89 5.7 tbi running rich - Chevy Message Forum

Username	Post: 89 5.7 tbi running rich
Shepherd Valued Contributor Posts: 2842 Loc: Lake George, NY Reg: 11-11-15	12-14-22 02:20 PM - Post#2851261 In response to J-dawg 46 Have you check the vacuum at the map sensor hose? Also when scanning look at what the pcm sees for barometric pressure. Hmm, 89 obd1 may not have that function. Edited by Shepherd on 12-14-22 02:22 PM. Reason for edit: No reason given.
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