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

Asked by Jul 09, 2015 at 02:10 PM about the 1996 Chevrolet Blazer 2 Door LS 4WD

Question type: Maintenance & Repair

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 vehicleneed a variation relearn.

4 Answers

16,235

No, but it sounds like a fuel injector problem. Do you notice it run really rich? A pressure and leak down test will tell you if it is your problem.

I do not know but the exhaust has been smelling strong lately and these have weird poppet valve injectors. I just had that whole spider assembly under the intake replaced with an updated Delphi unit and a Delphi fuel pump installed. The whole problem started when the truck suddenly was hard to start, it cranked over like the timing was off. So I had a new distributor installed and that didn't fix the problem, and then it went on from there. I was told these blazers do not like any replacement parts but AC Delco and I thought that was just crazy that a vehicle could be that sensitive to replacement parts considering this is not a brand new vehicle. Then I was told it was the Bosch O2 sensors that were installed. Then it was the EGR valve, then the IAC valve. I wish I could nail this problem down.

16,235

Have the fuel pressure and leak down test done and go from there. All you need us a fuel pressure gauge. Your looking for 55psi and it shouldn't drop when the key is off

345

Is this a Federal or California build? It makes a big difference.

Your Answer

Add photo

Related Questions

Blazer

Looking for a Used Blazer in your area?

CarGurus has 1,381 nationwide Blazer listings starting at $1,699.

ZIP:

Search Chevrolet Blazer Questions

Chevrolet Blazer Experts

#1 Andrew Olsen
Andrew Olsen
Reputation 1,730
#2 yetilikesbeer
yetilikesbeer
Reputation 1,060
#3 dandyoun
dandyoun
Reputation 650
View All

Related Models For Sale

Used Chevrolet Tahoe
1,078 Great Deals out of 31,862 listings starting at $1,495
Used Chevrolet S-10
9 Great Deals out of 1,621 listings starting at $1,400
Used GMC Jimmy
312 listings starting at $2,750
Used Ford Bronco
221 listings
Used Jeep Grand Cherokee
1,137 Great Deals out of 69,559 listings starting at $495
Used Ford Explorer
1,413 Great Deals out of 72,564 listings starting at $985
Used Ford F-150
3,395 Great Deals out of 204,731 listings starting at $1,273
Used Chevrolet Camaro
647 Great Deals out of 39,348 listings starting at $2,995
Used Toyota 4Runner
387 Great Deals out of 20,057 listings starting at $2,995
Used Chevrolet Suburban
694 Great Deals out of 21,755 listings starting at $2,095
Used Chevrolet C/K 1500
3 Great Deals out of 1,029 listings starting at $1,999
Used Chevrolet Impala
945 Great Deals out of 36,275 listings starting at $1,800