rough idle on 95 s10 blazer 4.3 vortec vin w

Asked by Jan 07, 2016 at 08:21 AM about the 1995 Chevrolet Blazer 4 Door LS

Question type: Maintenance & Repair

Will a bad knock sensor cause
rough idle & black smoke come
out the tail pipe if u rib up the
engine it dont have mass air flow
sensor r crankshaft sensor it runs
good when I first crank it after it
warms up it starts rough idle

1 Answer

18,275

Check fuel pressure and leak down to rule out the fuel system. Is the check engine light on?

Your Answer

Add photo

Related Questions

  • 95 s10 blazer 4.3 vortec vin w rough idle 1 answer

    I'm still working on my 95 s10 blazer 4.3 vortec vin 4 it is idling rough & fouling plugs with black Sutt but is will rib up acts like the mass air flow sensor but don't have one I changed the o2...

    1995 Chevrolet Blazer 4 Door LS

    -

    Maintenance & Repair

  • repair on 95 s10 blazer 4.3 vortec vin w 2 answers

    Truck will not stay running it is wetting the spark with gas but has 60 psi of fuel pressure has anyone had this problem please help me with this problem

    1995 Chevrolet Blazer 4 Door LS

    -

    Maintenance & Repair

  • 1996 chevy blazer with a 4.3 vortec Vin W has a flash reprogramming eccs? 1 answer

    how can you tell if a 1996 chevy blazer with a 4.3 vortec Vin W has a flash reprogramming eccs?

    1996 Chevrolet Blazer 2 Door LS 4WD

    -

    Maintenance & Repair

  • Does the CKP sensor on a 1996 chevy blazer need a variation relearn 4 answers

    My mechanic recently replaced the CKP sensor on my 1996 chevy blazer with the 4.3 vortec (Vin W) and my vehicle is still running badly, no power, misfires, bad fuel milage. Does the CKP sensor on this...

    1996 Chevrolet Blazer 2 Door LS 4WD

    -

    Maintenance & Repair

  • 96 blazer 4.3 swap 4 answers

    Just wondering if a 97 or 98 4.3 will bolt and wire up as a direct replacement for the 96 that's locked up.it is 4wd and vin w...thanks Pete

    1996 Chevrolet Blazer 4 Door LT 4WD

    -

    General

Search Chevrolet Blazer Questions

Chevrolet Blazer Experts

#1 Andrew Olsen
Andrew Olsen
Reputation 1,970
#2 yetilikesbeer
yetilikesbeer
Reputation 1,300
#3 Rowefast
Rowefast
Reputation 1,030
View All

Related Models For Sale

Used Chevrolet Tahoe
550 Great Deals out of 29,235 listings starting at $1,699
Used Chevrolet S-10
10 Great Deals out of 1,345 listings starting at $1,395
Used GMC Jimmy
257 listings starting at $2,495
Used Ford Bronco
196 listings
Used Ford Explorer
944 Great Deals out of 72,519 listings starting at $1,000
Used Jeep Grand Cherokee
1,027 Great Deals out of 74,887 listings starting at $750
Used Ford F-150
2,194 Great Deals out of 206,316 listings starting at $1,499
Used Chevrolet Camaro
225 Great Deals out of 30,943 listings starting at $1,217
Used Chevrolet Suburban
323 Great Deals out of 19,720 listings starting at $2,000
Used Jeep Wrangler
277 Great Deals out of 18,163 listings starting at $2,950
Used GMC Yukon
376 Great Deals out of 18,226 listings starting at $2,950
Used Chevrolet C/K 1500
892 listings starting at $2,500

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.