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02-10-2015, 01:00 PM
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#4 |
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Registered User
Join Date: Sep 2009
Location: Beaverton, OR from WA State
Posts: 1,515
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Re: 99 454 rough idle
Sounds like you need to test the fuel pressure as well. Need to test with key on engine off and key on engine running, the latter preferably with it hot to duplicate your poor idle condition.
Also, I see this thread and your tensioner thread are in the wrong areas of the forum. The more correct area is the one prior to this one. Your '99 Suburban is still the GMT-400 platform which technically ran to 2002, the years are really general guidelines. I always suggest that people post within their bodystyle of vehicle.
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Devin 1983 GMC High Sierra 2500, 4x4, RC/LB, 400 S.B., SM-465, NP-208, Corporate 10 bolt & 9.5" 14 bolt 1996 GMC Sierra SLE 3500 DRW, 4x4, EC/LB, Vortec 454, NV-4500, BW-4401, AAM 925 & AAM 1050 1997 GMC Sierra SLT 1500 4x4, Z71/F44, EC/SB, Vortec 350 My Introduction with my '83s History New Daily, the '96 |
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