use a wire brush to remove any corrosion and dirt from the battery posts and the cable terminals. There is a tool with a round wire brush for this purpose, found at any auto parts store for less than $10 http://shop.advanceautoparts.com/p/kd-tools-terminal-battery-brush-kdt201/25980576-P?searchTerm=terminal+brush.

Before connecting the cables, apply a coating of di-electric grease to the battery posts this will keep oxygen away from the connection so that it will not corrode as fast.

It is just as important that the other end of the cables also have a clean connection. Remove the negative cable from the battery again so that you do not short anything out. Follow both cables to their far ends, remove this connection and wire brush the connection and the cable terminal clean and retighten these connections.

If there was work done recently, there may have been an “engine to body” ground that was not installed following the work. These grounds normally run from the rear of the engine to the firewall and are uninsulated and most are a braided wire. If any of these are found unattached…reattach them.

Remember….this is not a “Sherman Tank” don’t over tighten the connections.

Tight…tight………………too tight…broke!!!

Yosemite