Hi
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Joined: Jan 2003
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From: 3rd Rock
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Scroll down to the Expy forum, (main page) and post your question there
ENJOY FTE
Scroll down to the Expy forum, (main page) and post your question there
Logistics Pro
Joined: Oct 2000
Posts: 3,960
Likes: 5
From: All over Texas
Originally Posted by Rexpedition
Looking for help with my 97 Expy 4wd 5.4 idling rough
It's probably a bad IAC valve or a bad coil pack but could be countless other things too.
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New User
Joined: Oct 2004
Posts: 2
Likes: 0
Thanks
Thanks for your reply.
That was my first time to this site.
I really just meant that as a "hello" message, not a problem to be diagnosed.
Of course, if I needed a diagnosis, I would provide a long list of details.
I was mainly trying to search for an answer and it seems I found one.
You were quite close - not the IAC valve, but the 90 degree elbow hose below/behind it was melted/deteriorated all the way through.
Replaced it with a $5 universal "Help" brand hose from Kragen's and it's purring like a kitten again.
This info I found at this site was quite helpful and I think the key was that I had codes PO171/PO174 and P1131/P1151 which, when showing up in pairs like that (errors from both banks at the same time) it's a pretty big likelyhood that the problem lies ahead of those codes and I was able to focus on the possible causes under the hood (instead of the typical o2 sensor).
Next up - PO446 Evap problem (had it for a long time with no noticable consequence), but that will be for another day.
Jerry.
That was my first time to this site.
I really just meant that as a "hello" message, not a problem to be diagnosed.
Of course, if I needed a diagnosis, I would provide a long list of details.
I was mainly trying to search for an answer and it seems I found one.
You were quite close - not the IAC valve, but the 90 degree elbow hose below/behind it was melted/deteriorated all the way through.
Replaced it with a $5 universal "Help" brand hose from Kragen's and it's purring like a kitten again.
This info I found at this site was quite helpful and I think the key was that I had codes PO171/PO174 and P1131/P1151 which, when showing up in pairs like that (errors from both banks at the same time) it's a pretty big likelyhood that the problem lies ahead of those codes and I was able to focus on the possible causes under the hood (instead of the typical o2 sensor).
Next up - PO446 Evap problem (had it for a long time with no noticable consequence), but that will be for another day.
Jerry.
Last edited by Rexpedition; Oct 25, 2004 at 09:56 AM.
