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02-09-2015, 11:43 AM
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#1 | |
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AF Newbie
Join Date: Feb 2015
Location: smithfield, Virginia
Posts: 2
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95 G20 5.7L Runs rough on second start
This van runs great when first started and continues to run fine until its turned off and restarted. When first started vacuum at idle is steady at 21 and 10 at 55mph cruising speed. After parking for 10 to 20 minutes and restarting idle is still steady at 21 vacuum but the van hesitates on acceleration and runs rough at cruise with a 5 vacuum. If I continue to drive I get low vacuum trouble codes for the MAP and Oxygen sensors. Ive replaced the oxygen sensor and performed a diagnostic on the MAP sensor which checks out ok. Ive checked for vacuum leaks none found. Does anyone have a suggestion on what to look at next?
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03-15-2017, 06:43 AM
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#2 | |
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AF Newbie
Thread starter
Join Date: Feb 2015
Location: smithfield, Virginia
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Re: 95 G20 5.7L Runs rough on second start
Tank fuel pump was at 6psi, replace pump now fuel line pressure is up to spec of 12psi. Van is back to running great!!!!!!!
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