o2 sensor code 45
 

I have a 90 ZR1 with a slight misfire,and an OBD code 45 {left oxygen sensor}.Can it be just a bad o2 sensor or is there something else giving me the code? Any suggestions?

Re: o2 sensor code 45
 

Possible leaking injector.

Re: o2 sensor code 45
 

Thanks,I'll check it out. Is that possible with only 4000 original miles on the car?

Re: o2 sensor code 45
 

100% if you haven't changed the injectors. Are they original injectors?

Re: o2 sensor code 45
 

Yes,they are original. So is everything else on the car ,including the tires!

Re: o2 sensor code 45
 

The original Multec fuel injectors are sensitive to the ethanol in today's gasoline.
There has been a near 100% failure rate on these.

Your choices are:
$$$$ RC Injectors
$$ Accell
$ FIC's rebuilt MSDs

TomC
"Crabs"

Re: o2 sensor code 45
 

Thanks guys,Ill look into new fuel injectors.

Re: o2 sensor code 45
 

FWIW, my FICs appear to be brand-new Bosch injectors.

Re: o2 sensor code 45
 

I got a set from Jon last December and installed them in April. I was under the impression, at least the set I bought, to be reconditioned (as opposed to rebuilt) Bosch units.
Nonetheless, for $365 for all 16 was affordable and my 94 has never run this good!