Are you sure? I do not see a O2 relay on my 2000 Durango 4X4 SLT but I know I have a rad fan relay as well as ( actually I will need to see for sure if I have a Tranny Relay or not, I know this post is a bit old but may help someone now that has similar issues. As far as dies when you gas it at a stop sign then will not start again?? could you elaborate as this is way to Vague to allow me to have any decent info to tell you and I hate it when people answer and seem to have only read 2 words out of a 100 word paragraph. Like asking where the fuel filter is located and how to properly and safely replace it and someone says Mechanic or goes on talking about the octane and fuel cap and nothing remotely about the OP ?? other then maybe the WORD Fuel.
SOURCE: 2000 chevy silverado 1500 4.3 eng
Chevy Trucks, Blazers, S10 pickup and the like will vapor lock ecspecially the 2000 models. Do not tighten the gas cap past 1 click. There is a tube that runs from the top of the tank down and this gets hot and collapses or burns in half. We just bought a reinforced rubber tube cut it to lengh and use it instead of part and it's worked grat for 2 years so far.
SOURCE: truck dies when i stop or slow down
Here is the most common cause of surges and stalls and low idle rough idle, it is the idle speed control air-bypass valve and throttle valve (IAC for short), they get full of gunk over the miles and cause idle issues (stalls, low idle) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake.
SOURCE: On my 2000 chevy S-10 ZR2, speed 4 of my fan stopped working
It's not the motor, if you have replaced the resistor/relay and that didn't work then it is likely the switch.
SOURCE: 1994 f-350 7.3 turbo diesel.tach reading 0 rpm's at idle speed.
yea the 93 to 95 trucks never had a tach that works very long
and first the Tach does not make the od light blink or ck engine lgt
the crank trigger does this little thing is located right in middle front of engine between the vac pump and pwr steering pmp looks like a brass bolt with wires comming out of the back of it costs about 30 bucks (don't forget the locktite blue)
now that should fix the od lights and the ck engine but it may not fix the tach thats done in the tach driver module on back of tach in dash
you can replace this but my vote it's too expensive I did mine just fine with a after market one(50 bucks), bolted it right in front of old one, it hooks up super easy gets it's signal off the alternator stator
im sort of suprized it starts ok with a bad crank trig (eec needs to see +50 rpm to start fuel flow to injectors )
any good shop with a eec scanner can see this in just seconds
SOURCE: 06 silverado blower fan won`t shut off finally killed battery
The connection at the blower resistor on these model years had problems with poor connections.
The increased resistance on the terminals caused them to heat up and burn. Some would go open circuit and not work at all and some would short to ground and run all the time, like yours.
As you have already discovered, you will need to replace the pieces.
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