Smog problem

[Bill]

Having trouble passing California smog. I think I have made significant progress, but have questions about some parameters. Have any idea what these mean?

O2 Crscnts L & R

Intgrater L & R

Requested idle is 650 RPM
Actual idle 800 RPM
IAC is 0

I'm using an Arotron CP9145 scanner

Thanks for any help
Bill

[scottfab]

Originally Posted by Bill

Having trouble passing California smog. I think I have made significant progress, but have questions about some parameters. Have any idea what these mean?

O2 Crscnts L & R

Intgrater L & R

Requested idle is 650 RPM
Actual idle 800 RPM
IAC is 0

I'm using an Arotron CP9145 scanner

Thanks for any help
Bill

Does the scanner indicate you're running in "open loop"?

[Bill]

Negative Scott shows closed loop, engine idling for about 20 minutes. no codes indicated.

[tccrab]

Bill:

BennieC is still around over by you although he closed his smog shop a couple years ago.
I can dig up a phone number if you need it.

What are the smog nazis' giving you grief on?

TomC
'Crabs

[scottfab]

Originally Posted by tccrab

Bill:

BennieC is still around over by you although he closed his smog shop a couple years ago.
I can dig up a phone number if you need it.

What are the smog nazis' giving you grief on?

TomC
'Crabs

Because the IAC is 0 I'd say you have air leaking in somewhere.
Start with the throttle plates. Take the bellow off and see if you can pres them shut more.
What is the failure slip say? Too high of an idle or HCs to high or CO2 or?

[scottfab]

Originally Posted by Bill

I'm using an Arotron CP9145 scanner

I think this is suppose to be
actron cp9145
right?

[Bill]

Originally Posted by scottfab

I think this is suppose to be
actron cp9145
right?

OK My eyes aren't as good as they used to be. Problem is low speed NO2

[Bill]

A number would be great Tom. Been fighting this for almost a year. the current problem is NO2 last test was 770 ppm and spec has been lowered to 541. I cleaned up a pretty severe vacuum leak and things look much better. I just hate throwing away $50 to fail again

[scottfab]

Originally Posted by Bill

A number would be great Tom. Been fighting this for almost a year. the current problem is NO2 last test was 770 ppm and spec has been lowered to 541. I cleaned up a pretty severe vacuum leak and things look much better. I just hate throwing away $50 to fail again

With NO2 high could be the EGR is not opening. With it not opening the burn temps will be too high creating more NO2. You could force open the ERG to see.
Problem of course is you need a sniffer to tell you when you've got it.
That will be shop time.

[ittlfly]

[QUOTE=Bill;89267]Having trouble passing California smog. I think I have made significant progress, but have questions about some parameters. Have any idea what these mean?

O2 Crscnts L & R

Intgrater L & R

Requested idle is 650 RPM
Actual idle 800 RPM
IAC is 0

I'm using an Arotron CP9145 scanner

Thanks for any help

O2 cross counts is showing the O2 passingabove or below 450mv. It is sensing the exhaust gases and either adding or removing fuel depending which side of the 450 its' on. The L-R intergrator is the fuel trim the PCM is adjusting for in the short term. 128 is the center mark for the intergrater for an ideal 14:1 A/F ratio. The PCM will use the intergrator to make adjustments to the BLM's or log term fuel trim IF the intergrator is scewed constantly to one side of the 128 mark.