Thread: high idle
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Old 07-28-2004, 09:43 AM
95silverado 95silverado is offline
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That's not normal. I just started my 95 up (cold start) and it idled at 1200 for about 15 seconds, then dropped to around 950 for about 2 minutes, then dropped to about 600. Check for a vacum leak. The line from the throttle body to the pvc valve split on my truck and caused a high idle. The diaphram in the power brake booster can cause high idle also. hope this helps.
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