1991 Oldsmobile Bravada Engine timing

1991 OLDSMOBILE BRAVADA
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RAYMONDW
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Engine Performance problem
1991 Oldsmobile Bravada 6 cyl All Wheel Drive Automatic 80K miles

Are there any vacuum or other hoses that need to be disconnected and plugged when do engine timing on a 1991 Bravada?
Mar 16, 2009 at 7:46 PM
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DOCFIXIT
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Need to know if engine is 2.8L,3.1L or 4.3L
Mar 17, 2009 at 2:51 PM
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RAYMONDW
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4.3L
Mar 17, 2009 at 5:15 PM
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DOCFIXIT
  • ✓ASE Certified Mechanic
  • 18,828 POSTS
  • ASE Certified Mechanic
Disconnect Tan/Black Electronic Spark Timimg by-pass connector wire located near heater housing or near distributor or near electrical junction box cover, GM liked to move it around. DO NOT remove 4-wire connector to Dist. Time reconnect EST and clear ECM
Mar 19, 2009 at 8:17 AM
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