× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for September 13, 2020
International Automotive Technicians' Network (iATN) - Members Only
Next
(Also Available: All, Asian, Chrysler, European, Ford, GM.)
Vehicle Owners: If you are seeking an automotive repair professional to service your vehicle, visit the iATN Repair Shop Finder.

Open Help Requests for GM
Help Request Answers

Fixes & Summaries for GM
Fix/Summary Answers
1994 Chevrolet Blazer 5.7L Poor Idle Quality VIN: 1GNEK18K9R
Thank you all for your assistance. We did try another rebuilt distributer and rechecked timing. Also cleaned ground at T-stat housing. Tried 20 hg with test pump on MAP during cold start. No change in performance. Still runs rich (rough idle) cold for about... Trouble codes: 33 (MAP sensor).
22
Prev (Also Available: All, Asian, Chrysler, European, Ford, GM.) Next