My alternator dies so we replaced and it had not ran right since

Asked by Feb 07, 2015 at 09:33 PM about the 2003 Chevrolet Blazer 4 Door LS 4WD

Question type: Maintenance & Repair

as soon as we changed the alternator on my 2003 trailblazer it has not ran right. It is very
sluggish when taking off. and it is using alot more gas. the fumes of gas fill the entire car.
i have replaced so far c02 censer camshaft censer coil packs plugs cleaned the cat
converter and the carb any suggestions the thing ran fine before the new alternator????

9 Answers


Is alternater putting out 14 volts


Try disconnecting the battery for a few minutes and see if it makes it any better

1 out of 1 people think this is helpful.

ok ill try that we did right after replacing the alt but have not since all the other things thank you

yes it is putting out 14volts



Have you had your check engine light read?

yes all the codes were misfire codes and thats why the censors were changes but now there are no codes comming up but still running bad tries to unhood battery to reset the cpu but that did not work either

I just changed my alternator and I am having missfires now the day after. And it is very rough at idle. Any help?

So, I have the same exact issue.

Your Answer

Add photo

Related Questions


Looking for a Used Blazer in your area?

CarGurus has 1,142 nationwide Blazer listings starting at $700.


Search Chevrolet Blazer Questions

Chevrolet Blazer Experts

#1 Andrew Olsen
Andrew Olsen
Reputation 1,940
#2 yetilikesbeer
Reputation 1,220
#3 Rowefast
Reputation 990
View All

Related Models For Sale

Used Chevrolet TrailBlazer
95 Great Deals out of 4,515 listings starting at $899
Used Chevrolet S-10
11 Great Deals out of 1,350 listings starting at $1,595
Used Chevrolet Tahoe
574 Great Deals out of 27,584 listings starting at $1,500
Used Chevrolet Silverado 1500
1,743 Great Deals out of 169,738 listings starting at $1,800
Used GMC Jimmy
264 listings starting at $2,495
Used Ford Explorer
816 Great Deals out of 74,893 listings starting at $1,200
Used Chevrolet Camaro
148 Great Deals out of 32,788 listings starting at $1,995
Used Jeep Grand Cherokee
1,057 Great Deals out of 73,967 listings starting at $950
Used Ford F-150
2,257 Great Deals out of 209,069 listings starting at $1,499
Used Chevrolet Suburban
347 Great Deals out of 19,083 listings starting at $2,295
Used Chevrolet Colorado
227 Great Deals out of 23,602 listings starting at $2,200
Used Jeep Wrangler
281 Great Deals out of 18,673 listings starting at $2,995