Engine RPM's - The 1947 - Present Chevrolet & GMC Truck Message Board Network

1984Silverado4x4 · 01-24-2009, 02:44 PM

My truck has a 305 with the stock Quadrajet on it and a 4spd transmission.
When I drive a vehicle with manual transmission I sort of expect the RPM to drop back to idle speed as soon as the clutch is disengaged. On my truck however when I disengage the clutch (depending on how fast im going, what gear im in, and engine temp) the engine will rev way up for a few seconds then settle down to idle. Couldnt tell you what it revs to as it dosent have a tach but I imagine 2500RPM or so.

It happens the worst when the engine is cold and im only doing 25mph in 2nd gear and come to a stop sign or something.

Anyone have ideas on why it would do this?

01-24-2009, 02:44 PM	#1
1984Silverado4x4 Registered User Join Date: Jul 2007 Location: Mount Horeb WI Posts: 179	Engine RPM's My truck has a 305 with the stock Quadrajet on it and a 4spd transmission. When I drive a vehicle with manual transmission I sort of expect the RPM to drop back to idle speed as soon as the clutch is disengaged. On my truck however when I disengage the clutch (depending on how fast im going, what gear im in, and engine temp) the engine will rev way up for a few seconds then settle down to idle. Couldnt tell you what it revs to as it dosent have a tach but I imagine 2500RPM or so. It happens the worst when the engine is cold and im only doing 25mph in 2nd gear and come to a stop sign or something. Anyone have ideas on why it would do this? __________________ Its no disgrace being poor. Its just inconvenient.



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