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Nope, not what I meant to say.
Emissions equipment on our trucks include the EGR (Exhaust Gas Recirculation System), PCV (Pollution Control Valve, or ventilation system), and catalytic converter. That's it on the 22RE. On 22R trucks you can add what is commonly known as the Smog Pump, or Manifold Air Injection System.
None of these deal with fuel management, but rather cleaning up the exhaust after the fact. These systems are frequently identified as being power robbers, and deleted by owners in non-smog nazi states in a process affectionately known as "de-smogging."
The Ox sensor is part of the EFI fuel delivery system. Unfortunately, some folks think is an emission device and do something stupid with it. I see your point that anything that improves fuel delivery also improves emissions. But the bottom line is the Ox sensor is not part of the emission system.
Also, for chuckles … California 22R engines had an Ox sensor. Go figure. If it failed it messed with fuel delivery somehow to the carburetor and the truck would fail CA smog. BTDT.
I have also found a sensor just in front of the cat so I am going to replace it also.
The o2 should be roughly under the drivers seat.
1989 has one O2 if its federal, not sure about California and it was before the cat. The wire it connects to runs down with the transmission harness if you have an auto.
well, unfortunately there has been way to many fingers under the hood of this truck. The previous owner told me that the exhaust manifold had to be replaced. There are three bolts that hold the heat shield on and two of them have been broken off. I think if it was replaced it was a used one and not new. I am unable to fine where the sensor that is in the exhaust manifold plugs in. I am thinking that some one has cut the plug off and i am going to have to find out where it is . I have also found a sensor just in front of the cat so I am going to replace it also. This has really turned in to a bucket of worms.
TYM4FUN, There is no report, They put the sniffer in the tail pipe and got a reading the was very high with unburned fuel and said it would not pass.it was only in the bay for a very few minutes. They suggested that it might be the map sensor but it does not have one, possibly the O2 sensor but the check engine light is not on, and possibly the cat. I have been talking to a mechanic at the local Toyota dealer and he suggested that it might be that the throttle positioning valve is stuck in the full open position and that the computer would not since that so the check engine light would not be on.
I don't want to start changing out parts that may be good but that may be what I have to do. I am thinking that change the cat, O2 sensor, and the throttle positioning valve and that might fix it. Any Ideas?
TYN4FUN, Here is my problem. I live in the second largest county in CA. roughly 1 3/4 persons per SQ Mile, about 20,000 people total. There are two smog ck stations in the hole county. One charges $94 for a ck and there is a wait time of 4 to 5 Weeks. The other charges $100 for a precheck and $150 for test with cert. nether have free rechecks. They are 15 miles away. The shop I took it to Did not charge me as they did not really ck it other than put the sniffer in the tail pipe and get a reading.They charge $65. I have used them before and have been very happy with them. Even with the miles and cost of fuel it has been cheaper that doing business with the bandits 15 away. They are 125 miles away. The only Star Certified Smog Check stations are 250+ miles away. I think I will have to take it back to where I took it and get a readout. any thoughts?
Mudder, This is a old truck and it does not have a port to plug in to. When the CK engine light is on you have to get a set of blinking lights and count them to get a code, so no light no code.
Mudder, This is a old truck and it does not have a port to plug in to. When the CK engine light is on you have to get a set of blinking lights and count them to get a code, so no light no code. The exhaust manifold had been changed and I believe that they got a used one from a wrecking yard and put it on and it has the O2 lsensor in it because it came off a certified CA truck. my truck is a federal compliant and not a CA compliant vehicle. The Federal compliant have only a o2 sensor in front of the CAT where as the CA have a O2 in the exhaust man. and before the CAT.
OK guys, two different things. @GaryJohn is correct, there is no OBDII port under the dash. @Mudder is also correct that there is a diagnostic box under the hood off the fuse block, but it's not a "port." Just a little box you short out TE and E1 with a paperclip that will cause the CE light to flash. Count the flashes, get the trouble code. Primitive, but it's what we have.That is false. I owned an 1989 22re pickup. And haveswapped all the old wiring into my 84 pickup. There is a port under the hood next to the fuse box that says diagnostic in it. Jump the TE and E1 terminas and the check engine light will either blink at a constant rate (no code) or blink pause and blink again a certain number of blinks to give off codes. I had a GPS code and my MIL never went off.
Toyota Tech - Diagnostic Trouble Codes
www.4crawler.com
yesI am guessing you live in Inyo County then? Close to TJ's Firing Line?
That is false. I owned an 1989 22re pickup. And have swapped all the old wiring into my 84 pickup. There is a port under the hood next to the fuse box that says diagnostic in it. Jump the TE and E1 terminas and the check engine light will either blink at a constant rate (no code) or blink pause and blink again a certain number of blinks to give off codes. I had a GPS code and my MIL never went off.
Toyota Tech - Diagnostic Trouble Codes
www.4crawler.com
That is false. I owned an 1989 22re pickup. And have swapped all the old wiring into my 84 pickup. There is a port under the hood next to the fuse box that says diagnostic in it. Jump the TE and E1 terminas and the check engine light will either blink at a constant rate (no code) or blink pause and blink again a certain number of blinks to give off codes. I had a GPS code and my MIL never went off.
Toyota Tech - Diagnostic Trouble Codes
www.4crawler.com
One dude job. Insert paperclip. Go have a seat. Beverage is optional.So when you jump the box does someone need to be inside while doing this or does it keep repeating? I am asking if this is a two man operation or just one. I really would like to get this figured out