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sprinkles08, ASE Certified Technician
Category: Jeep
Satisfied Customers: 22989
Experience:  Chrysler/Dodge/Jeep Master Certified, ASE Master and Advanced Certified, Trans and Hybrid Specialist
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05 Grand Cherokee 4.7 liter: the right side cylinders are

Customer Question

05 Grand Cherokee 4.7 liter: the right side cylinders are not hitting. The coils are firing the plug, I disconnected the coils one at a time, #2#4#6#8 made no rpm difference at all. Is there a common ground on the right side injectors that is not common to the left side?
Submitted: 1 year ago.
Category: Jeep
Expert:  Joshua Haynes replied 1 year ago.

Hi, my name is ***** ***** I will assist you. While I look up the wiring diagram, may I ask if any work has been done on your Jeep recently that may be related to this problem, or did it happen all at once?

Expert:  Joshua Haynes replied 1 year ago.

While waiting to hear from you, I did look up the diagram and all the injectors are grounded by the computer (ground-side control) and they all share power from the same fuse (constant power). This should not affect one bank only. However, there should be a connector for each bank that could be partially disconnected or corroded, especially if someone has worked on it and maybe did not attach it securely. If you have access to a noid light (you can rent them at a parts store usually) then you can check injector pulse by unplugging one at a time and installing the noid light in the connector to see if it is getting its ground signal. It is not safe to test injector circuits with a test light, so if you do decide to go this route, please use a noid light to avoid damaging the computer. Keep me posted and good luck!

Expert:  Joshua Haynes replied 1 year ago.

Hi, this is Josh checking in to see if you have made any progress on the vehicle

Expert:  sprinkles08 replied 1 year ago.

Hello and welcome to JustAnswer!

Do you still need help?

Customer: replied 1 year ago.
Sorry gentlemen, you guys had a glitch with your system and I was never able to communicate with you. I resolved the issue with the Jeep myself, however thanks anyway.
Expert:  sprinkles08 replied 1 year ago.

I'm glad you got it repaired.

Customer: replied 1 year ago.
sprinkles08, Do you guys have any customer service in the United States? There is still an issue with my account , I have called the customer service line and all I get is someone in the Phillipines who can not speak English.
Expert:  sprinkles08 replied 1 year ago.

This is the US customer service number.

Customer: replied 1 year ago.
Thanks, ***** ***** they can get me straightened out. You are the only one I have been able to communicate with for the last 2 weeks.
Expert:  sprinkles08 replied 1 year ago.

You're welcome!