Skip the auto shop - Our mechanics make house calls

Q: 2007 Dodge Grand Caravan hard detonation problems

asked by on

Caravan has hard detonation problems. Engine lacks power, cannot drive over 40 mph because starts to shake.OBD II Scanner detected engine misfire on cylinders 1, 3 (back) and 4 (front). So far have replaced sparks plugs (#4 was burned), spark plugs wires, ignition coil, knock sensor, TPS, Crankshaft Sensor and poured Cataclean into the tank. Two weeks later poured B-12 Chemtool (2 bottles), problem persists.

My car has 180000 miles.
My car has an automatic transmission.

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・Fair and transparent pricing

Get a quote

What others are asking

Q: What is the best tire for towing and light off-road use?

I personally run General Grabber AT2's, and I love them. I have a Tacoma, and don't do much towing, but they are LT rated and have a thick sidewall. The most popular all terrain tire is the BF Goodrich All...

Q: SUV getting only 15 mpg

It is possible that your tire pressures may be low and went unnoticed by the technician who last serviced your vehicle. I would recommend having your tire pressures checked because, if they are low, it could potentially cause both of...

Q: Restricted Performance message on dashboard

When the controller sees a misfire, it shuts the fuel off to the offending cylinder, hence your "restricted performance" message. Your friend may be right because coil failures are quite common on the Jaguars. P0357 says your failure is on...

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...
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...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...