Question about 1999 Chevrolet Tahoe
Service engine light would come on and flash if i got over 2000 rpm, seems to not be running on all cylinder's, this sudden change leads me to think it may be some kind of sensor but im not sure.
Well don,t hit bumps then,Check that all the spark plugs wires are on tightly.
Posted on Oct 29, 2012
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Posted on Jan 02, 2017
SOURCE: Rough running and rough idle
Doesnt sound at all like an electrical control issue... more like a tune up...
How many miles? If its hard to start its typically due to spark plugs being worn down with age.. that engine has individual coils per cylinder so there are no "cap, rotor or wires" involved... just replace the plugs, they are platinum and they are about 8-9$$ each x8... but that is what you need
Posted on Nov 25, 2008
Could be a short in the wiring for the O2 sensor. I currently have the same issue only my car finally threw a code after two days of it acting up. Code 106. Changed the MAP sensor and it now throws 108, MAP sensor high voltage circuit. Ah the joys of cold weather and broke down vehicles. But I know that you wont always get a code with a short. Let me know if you fixed the problem.
Posted on Jan 08, 2009
you may have to drive it several days for the light to go off, or have the codes cleared. personally I would just drive it. if the computer tests it, and it passes the test, it will go off on its own.
Posted on Sep 21, 2009
Hi, the 4.3 liters have an injection system on them that can leak and will show up as a misfire. it is common but elusive to find. you might consider taking the van to a repair shop to have the problem diagnosed and go on from there.
Posted on May 22, 2010
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