http://www.wellsve.com/ We take you step by step through a tough diagnostics of and intermittent P0171 trouble code on a 2006 Chevrolet Trailblazer. This veh…
P0171 Challenging Diagnostics Chevrolet Trailblazer
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Challenging, Chevrolet, Diagnostics., P0171, TrailBlazer
- Categories: Chevrolet
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Thank you! Good to hear from you! Mark Hicks Wells Vehicle Electronics
Nice work Mark! And a shout out to Donyboy , hope you fixed your problem.
Boring
Nice, but now solve it without the 10 thousand dollar scanner.
@Wellstech Does Inspector Tech have any relation to Sergeant Tech?
thanks Mark, i have replaced the cam sensor and I just received the crank
sensor to put in, i will let you know in about a month if it acts up again
Excellent diagnostic detective work!
Your vehicle has a different AIR system than the one in the video. If you
are getting trouble codes P0171 and P0174 chances are you have either
leaking manifold gaskets or a defective MAF sensor. If you would like a
diagram of your AIR system I will need to send it to your e-mail address.
You can leave me a message on my channel with your address. Hope this
helps, please let me know if you need any further information. Mark Hicks
Wells Vehicle Electronics
@rjh1217 Thank you for the kind words. But, Inspector Tech is the real hero
here! Take Care, Mark Hicks Wells Vehicle Electronics
Wow! This issue definitely deserves it’s own Technical Service Bulletin.
It is common for the crank and cam sensors to cause an intermittent stall
on your vehicle. Don’t know if you have replaced them yet. It is not real
common but it does happen on your vehicle where a cracked flywheel will
cause the same problems. Stay in touch, let me know what you find. Mark
Hicks Wells Vehicle Electronics
@LeakyDiaper Honestly, I like to use everyday tools, but in this case there
was no way to do it without a good scan tool. Mark Hicks Wells vehicle
Electronics
thumps up from me.,.,
@nobleheight Agreed! Mark Hicks Wells Vehicle Electronics
that would be helpful. send it to me at f2cb886e@opayq.com . thanks Eric
Thank you for the kind words, they do mean a lot to us! Mark Hicks Wells
Vehicle Electronics
i do smal engine diagnosis’, lol, check out my channel and if you want to
be featured in my “other channels section” and vice versa let me know
In my opinion, this issue deserves it’s own DTC. I believe it might be
possible to implement a test for a malfunctioning air solenoid valve
without modifying any hardware, but with only a change in the PCM’s
programming.
@nobleheight It is an intertwined story going back to early biblical times.
Unfortunately it is too long for the 400 remaining characters in this chat
box. The skinny answer is “yes”. In fact they are twins, but only two of a
set of four. Yes, their poor mother suffered through a quintuplet birth. In
future episodes we will be introducing you to the rest of the remaining
family. Stay tuned! Mark Hicks Wells Vehicle Electronics
Isn’t secondary air injected into the exhaust downstream of the primary
oxygen sensor?
@nobleheight Remember, there is a pressure sensor in the solenoid we
mention in the video. It is there to check hose integrity. I thought it was
funny that a code did not set for it. It is possible in later models it
will, but it didn’t happen with this one. Mark Hicks Wells Vehicle
Electronics
@ranacherian Thank you!!! Mark Hicks Wells Vehicle Electronics
awesome diagnosis
my truck sounds like it acts about the same as this one. does the chevy
silverado 2000 5.3l have the same air control solenoid valve? if so can you
give me a link to the location on the engine? tia Eric
my o6 sebring, 2.4 litre, will sometimes stall on a warm startup, but
sporadically. i have replaced a slew of sensors to no avail
I just sent you the information via your e-mail address. Hope this helps,
let me know either way. Mark Hicks Wells Vehicle ELectronics