Why won t my Jeep start when its cold?
Far and away the number one reason that your Cherokee won’t start in the cold is the battery. A battery has two different ratings, cranking amps and cold cranking amps. Cold cranking amps are the batteries ability to start turn the engine over when it is cold. Battery capacity diminishes with time and use.
What causes a Jeep Grand Cherokee to not start?
Jeep Grand Cherokee Won’t Start Diagnosis. 1 1. Battery Cables. While the battery cables are not necessarily the most likely issue to cause your Grand Cherokee to not start, they are some of the 2 2. Battery Charge. 3 3. Starter. 4 2. Ignition Issues. 5 3. Engine Timing.
What’s the engine rpm on a 2004 Jeep?
Recently started to have this problem…
7 HO. Fast idle on cold start up and takes 5-10 minutes to go back to normal. Outside temps are 100F so engine is not really cold.
What causes high engine rpm when starting a jeep?
A dirty air passage from the IAC can give idle problems. Remove the IAC stepper motor and clean the plunjer and air passage very well. You will have to remove the resonator box for this, because the passage starts at the front of the throttle body.
What causes a hard cold start on a jeep?
This could be a case of an injector leaking into a cylinder, causing a flooded effect. You could leave the pressure gauge on it over night to check in the morning. The pressure should hold most if not all of the pressure, even for that amount of time.
What’s the engine rpm on a new Jeep?
On startup, the RPM will climb up to 2,000 and then idle back down to around 6oo. It doesn’t matter if the engine is hot or cold. Engine is the 4.7 in a ’99 Could this be a function of the throttle position sensor and if not, what could cause this? Thanks This could have to do with the TPS, but also with the idle air control (IAC) stepper motor.
Why does my Jeep not start on the first try?
In some cases it will not start on the first try. After starting it runs a bit rough for a few minutes. I’ve suspected the fuel check valve going bad and have turned the key to on for 2-3 seconds, off for 2-3 seconds, 3 times before trying some cold starts and this makes no difference.
How long does it take for a Jeep XJ to start?
98 Jeep Cherokee (XJ), I6, 173k mi When trying to turn the cold engine over, I have to crank things for at least 3-5 seconds. In some cases it will not start on the first try.