Real Fiero Tech

Well my car suddenly gets a code 45 after it warms up for a few minutes. The O2 sensor is only about 3 years old on the car and the engine only has 10k on it. Is this code typically due to the o2 sensor going bad or something else??

What would be the best way to figure out what is exactly wrong without buying a bunch of parts?? Thanks, Mark

1987 GT
3.4L pushrod

Dough19 wrote:The O2 sensor is only about 3 years old

Only?

Replace it.

I like to go to the JUNK YARD for 02 sensors. Most gm cars use the same one, and all you need to bring is a 7/8" wrench. I give them a shake and listen for a rattle and if it dosent I grab it. My current 02 sensor came from an 87 camaro that my brother was gonna crush. Still works fine.

I know its cheap to do it this way, but look, your new parts store one only lasted 3 years. Stock units last almost 20.

p8ntman442 wrote:I like to go to the JUNK YARD for 02 sensors. Most gm cars use the same one, and all you need to bring is a 7/8" wrench. I give them a shake and listen for a rattle and if it dosent I grab it. My current 02 sensor came from an 87 camaro that my brother was gonna crush. Still works fine.

I know its cheap to do it this way, but look, your new parts store one only lasted 3 years. Stock units last almost 20.

That sounds like a good idea, except how do you know which cars would have the same O2 as the Fiero? Should I just look for an 80's 2.8L MPFI engine?

You guys have to be joking. New Bosch O2 sensors cost all of 16 bucks in my neck of the woods. Don't be a stereotypical Fiero owner. It'll cost you not much less than that to put a 20 year old, crusty O2S in unknown condition that's been sitting out in the yard for who knows how long in.

p8ntman442 wrote: but look, your new parts store one only lasted 3 years. Stock units last almost 20.

yeah because the motor is burning oil now so it gets carboned up faster

haha :withstupid:

I fully understand your argument guys. But when you buy and part as many cars as my brother and I do, its an easy way to keep stock of 02 sensors. Stock units last longer than replacment ones.....Hands down.

Blue Shift wrote:You guys have to be joking. New Bosch O2 sensors cost all of 16 bucks in my neck of the woods. Don't be a stereotypical Fiero owner. It'll cost you not much less than that to put a 20 year old, crusty O2S in unknown condition that's been sitting out in the yard for who knows how long in.

Where did you buy it at?? The last one I bought was a Bosch and it was at least $60-70.

Dough19 wrote:

Blue Shift wrote:You guys have to be joking. New Bosch O2 sensors cost all of 16 bucks in my neck of the woods. Don't be a stereotypical Fiero owner. It'll cost you not much less than that to put a 20 year old, crusty O2S in unknown condition that's been sitting out in the yard for who knows how long in.

Where did you buy it at?? The last one I bought was a Bosch and it was at least $60-70.

Autozone, its like $16 with the connector already on it, $13 with just the wire (splice in your own connector).