chugging like a damn train
Thread Starter
Instructor
Joined: Jul 2017
Posts: 100
Likes: 6
From: Tucker GA
chugging like a damn train
Hey all,
My 03, 71K miles, has developed a "chug" from the engine. Oil pressure, idle, and power all read/feel perfect, fuel economy is on par, so I dont suspect misfire. It only happens under load, sounds like a freight train. Just fyi put in 6.5 Qs of Fresh 5w30 mobile one. The balancer had gotten to the point where tensioners are humming, but I don't know any correlation. Any clues out there?
My 03, 71K miles, has developed a "chug" from the engine. Oil pressure, idle, and power all read/feel perfect, fuel economy is on par, so I dont suspect misfire. It only happens under load, sounds like a freight train. Just fyi put in 6.5 Qs of Fresh 5w30 mobile one. The balancer had gotten to the point where tensioners are humming, but I don't know any correlation. Any clues out there?
Moderator, Tech Contributor
Joined: Sep 2013
Posts: 15,615
Likes: 4,063
From: Cape Coral, Florida
How about pulling codes first through the DIC if you can...this may put you into the right “diagnostic funnel” as a they say...this “chugging” can be the result of numerous items !!...you can disconnect the MAF sensor and see if it still chugs...can be dirty air filter, fuel filter, fuel pump, O2 sensor issues...without a scan tool and some diagnostic equipment you’ll just be guessing at this point !!
Last edited by C5 Diag; Apr 15, 2019 at 07:38 PM.
Thread Starter
Instructor
Joined: Jul 2017
Posts: 100
Likes: 6
From: Tucker GA
How about pulling codes first through the DIC if you can...this may put you into the right “diagnostic funnel” as a they say...this “chugging” can be the result of numerous items !!...you can disconnect the MAF sensor and see if it still chugs...can be dirty air filter, fuel filter, fuel pump, O2 sensor issues...without a scan tool and some diagnostic equipment you’ll just be guessing at this point !!
