3.1 "chugging" from 1500 to 2500rpm
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Junior Member
Joined: Sep 2010
Posts: 47
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3.1 "chugging" from 1500 to 2500rpm
My sons 92 Firebird, it has the 3.1l in it. The car will start to "chug" between 1500 and 2500 rpm. When I push the pedal to the floor it doesn't do it, only at part throttle. I've replaced the Fuel Injectors (new set from Southbay), Coil, ICM, Cap, Rotor, Plugs, and Wires. The car doesn't throw any codes. Doesn't smoke or smell funny. The engine just isn't happy. I cant find any vacuum leaks- and it only doesn't it under a load. When it starts to chug, if you put it in neutral the car revs just fine.
Any ideas what I should check or replace?
Any ideas what I should check or replace?
Member
Joined: Jan 2013
Posts: 396
Likes: 10
From: AL
Car: 1985 Firebird
Engine: 3.4 turbo
Transmission: Auto
Axle/Gears: 3.42
Re: 3.1 "chugging" from 1500 to 2500rpm
when you're pushing it to the floor to make it stop chugging , is this going down the road, as in under load?
Member
Joined: Oct 2007
Posts: 413
Likes: 1
From: O'Fallon Mo.
Car: 1992 Camaro
Engine: HSR 355, afr 195s, xfi280, Holley e
Transmission: t-5
Axle/Gears: Braced 10 bolt Auburn and 3.73s
Re: 3.1 "chugging" from 1500 to 2500rpm
I'd avoid working with or helping this guy out at all costs. Nothing but a crook. Stole money from me several years ago and vanished.
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