What is this noise?

10

Asked by Oct 20, 2016 at 05:55 PM about the 2005 Dodge Stratus SXT

Question type: Maintenance & Repair

Got a 2005 Dodge Stratus 2.7L. The check
engine light has been on for about a year
now with knock sensor reading. About a
month ago, the coolant air bleeder popped
off while I was driving on the highway, I
pulled over immideatly becuase I saw
smoke. After the car was towed home, I
replaced the unit myself and afterwards
added oil as I noticed it was low. When I
started the car back up, I heard a
thuddering, knocking type noise coming
from the lower side of the engine. Since
then I have driven the car seven or eight
times with no problem. I notice the noise
when the car starts, when i accelerate, and
if i have been driving it for more than a half
hour. The car also stalls a lot when I
reverse, especially when i have been
driving it for a while. Keep in mind i am not
a good mechanic at all, so I may have
messed up when replacing the air bleeder
(i follwed a youtube video). What could this
noise be?

4 Answers

88,655

Sounds like a loose rod bearing, the knock sensor may have been picking this up long before you could hear it, that's maybe why the light, nothing the computer changed would change the sound so it set the light and code, it may also be trying to retard timing, and that could cause your dying out when you change gears. If it is a rod bearing it won't last long if you continue to drive it, if your going to keep the car then fix it right away before it flys apart and ruins the engine completely.

2 out of 2 people think this is helpful.
Best Answer
62,855

Sounds like a bad knock sensor. If the noise is constant then, as tennisshoes said, it's probably a worn bearing. Do you have very low oil pressure at idle? Another worn bearing symptom. Since you have the code for the knock sensor I'd replace it and see if the noise goes away. If not, it's probably a bearing. HTH. -Jim

1 out of 1 people think this is helpful.
10

Very interesting. Yes the oil light comes on when the car is idle, also about six months ago it is as if it takes longer for the car to start (i have to turn the key more and for longer). Is this in anyway connected to the air coolant bleeder popping off? The entire top half of it just unlatched. What do you think the car is worth now at 160k miles? I assume its not worth much anymore and the repair is not worth it. Also is there a way I can test if it is the knock sensor or the loose bearing?

1 out of 1 people think this is helpful.
62,855

Since you're having an oil pressure problem at idle in addition to the knocking it's going to be a bearing. If the knock sensor isn't too expensive you can replace it just to be sure. But 9 times out of 10 a knock with low oil pressure at idle is a bearing. HTH. -Jim

1 out of 1 people think this is helpful.

Your Answer

Add photo

Related Questions

Stratus

Looking for a Used Stratus in your area?

CarGurus has 850 nationwide Stratus listings starting at $1,800.

ZIP:

Search Dodge Stratus Questions

Dodge Stratus Experts

#1 Tom Demyan
Tom Demyan
Reputation 1,020
#2 Chris Daigle
Chris Daigle
Reputation 590
#3 curry22
curry22
Reputation 530
View All

Related Models For Sale

Used Chrysler Sebring
23 Great Deals out of 2,968 listings starting at $1,395
Used Honda Accord
685 Great Deals out of 81,559 listings starting at $1,200
Used Dodge Charger
248 Great Deals out of 27,347 listings starting at $1,997
Used Nissan Altima
762 Great Deals out of 77,505 listings starting at $470
Used Ford Focus
544 Great Deals out of 55,232 listings starting at $500
Used Dodge Neon
713 listings
Used Chevrolet Impala
618 Great Deals out of 29,204 listings starting at $1,300
Used Toyota Camry
873 Great Deals out of 91,060 listings starting at $1,300
Used Nissan Maxima
274 Great Deals out of 25,881 listings starting at $2,589
Used Chevrolet Cobalt
39 Great Deals out of 3,973 listings starting at $1,700
Used Honda Civic
511 Great Deals out of 80,666 listings starting at $558
Used Chevrolet Malibu
800 Great Deals out of 88,548 listings starting at $1,900
Used Ford Fusion
979 Great Deals out of 78,006 listings starting at $1,000