Sputtering car what could it be?

Asked by Dec 09, 2015 at 03:28 PM about the 2003 Buick LeSabre Custom

Question type: Maintenance & Repair

Car was running fine going down the road all of a sudden it started sputtering
real bad so far I have replaced plugs,wires,o2 sensor, crankshaft sensor, fuel
filter , coils and module, still sputtering bad will start when cold but after that
car is hard or don't start please any help would be great , Thanks

5 Answers

35,225

I suspect a fuel delivery problem. Run a couple of tanks of gas with a good fuel system cleaner like Seafoam or Chevron Techron concentrate.

1 out of 1 people think this is helpful.
78,545

As it starts and runs cold but starts to fail when warm it could be a sensor sending the wrong signal at operational temps, I would suggest have a "live data" scan performed, that should tell you what sensor is out of specs. There may not even be a check engine light cause the ECM sees a signal that is within the proper range for operation, but incorrect for operational temps. I had an Impala in my shop that was doing something similar, it wound up being the ECT sensor, as it warmed up it would show that the engine was getting colder, really fouled up the way it would run warm. HTH

1 out of 1 people think this is helpful.

Thanks guys for responses will get scan and will let you know Thank You very much .

16,435

Make sure you don't have any vacuum leaks around the PCV valve too. If it looks plugged replace the PCV valve.

1 out of 1 people think this is helpful.

Hi guys car still sputtering does it when it's cold or hot like I said changed wires plugs crank sensor, cam sensor, vss, coils, module, could it be fuel pump?

Your Answer

Add photo

Related Questions

LeSabre

Looking for a Used LeSabre in your area?

CarGurus has 2,368 nationwide LeSabre listings starting at $1,768.

ZIP:

Search Buick LeSabre Questions

Buick LeSabre Experts

#1 Tom Demyan
Tom Demyan
Reputation 1,870
#2 John Saffrahn
John Saffrahn
Reputation 1,540
#3 POPEYE99
POPEYE99
Reputation 1,350
View All

Related Models For Sale

Used Buick Park Avenue
502 listings starting at $3,975
Used Buick Century
1,091 listings
Used Chevrolet Impala
996 Great Deals out of 36,810 listings starting at $1,800
Used Buick Regal
208 Great Deals out of 11,280 listings starting at $1,995
Used Toyota Camry
1,523 Great Deals out of 101,602 listings starting at $700
Used Cadillac DeVille
1,963 listings starting at $1,600
Used Honda Accord
1,263 Great Deals out of 78,832 listings starting at $969
Used Ford Taurus
364 Great Deals out of 22,720 listings starting at $1,499
Used Mercury Grand Marquis
32 Great Deals out of 2,236 listings starting at $1,500
Used Chevrolet Malibu
1,157 Great Deals out of 80,725 listings starting at $2,495
Used Pontiac Bonneville
4 Great Deals out of 666 listings starting at $2,298

Used Cars For Sale

2005 Buick LeSabre Custom For Sale
6 Great Deals out of 274 listings starting at $1,768