A little bit of black smoke

[BustedKnucklez]

I got an '03 with the ICP sensor on the HPOP. It gives a little bit of black smoke during hard acceleration at speed which is what the customer is complaining about. It has no codes and the only thing that I really see off is that the ICP sensor is reading .13V KOEO. Would that cause that kind of problem? The truck runs good.

[Keith Browning]

The truck runs good.

Well, just how much smoke are we talking about? A little smoke is normal.

[BustedKnucklez]

It's just a puff of black smoke. It's not continuous.

[Jeff_E]

normal to see a little smoke on hard acceleration.

 

Your ICP is bias though and should be replaced... probably the connector too. And doing so may even reduce the smoke, but you will never get rid of all of it.

[DwayneGorniak]

Spec for ICP is .18v to .24v. I would change that ICP. I have seen many cause black smoke.

[Bruce Amacker]

Ditto on the ICP and pigtail. The cat may be at fault, also, as it's job is to burn particulates.

 

Good Luck!

 

 

 

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[BustedKnucklez]

Replacing the ICP worked. No more black smoke. I wiggle tested the pigtail and it was fine so I just left it alone. Thanks for the suggestions guys.