Q: Won't start unless I wiggled the solenoid harness. Extreme break pressing or shifting through gears several times.

asked by on

hard to diagnose over the internet. but i need help. i have about 3 different solutions to try. so i figured id ask here. i own a 2004 jeep WJ. 4.7v8 with the 454 rfe tranny. it will not start first time.. ever. very rarely. i ether have to press the break super( and i mean ungodly) hard.. shift the gears several times back and fourth( auto matic. so just sliding the shift knob through all gears and back several times). and possibly get under the jeep and wiggle the transmission solenoid wire harness. and it will eventually fire. when i turn the key. there is no attempted turn over. no sturring. just basically power loss to the radio and such..the starter was replaced last year. so if it was a dead spot. that wouldn't make since. so its ether the wiring harness for the solonoid.. the solonoid itself. or the ignition system...? HELP PLEASE lol

My car has 150000 miles.
My car has an automatic transmission.

There is a ground or broken wire issue in your vehicle causing the engine to not start. Check the harness to the solenoid and see if there is a loose wire or a broken wire. If the wiring is good, then check the wiring to the brake light switch and see if the wires are loose or broken. If the wiring is good, then the shifter interlock solenoid in the shifter is shorting out and needs replaced. Note: The ignition system is good as the engine starts and runs. If you need further assistance with your electrical issues, then seek out a professional, such as one from Your Mechanic, to help you.

Was this answer helpful?

Hi there. Based on your inquiry, I can see how you might be confused as to what’s causing your starting issues with the Jeep Grand Cherokee. If the car only cranks over when you wiggle the electrical harness; it’s quite possible that the harness itself needs to be replaced. I would also check your main electrical relay; especially if you’re having problems with accessories. Since there are so many possible issues, it might be a good idea to have a professional mobile mechanic come to your location and complete a car is hard to start inspection.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Won't start unless I wiggled the solenoid harness. Extreme break pressing or shifting through gears several times.

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Jeep Grand Cherokee loses power when accelerating breaks up like the fuel is deprived.

Hello and thanks for writing in. I believe you are headed in the right direction. I would suggest checking the MAP sensor as well as fuel pressure to be sure that all fuel injectors are firing properly and not plugged....

Q: My VTEC engine variable timing solenoid keeps going bad every week to two weeks, yet that's the only code that pops up on Autozone

Hello, thank you for writing in. The fact the solenoid continuously fails may indicate that electrical side or mechanical side behind it is not working properly. You can do two things to start off diagnostics. First, considering the interaction with...

Q: Belt squealing and battery dead.

Fluids in your engine all look and feel different. Coolant is very thin, somewhat clear no matter the color and oily. When the car is running the cooling system is under pressure and if a leak develops it will certainly...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...