Skip the auto shop - Our mechanics make house calls

Q: Iod Fuse / Check Engine Light

asked by on

The IOD fuse blew on my 2008 Jeep Grand Cherokee. I replaced the 2 IOD fuses and it started up fine. Now a couple days later my Jeep hesitates when it starts and the check engine light came on. What issues should I look for?

My car has 171000 miles.
My car has an automatic transmission.

A: Your first order of business is to extract ...

Your first order of business is to extract the problem codes which are driving the Check Engine light. Hesitation to start when cranking - if this is what you mean - could be a sign of a weak power supply to the fuel pump from burned fuel pump relay contacts or a clogged fuel filter. Hesitating after it starts could also be caused by fuel pressure/supply issues (low pressure to be specific). Most auto parts stores will check your codes for free on a "time-available" basis. Alternately, a certified YourMechanic technician can come to your location to perform a Check Engine Light is On Inspection on your vehicle and confirm any necessary repairs.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: when should i get a tune up for this type of vehicle

Spark plugs are recommended to be changed before 100,000 miles on your Mercury Mountaineer. You should look into getting it done before that mileage or if you've had another problem that may have fouled the plugs. In this case you...

Q: leaky power steering pump, steering wheel will not turn

Hello. It could be possible that the steering gear or power steering pump have seized and are no longer functioning. In most cases of pump failure, the steering will still turn, however it will require increased effort due to the...

Q: I have the check engine light on and checked for DTC's it says ECM set and CEM set

Hi there, thanks for writing in about your Volvo. There should be specific alpha numeric "codes" displayed on the Code Reader. Do you see/have those "codes"? These will help pinpoint any faults and assess the issue. I would recommend having...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
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...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.