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Pickups Chevrolet S-10 & GMC S15 Sonoma Chevy S10 - GMC S15 and Sonoma Vibrations
35 messages, Last post on Aug 16, 2009 at 8:26 AM
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Replying to: bstep1971 (Sep 04, 2007 3:26 pm)  FINALLY, NO MORE VIBRATIONS!
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I have a 1994 S10 pickup with the 4.3 engine. I have noticed recently that when the engine is cold I can feel vibrations coming from the engine compartment. I have replaced the IAC valve, but it still is rough til it warmsa up. broken engine mount? No vibes at higher rpms. Idle speed is about 850-900. Any suggestions. c-denver cox.net
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Replying to: cdenver (Nov 07, 2007 10:02 am) Pre loosen all plug wires, start it up and lift off each wire from the plug to see if RPM drops. If RPM does not drop, there is your dead plug, wire, or bad valve. As the engine warms, the valve may make a better seal, as it does when revved up. Swap out the wire to a different plug to see if condition follows it. An OHM meter will verify the wire. A compression test will verify valve, even better is a Leak Down Tester. This tool will show you where the air is leaking from when both valves are closed. The air will escape out 3 possibilities, the oil fill - Bad Rings, the exhaust pipe - bad valve, or the intake at the throttle - Bad Valve. This tool requires an air compressor and piston at top dead center on compression stroke. You didn't mention how many miles. Mine has 177,000 and does not burn any oil and runs perfect. That's from being very fussy about it all like racing. |
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| I am trying to remove the dirvers inside door panel to replace the mirror and cannot get the panel off due to the door opening handel. anyone know how to remove the panel? | |
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I own a 2000 s10 extreme it has a bad vibration in all speeds i checked the U joints and they seem tight to me and it has a fresh tranny rebuild i raised the rear of the truck to check the rear end on the passenger side of the truck i can grab the tire and it moves in and out anywhere from an eighth to a quarter inch the drivers side is tight Does this mean the axle bearing on the inside needs replaced and could this be the cause of the vibration?
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Replying to: david23we45 (Feb 07, 2008 4:07 pm)
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Replying to: bstep1971 (Sep 02, 2007 7:29 pm) |
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| I just bought a 2003 GMC Sonoma and it had a constant vibration when I tested it. The dealer replaced the u-joints and hanger bearing and had the shaft extension put in and balanced. That seems to have reduced the vibration considerably however, I still have a vibration when accelerating from a stop and it is slightly detectable at under 100 KPH. That's about 50 MPH. The rear end was lubed as well. Any suggestions?"> | |
I have a 93 GMC Sonoma 2.8ltr, and i have no power from the grey wire to my fuel pump. i have tested the wire from the fuel pump relay, and i have power. i have been told that it is the oil pressure switch. i was also wondering if anyone knows where i can find the fuse box diagram online. If anyone has any info please email me at richardKoonhotmail.com
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Replying to: ohiaboy (May 29, 2008 11:14 pm) I would suspect where they connect, most logical is at the switch. If the pressure switch has one wire on one side and 2 wires on the other, the 2 is the connection. If not, good luck looking. The pressure switch has nothing to do with your current problem except the 2 wire connection.
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