Question about 1993 Chevrolet Suburban

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Truck ins chugging or missing at 40 mph - 1993 Chevrolet Suburban

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1 fuel filter 2 f pump 3 tuneup

Posted on Dec 10, 2009

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05 trailblazer chugs at 48 mph


Hi, what do you mean by chugs at 48 mph ? Doesn't it go any faster then 48 mph, does it lose power, bog down when you press the gas pedal to the floor. Does it have a misfire , that makes the vehicle buck and jerk ! Is the check engine light on or any other lights for that matter ? How many miles are on this trailblazer ?

Nov 06, 2014 | 2005 Chevrolet TrailBlazer

1 Answer

2006 Buick Lacross chugs between 40 and 50 MPH, I can't tell if its the engine or the transmission.


Did you check for OBD Codes?

Check & test the battery?

Look at all data on a road test?

Either the exhaust converter is clogged
You have little fuel pressure
Or a dozen other possible issues

Aug 31, 2014 | Cars & Trucks

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This Jeep starts missing (chugging) at about 45 mph. What would cause that? Replaced plugs etc.


run the fault codes. check the serviceability of the cat converter as it may be broken inside and blocking the exhaust

Aug 11, 2014 | 1994 Jeep Wrangler

1 Answer

My engine is "chugging" when I reach between 40 - 50mph


use a scan tool?
got DTCs? errors.?

motto: scan first , wonder 2nd.
is chugging misfire?

Feb 26, 2014 | 2006 Jeep Grand Cherokee

1 Answer

Chugging at 50 to 60 mph


if its a petrol get coil packs cheked does it do it under load mor when accelarating ir pulling up hill this would cause it to miss

Sep 24, 2012 | 2004 Jeep Grand Cherokee

1 Answer

1997 Oldsmobile Achieva - check engine light is on and car is running sluggishly...brand new motor installed 6 weeks ago.


What speed are you going when it chugs?
It could be as simple as a bad spark plug or a spark plug wire/boot grounding out.
When spark plug boots get old, the rubber cracks and lets voltage arc out the side and to the engine instead of through the plug.
This will be most noticeable when trying to maintain a speed of over 40 mph, or under mild acceleration.
The reason for being noticeable at this speed/acceleration level is that the transmission torque converter will be locked, transferring the vibration from any engine miss straight through to the wheels.

Jan 07, 2012 | 1997 Oldsmobile Achieva

1 Answer

When u get to 35 or 40 MPH the car starts chugging. We replaced wires- throttle censor.temperature heat censor.map censor. What else could be the problem?


I see you like replacing computer sensors. Did anybody try something really high-tech like performing NORMAL MAINTENANCE? You know, high-tech stuff like replacing a fuel filter?

Nov 16, 2011 | 1992 Chevrolet Lumina

1 Answer

I have a 90 Pontiac 6000 that starts just fine everytime, but it misses and shutters when I accelerate. once it's up to speed it runs great and at low speeds ie. 30 - 40 mph it runs great. it just misses...


Check your transmission lock-up. It's programmed to come in at at 40mph. You can replace the lock-up to come in at 60mph or better.
Or you may have some ignition wires going bad or distributor cap has crack in it.

Aug 16, 2009 | 2006 Pontiac 6000

1 Answer

Missing at 40-50 MPH


are you sure it is a miss and not a shutter or transmission kicking in and out?possible cause could be tps sensor losing signal at this spot is check engine light coming on?

Dec 15, 2008 | 2004 Chevrolet Tahoe

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