Question about 2001 Chevrolet Blazer
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Posted on Jan 02, 2017
SOURCE: setting idle on 2001 blazer
there is no manual setting for idle speed it is computer controlled the only thing you can do is make sure the thottle bore is clean.good luck from schleck.
Posted on Sep 03, 2008
SOURCE: 1999 chev blazer 4x4 system
When you say that the 4wd won't engage, I assume you mean that the front differential is not locking in. If memory serves me correct there is a 3 port vacuum switch located on the top of the transfer case that gave a lot of problems. When the transfer case is shifted to a 4wd mode (high or low) this vacuum switch changes position and routes engine vacuum to the actuator located under the battery tray. This actuator then pulls a cable that move a fork inside the front differential that locks the front diff in 4wd. The vac switch gave a lot of trouble, but any broken vac hoses or differential internal mechanical issues could present as the same issue.
Posted on Nov 23, 2008
You should verify you have proper fuel pressure. Check with a gauge when cold and hot. Possible clogged fuel filter is not allowing enough gas to feed engine. Verify pressure at idle and also under load when driving.
Posted on Dec 06, 2009
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