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

asked by on February 15, 2017

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.

Electric Problems Inspection $79.99 - $89.99 Get a Quote
Car is hard to start Inspection $79.99 - $89.99 Get a Quote

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.

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.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

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

What others are asking

When my car is idling the rpm starts to increase

In the majority of vehicles, engine idle speed is controlled by an idle control valve (ICV). The ICV valve can fail or a faulty or blown fuse in other electronically controlled systems can cause the IAC motor to malfunction, leading...

Can you replace just the hydraulic line in steering rack or does the entire rack have to be replaced?

The individual lines can be replaced but that is only worthwhile if there are no other faults with the rack. Also, inasmuch as the rack will probably have to be removed from the vehicle to replace an individual line, there...

Why won't my parking brake hold after rear rotors and pads were replaced?

The parking brake system is an entirely separate system from the main brakes in your vehicle. The parking brake is operated by a cable that runs to a brake drum system that is not controlled or impacted by your regular...

my transmission is "slipping" 3% of the time

Hello. From what you describe, it would appear that your transmission is beginning to slip. This can be caused by many things. The first thing I would do is check the vehicle's transmission. Automatic transmission use fluid pressure to operate,...

Truck won't start after replacing fuel pump and filter. It acts like it has no spark - 2000 Jeep Grand Cherokee

If the motor started and ran for five minutes, it is highly unlikely that it has no spark. You may want to consider checking the fuel pressure regulator. As you may know, this is responsible for helping maintain the correct...

Car will not drive over 30 mph

The engines computer could be in a “limp” mode. It is a reduced power mode because of a trouble code(s) set in the computer. It does this to prevent further damage. Any type of misfire code, a major sensor, or...

First gear shifting issues - 1999 Isuzu Amigo

Hello. If your vehicle is experiencing shifting issues and has not had the transmission serviced after nearly 100k miles, it may very well be time for a service. Automatic transmissions operate using the fluid pressure to shift automatically. If the...

Acceleration problems in 2004 Toyota Solara

Your particular vehicle has an electronic throttle body that drives by wire, rather than a mechanical cable. The electronic throttle body relies on signals from the accelerator pedal to know how much to open or close the throttle plate. A...

AC taking too long to cool. 2010 Honda Crosstour

Hello. It is possible that the air conditioning system needs a recharge. There could also be a problem with the air conditioning compressor in that it needs to be replaced or that it is clogged. If you'd like to have...

Related articles

How to Buy a Good Quality Ignition Cable (Spark Plug Wires)
Spark Spark plug wires connect the spark plug to what they’re creating a spark in. Whenever you are changing out your spark plugs, it’s a good idea to check on those spark plug wires to be sure they’re up to...
Can I Safely Add Camber to My Wheels?
It’s It’s increasingly common to see “tuner” cars (or less commonly, pickup trucks) with extreme camber settings — in other words, with wheels and tires that are noticeably tilted relative to vertical. Some owners may wonder whether changing their camber...
How Long Do Brake Calipers Last?
Calipers Calipers are an essential part of the braking system of any vehicle. The calipers press the brake pads against the surface of the rotor to slow or stop the vehicle. The two types of calipers, fixed and floating, are...