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Discussion Starter · #1 ·
At idle its perfectly clean. When they rev it the CO shoots up to 6%. Plugs and general tune up are perfect. Plugs read nice and tan. It runs great, strong and no smoke. It gets 20MPG (it used to get 24) The guy thinks AFM as he tried to lean it way down. Helps at idle only. As soon as its revved everything shoots up again. I have seen earlier posts and I have cleaned the various sensor connectors. If I cant get it to pass, its non-operational status. Please don't let that happen to me!

thanks,
DG
 

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> At idle its perfectly clean. When they rev
> it the CO shoots up to 6%. Plugs and general
> tune up are perfect. Plugs read nice and
> tan. It runs great, strong and no smoke. It
> gets 20MPG (it used to get 24) The guy
> thinks AFM as he tried to lean it way down.
> Helps at idle only. As soon as its revved
> everything shoots up again. I have seen
> earlier posts and I have cleaned the various
> sensor connectors. If I cant get it to pass,
> its non-operational status. Please don't let
> that happen to me!

> thanks,
> DG
 

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> At idle its perfectly clean. When they rev
> it the CO shoots up to 6%. Plugs and general
> tune up are perfect. Plugs read nice and
> tan. It runs great, strong and no smoke. It
> gets 20MPG (it used to get 24) The guy
> thinks AFM as he tried to lean it way down.
> Helps at idle only. As soon as its revved
> everything shoots up again. I have seen
> earlier posts and I have cleaned the various
> sensor connectors. If I cant get it to pass,
> its non-operational status. Please don't let
> that happen to me!

> thanks,
> DG

Had the same problem last week on a '77 2+2. Try holding the idle up till it shows rich on the machine (CO + HC High). When the mixture goes rich, unplug the TPS (throttle position switch). If the emissions fall, the full throttle contacts are closing too soon. Adjustment or replacement of the switch will cure it. Just make sure the throttle is being held at less than 3/4.
 

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Discussion Starter · #5 ·
Phantom, thanks for response but no message..

You always seem to have great advice so I was looking forward to your wisdom but I see no text.

thanks again for responding.

DG
 

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Discussion Starter · #6 ·
Another way to check your TPS is to have someone put the pedal to the floor and check continutity from pins 24 to 30 on the sensor. It should read as having continutity. Then, slowly let off the pedal and it should change to no continuity right away. You should be able to adjust the tps sensor by losening the bolts and rotating it.

If your TPS is bad with what dat-guy was talking about, I would think that your tps is going to show continutity until the pedal is at the idle posistion. What this tells the computer is that Hey this driver just put the pedal to the floor. Start dumping in gas quick so that the lack of vacuum engine doesn't kill it.

More gas=more crap comming out the tailpipe.

Make sense?

jA

p.s pin diagram of my tps (80 280ZX, yours might be different)

Throttle body on this side

24 30 29

_________

|-- -- -- |

---------

Fender on this side
 
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