They have different plug connectors, so they can only go in one, hard to screw up when they make it easy for a change.
Awesome, thanks!
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They have different plug connectors, so they can only go in one, hard to screw up when they make it easy for a change.
Hhmmm, wish I had my old o2's to try and clean them... I replaced with Bosch plane styled sensors after reading a long thread here on mud. I immediately noticed better mpg, slightly lower highway rpms, and my CEL disappeared, but since the install have a weird almost stall like hesitation when first accelerating after my truck has sat and is cold. Doesn't matter what gear I try to accelerate in, or if I leave straight from start or letting the truck completely warm up, still have a weird hesitation. That being said, did a quick search online and just ended up impulse buying these off eBay
http://m.ebay.com/itm/290836724529?nav=SEARCH
Brand new Denso 234-4520 sensors for $69.95 with free shipping. Only a few left if any of you 93-94 guys want to save some $$$.
I have a 94 as well and need to replace my sensors. If these are the right ones I am going to pull the trigger. For the 94, are both sensors the same part number? I thought I read earlier that they where two different part numbers for each one.
IIRC the earlier year FZJ's had NTK/NGK O2 sensors as OEM, don't know if it makes a difference??
Installed and they're working perfect. Same part number as they're are the same sensor, just takes two of them. Luckily not much rust on my truck so it was quick and easy install.
Sent from my iPhone
Denso Part No. 234-4156 upstream $64 and Denso Part No. 234-4153 downstream @$62.
For the people searching: WRONG 234-4156 WRONG.
I thought I should bump this thread because, from my research and testing, the correct upstream Denso O2 sensor is 234-4157.
I had the wrong one in my truck and still suffered intermittent codes. Putting the correct one corrected these. Plus, the lead on the correct one is a little shorter, thus preventing it from flapping around.
A.
The million dollar question? Replace ($$$) or Clean your O2 sensor .
Replace the oxygen sensor only if it's bad. They do wear out and the FSM, Chilton's or Hayne's manual for your car should have directions on how to test it.
An OEM replacement sensor for some popular cars is about $240, and your car probably has two of them. If you replace it with a cheap sensor from a discount parts store, you may be throwing away a perfectly good high quality sensor which just needs to be cleaned.
Here's a quote from a Toyota mechanic with 32 years of experience, on another web site:
"You don't need to replace them, remove them and clean them. [If you read an O2 sensor malfunction code] The computer is saying the vehicle is running a little rich or lean. IT DOES NOT mean the sensor(s) are bad. Auto parts stores just want to sell you products. If I received a dollar every time a 02 sensor was replaced on a vehicle I'd have millions."
That said, there doesn't seem to be an "official" way to do it, or an entirely safe way. But since you ask, here are some ways people have done it:
1. Clean it with a throttle body aerosol cleaner which states that it's safe for oxygen sensors.
2. Heat it up with a torch and dip it in water. Use an air hose to clean the gunk out. Repeat.
3. Soak it in "Seafoam" (the engine cleaner, not salt water) overnight.
4. Soak it in gasoline overnight. Shake the dissolved gunk out.
It's one of those things, like nobody's going to tell you how to clean your bathroom mirror with ammonia at $0.99 a gallon, but lots of people are happy to sell you ammonia with blue die in it at $4.50 a pint.