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Chris
Chris, Shop Foreman
Category: Jeep
Satisfied Customers: 3168
Experience:  Jeep Certified Master Tech
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No crank/start on my 2008 Jeep Patriot? Ya. Battery is full

Customer Question

No crank/start on my 2008 Jeep Patriot ?
JA: Will the headlights turn on? Is the battery fully charged?
Customer: Ya. Battery is full dash lights on lights all work..
JA: Are you hoping to fix this yourself? What have you tried so far?
Customer: Took of pos. Battery cable for 2 hours..
JA: Anything else you think the mechanic should know?
Customer: Entry key works good.. Panic butten works.
JA: OK. Got it. I'm sending you to a secure page on JustAnswer so you can place the $5 fully-refundable deposit now. While you're filling out that form, I'll tell the Jeep Mechanic about your situation and then connect you two.
Submitted: 4 months ago.
Category: Jeep
Expert:  bill replied 4 months ago.

what's your skill level?

do you have and can you use a good teat lamp, can you jump a relay if i need you to?

do you have a good code reader OR preferably a good scan tool to retrive fault codes (if any)

there is a fairly common reason for a no start no crank BUT some tests should be done first

Customer: replied 4 months ago.
Scan doesn't show anything.
Customer: replied 4 months ago.
I mean Code reader doesn't show nothing.
Customer: replied 4 months ago.
I don't have a test lamp. But I have a multi meter..
Expert:  bill replied 4 months ago.

a multimeter will not show current flow only voltage, i would like you to jump the starter relay and see if the engine cranks if it does there is another problem if NOT the test light will be needed to determine if the starter has failed or a wiring problem has occurred

i need the vin to pull a correct wiring diagram so i can direct you to the correct relay

for this procedure you WILL need a heavy gauge jumper wire (12 gauge is best) with correct sized terminals attached

Customer: replied 4 months ago.
Vin#
1J8FT48W08D522237
Expert:  bill replied 4 months ago.

please read over this engineering case while i determine teh correct relay for you

https://www.dropbox.com/s/mywldk3zlnxj4tr/no%20crank.pdf?dl=0

Expert:  bill replied 4 months ago.

your car does NOT use a starter relay so a test lamp will DEFINITELY be needed, on the starter there is a small gauge yellow wire this is teh signal wire to activate teh starter, with the key in CRANK there should be power here if there IS the starter has failed.

now the fun part the starter is between the intake and block and a bit of an asspain to get at but can be done

Customer: replied 4 months ago.
Ya I can't even see the damm thing..
Expert:  bill replied 4 months ago.

you have to pull the intake tube and POSSIBLY the throttle body i use a bright flashlight, mirror and needle nose pliers to get the terminal removed

Customer: replied 4 months ago.
Well, I don't have a test light .
Expert:  bill replied 4 months ago.

the meter can tell you if you have voltage at that terminal BUT the test lamp will tell you if there is current flow

Expert:  bill replied 4 months ago.

it's up to you to decide if you want to send a couple of bucks on a GOOD test lamp or use the meter you have

Customer: replied 4 months ago.
I never heard the fuel pump since that all started.
Expert:  bill replied 4 months ago.

you never mentioned that, but our fuel pumps are quiet, do you NORMALLY hear the pump run?

Expert:  bill replied 4 months ago.

did you read and check over the document i sent a link to?

Customer: replied 4 months ago.
I always hear the fuel pump.. On my dodge van too..
Expert:  bill replied 4 months ago.

did you read and check over the document i sent a link to?

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