Hey Bob,
> At 08:01 PM 8/30/05, you wrote:
>>What I'm wondering is does the throttle position sensor have
>>anything to do with the initial start up when cold?
> Yes. Engine start-up is an open loop mode.
Thanks for your knowledge on this matter.
The reason why I thought it was the TPS is because when it's cold sometimes
I will put my foot down on the gas pedal slightly, to open the butterfly
valves a little, and start the truck and as soon as it is started take my
foot off the pedal. The revs will go up a
little higher than normal but thats expected, and after that no problem with
sputtering.
>>Could it be O2 sensors? I only have 63,000 KM on my truck,
>>but I notice a lot of black soot out of my tailpipe lately. -Jay
> Is the black soot coming out while you're at idle or cruise?
I made a mistake, there is no black soot coming out when running, it's just
that the inside of the tailpipe seems covered more than normal, than I've
seen in my 40 years of owning vehicles.
>O2 sensors generally have a useful life span of 60k to 80k so
> it's possible that the forward O2 sensor might be the culprit
> Bob
I only have 63,000 Km on my truck which works out to 40,000 miles, but maybe
the front O2 sensor has bit the dust.
Thanks again for response.
-Jay
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