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

237,115

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 of 1 people found this helpful.
345

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 19,882 nationwide 300 listings starting at $1,000.

ZIP:

Search Chrysler 300 Questions

Chrysler 300 Experts

#1 Jetlounge
Jetlounge
Reputation 1,730
#2 Eddie_G1
Eddie_G1
Reputation 870
#3 Whatisit
Whatisit
Reputation 820
View All

Related Models For Sale

Used Dodge Charger
398 Great Deals out of 28,096 listings starting at $1,988
Used Ford Mustang
459 Great Deals out of 45,641 listings starting at $1,999
Used Chevrolet Impala
578 Great Deals out of 31,558 listings starting at $799
Used Jeep Grand Cherokee
1,046 Great Deals out of 74,668 listings starting at $750
Used Cadillac CTS
195 Great Deals out of 10,837 listings starting at $1,795
Used Honda Accord
803 Great Deals out of 84,448 listings starting at $988
Used Nissan Maxima
314 Great Deals out of 25,099 listings starting at $999
Used Chevrolet Tahoe
564 Great Deals out of 28,965 listings starting at $1,699
Used Ford F-150
2,178 Great Deals out of 206,277 listings starting at $1,499
Used Chevrolet Silverado 1500
1,683 Great Deals out of 174,972 listings starting at $1,250
Used BMW 3 Series
978 Great Deals out of 31,676 listings starting at $1,000
Used Chevrolet Malibu
907 Great Deals out of 79,544 listings starting at $1,500

Used Cars For Sale

2017 Chrysler 300 For Sale
5,288 listings starting at $21,947
2016 Chrysler 300 For Sale
121 Great Deals out of 3,909 listings starting at $15,979
2015 Chrysler 300 For Sale
32 Great Deals out of 1,389 listings starting at $13,750
2014 Chrysler 300 For Sale
66 Great Deals out of 2,362 listings starting at $6,900
2013 Chrysler 300 For Sale
26 Great Deals out of 1,165 listings starting at $8,900

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.