Q: My 2007 Grand Caravan has hard detonation problems.
Grand Caravan hard detonation, noisy, lacks power, cannot drive over 30 mph because it starts to shake. Can hear and feel the detonation (cylinders, spark plugs). So far replaced the following parts: Spark plugs (Champion, gap 0.050) Spark plugs wires Ignition Coil Throttle Position Sensor Crankshaft Sensor Knock Sensor OBD II Scanner Codes indicated multiple cylinder misfire (1,3 and 4) Spark plug from 4th cylinder was burned. Vehicle doest not have a fuel filter, if it does, would be inside the tank, also doesnt have a fuel pressure regulator. I checked that info at Pepboys and Advanced Auto Parts websites. I poured a bottle of Cataclean in the tank. After two days poured two bottles of injector cleaner...nothing has changed. Any possibility that the injectors failed?
My car has 180000 miles.
My car has an automatic transmission.
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
How do I read the tachometer?
The tachometer is on the left side of your instrument control panel, and tells how quickly the engine is moving. The tachometer measures your engine speed in terms of revolutions per minute (rpm). The tachometer is a semicircle, with the...
Blinking of ESP and ABS activation with auto-braking on bumpy roads on a 2002 MI ML320
You've got a problem with the speed system on that car and those things are very complex. What you'd want to do is watch my video "fixing insanely complex modern cars (https://www.youtube.com/watch?v=U3PuVCUqeHQ)," and you'll see how complicated your car is....
Car makes noise when taking off fast
You may need to have the engine mounts inspected to see if one is broken. This would be why you hear it in drive and not reverse; the engine may be moving and causing the noise. Have the noise checked...
No power new alternator. 1974 Chevrolet Chevelle
Hello. Thanks for writing in about your 1974 Chevrolet Chevelle. If you got a spark from the wire on the back of the alternator, then you shorted something out. You need to follow the wire from the alternator to where...
When i have my car running with my heat or ac on my car hesitates like it wants to stop when i'm stopped at a light.
As you may know, your car's AC system when working properly puts an extra load on the engine at all times when it is running. When this happens, your car's computer makes adjustments to compensate for this extra load on...
Car won't start after overheating - 2013 Chevrolet Cruze
Hi there. The main issue that occurs when an engine overheats is that excessive coolant sprays on critical electrical components and reduces the vehicle's ability to start after it overheats. However, in some instances, if the engine was damaged due...
After Monroe struts installed and multiple alignments, vehicle pulls.
Hi there. When it comes to alignments, check the Caster and Camber to your vehicle. These two angles are pulling angles. Keep in mind, most shops will set the Caster to allow the vehicle to drift to the left to...
Dead Battery again
You may have a failing voltage regulator that could be allowing the alternator to supply too much or too little amperage to the battery resulting in the battery never maintaining a consistent charge as it is designed to. The voltage...
I have a leaking power steering hose according to my dealership, they said it would take 5 hours to repair and cost $843.00, $800
Hi there. It would probably benefit you to obtain a second opinion. Although the power steering system can take time to prime and replace a hose, that estimate of labor is rather high; but expected by a dealership. If you'd...
Related articles
The Best Used Cars to Buy If You Have a Tiny Parking Space
In In many cities parking spaces come at a premium, so you only want to purchase one small space. This small space will end up dictating what vehicle you purchase, so we’ve rounded up some great candidates. Must-haves Arm yourself...
The Best Used Cars to Buy If You're a General Contractor
If If you're a general contractor, you probably aren’t in the market for a used car. More likely, you’re looking for a pickup truck, because you need to haul equipment and supplies to various job sites. Most contractors will likely...
The Top 5 Selling Cars in Arizona in 2012
Depending Depending on where you live in Arizona, the weather is either arid or there may be periods of heavy snow – such as in the mountain areas. The vehicles that have been popular in previous years for the area,...
Browse other content
Maintenance
Cities