Slow crank 04 4.7 - JeepForum.com
 
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post #1 of 6 Old 10-17-2021, 02:48 PM Thread Starter
04wjlaredo554
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Slow crank 04 4.7

Hello I have a slow crank on my 04 it only does it sometimes and it's very strange.
Battery is only a year old starter could be a issue possibly but want to see if anyone else had this I have provided a video of what it currently does.
Link: https://youtu.be/rdBY5iPxLTQ

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post #2 of 6 Old 10-17-2021, 02:53 PM
WJ60
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Have you checked all connections between the battery, starter, and alternator? Sounds like an intermittent connection.

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post #3 of 6 Old 10-17-2021, 04:20 PM
cDee63
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When mine was doing that turned out to be coolant entering the cylinder through a bad head gasket, at least I'm pretty sure that was the problem. After replacing the head gaskets it has never done it again with nothing else changed. Liquid does not compress, I figured enough was getting into the cylinder do to severely reduce the chamber volume increasing the compression in that cylinder. That's my theory anyway.

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post #4 of 6 Old 10-17-2021, 04:33 PM Thread Starter
04wjlaredo554
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Quote:
Originally Posted by WJ60 View Post
Have you checked all connections between the battery, starter, and alternator? Sounds like an intermittent connection.
I will double check the terminals again and see
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post #5 of 6 Old 10-18-2021, 07:52 AM
Delta0
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Check the voltage between your battery posts while someone cranks it for you.

Unless you have long enough meters to enable you to measure your battery voltage when you are in your car.
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post #6 of 6 Old 10-27-2021, 02:15 AM
CraigMBAx
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Quote:
Originally Posted by cDee63 View Post
When mine was doing that turned out to be coolant entering the cylinder through a bad head gasket, at least I'm pretty sure that was the problem. After replacing the head gaskets it has never done it again with nothing else changed. Liquid does not compress, I figured enough was getting into the cylinder do to severely reduce the chamber volume increasing the compression in that cylinder. That's my theory anyway.
That's what this one sounds like to me. It clears out the liquid and it takes one cycle to do it on one cylinder.

1999 WJ Limted - Ex Soccer Mom ride turned Rule 25 Compliant Bike Hauler
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