I am getting a code P0125, I just bought this truck 2 weeks ago, it is 4wd 4dr 6 cyc
Well code 125 means the engine is not getting hot enough for the emission system to work. In most cases you need a new thermostat, but it could also be a faulty coolant temp sensor.
SOURCE: 2000 Blazer stuck in 4WD
The first thing I would look at is the shift rod on the transfer case. If I remember correctly, it is on the drivers side and is a rod aboutsix inches long and has two ends that basically pop into rubber gromets. If that rod is bent in any way, or has come loose of the gromets, it will not shift into or out of the four wheel drive. If yours has electronic four wheel drive, the electric acutator could be out or going out. you should be able to remove the rod and simply move the switch by hand on the transfer case. It will get you out of 4 wheel drive until you have the ime to diagnose the electronics at least. It has happened to both my 1994 and 1999 S-10 blazers.
SOURCE: Chevy Blazer P0303 and P0420
Most probably and if a cat is not flowing proper is causes back preasure that can result in sticking or burned vavles,mechanic not nice by saying ignore the cat effiency code p0420.Can ussually have cat replaced at aftermarket muffler shop for approx. $200 cheaper than valve job or excessive fuel that you have used and damage that may occur to your engine.
SOURCE: need the fuse diagran fo chevy blazer s10 4wd 1991
go to autozone.com, enter your vehicle specs, and follow the prompts for the repair section, then to electrical diagrams..........and its FREE!
SOURCE: I have a 2000 chevy blazer 4.3l engine\is backfiring
Start by checking each cylinder for spark with a good spark tester. A misifre is either spark or fuel, so you can cut the problem in half. The engine light is probably on due to the misfire.
SOURCE: I need a firing order diagram for a 1999 Chevy S10
1-6-5-4-3-2
Thanks for using FixYa.
Kelly
Brad
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