error code lean bank 172

I found this article to be very informative with my 171/174 errors. Read through carefully, there is a section on your 172 error.

-JCM900

Suggest you try to locate the leak first, disconnect the ISC and use an unlit propane torch around all seams and ports.

Patrice Barrette opined in news:HPpmd.218294$ snipped-for-privacy@charlie.risq.qc.ca:

When am I gonna learn to not post without my own research..

They double-talked you, or they are stupid!

On two different sites, -look at that link from JCM- this is described as a "rich" condition.

The confusion is caused by the term "limits of lean-shift"... which means the suystem is adjusting lean to the limits of its ability and still sees overly rich.

So there's no air leak... it's either leaky injector or too much oil getting through.

I hate to say it but you'd better read the plugs.

Hmmm about that PCV

Backyard Mechanic opined in news:Xns95A37DA44D033BkMch6d@207.115.63.158:

"Backyard Mechanic" wrote

I'll give you one more try. :)

For those, all my sources say :

- Single, Right or Rear HO2S

Of course, 172 seems to be for right bank, not left.

Curiouser and curiouser.

Oh, welll.....

i should'a known that. Dont do this when you're tired kids!

But this is a little perplexing..... suggest Patrice; go to another source to get a second readout

Though the driveability symptom does suggest lean.

could disconnect the ISC connector and use the unlit propane torch test to see if idle speed changes, kinda hard in those cramped quarters.

MasterBlaster opined in news:6QGmd.181361$9b.149456@edtnps84:

thank for all your answer , i have clean the air sensor with brake cleaner and the trouble is still there,and the code readear at ford was an OBD -1 , and on the sheet of ford it say's 172 lean left bank , so i'll call them to verify the code

how do i test for a leaky injector

where is the ICS connector and how does it look like

thank's again and i'll keep you posted on the result

pat snipped-for-privacy@hybride.com