Why does my 2006 300 Touring rev up then down at steady speed?

Asked by Nov 02, 2012 at 11:45 AM about the 2006 Chrysler 300

Question type: Maintenance & Repair

When driving at a steady speed, I notice the car revs up a bit then down.  I can accelerate no problem but when it goes along at a steady speed, some times it will porpoise up and down.  Why does it do this and how can it be fixed?

2 Answers

223,745

Could be a couple things. Clean your throttle body, and idle speed control valve, also check for vaccum leaks, clean your MAF. Might want to inspect your coils and plugs.

1 out of 1 people think this is helpful.
335

Also check fuel injectors, you might want to get a strong fuel system cleaner. Chrysler dealerships use BG products. BG 44K Fuel system cleaner and power enhancer this works really good. It also increases octane levels in the gas. I have used it a few times and have noticed better throttle response and bit more power, also increases fuel economy.

Your Answer

Add photo

Related Questions

300

Looking for a Used 300 in your area?

CarGurus has 22,149 nationwide 300 listings starting at $1,000.

ZIP:

Search Chrysler 300 Questions

Chrysler 300 Experts

#1 Jetlounge
Jetlounge
Reputation 1,620
#2 Eddie_G1
Eddie_G1
Reputation 850
#3 Whatisit
Whatisit
Reputation 790
View All

Related Models For Sale

Used Dodge Charger
357 Great Deals out of 29,619 listings starting at $2,475
Used Ford Mustang
364 Great Deals out of 44,400 listings starting at $1,000
Used Chevrolet Impala
796 Great Deals out of 34,383 listings starting at $799
Used Cadillac CTS
312 Great Deals out of 12,668 listings starting at $1,495
Used Jeep Grand Cherokee
846 Great Deals out of 68,675 listings starting at $864
Used Nissan Maxima
347 Great Deals out of 25,221 listings starting at $1,400
Used Chevrolet Tahoe
778 Great Deals out of 28,448 listings starting at $1,500
Used Honda Accord
811 Great Deals out of 81,609 listings starting at $899
Used Chevrolet Silverado 1500
2,298 Great Deals out of 155,159 listings starting at $1,395
Used Ford F-150
2,702 Great Deals out of 211,804 listings starting at $1,000
Used Chevrolet Malibu
1,007 Great Deals out of 85,671 listings starting at $1,995
Used Nissan Altima
1,090 Great Deals out of 82,556 listings starting at $670

Used Cars For Sale

2017 Chrysler 300 For Sale
5,853 listings starting at $24,195
2016 Chrysler 300 For Sale
74 Great Deals out of 4,022 listings starting at $16,679
2015 Chrysler 300 For Sale
20 Great Deals out of 1,448 listings starting at $14,990
2014 Chrysler 300 For Sale
73 Great Deals out of 2,562 listings starting at $9,900
2013 Chrysler 300 For Sale
42 Great Deals out of 1,321 listings starting at $8,999