Surging
Seasoned HDF Member
Joined: Oct 2007
Posts: 8,854
Likes: 2,494
From: Decatur, Alabama
the hot idle and cold idle can both be adjusted. It's in the service manual and not hard to do. The hot idle has to be adjusted with the air cleaner off though.
Stellar HDF Member
Joined: Jan 2009
Posts: 2,578
Likes: 463
From: On a Lake, not far from the Gulf
First thing as has been said is to pull any codes that may be stored. Second try resynching the ECM & the IAC. Kill switch to RUN. Turn key switch ON for 5 sec (about 2 sec. after fuel pump stops pressurizing). Then Off for 10 sec. Repeat a second time.
I am leaning toward the ETS, as it only happens after it is warmed up. You can check the ETS by measuring voltage and resistance.
I am leaning toward the ETS, as it only happens after it is warmed up. You can check the ETS by measuring voltage and resistance.
Last edited by larsfum; Jun 20, 2014 at 09:55 AM.
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Road Master
Joined: May 2014
Posts: 827
Likes: 59
From: Canada
I tried reading the codes as above.
Nothing, no blinking lights at all.
Also tried the resynching with the key as above, no change at all.
Not too sure about the table above, is that test outlined in the manual, (that's not yet here)??
Thanks
Nothing, no blinking lights at all.
Also tried the resynching with the key as above, no change at all.
Not too sure about the table above, is that test outlined in the manual, (that's not yet here)??
Thanks
Last edited by johnod; Jun 20, 2014 at 08:11 PM.
Stellar HDF Member
Joined: Jan 2009
Posts: 2,578
Likes: 463
From: On a Lake, not far from the Gulf
It is outlined in the 1998 manual. Not sure if it is in the 1997 one, but they should be the same. There is a whole set of diagnostic flow charts to track down FI issues.
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Seasoned HDF Member
Joined: Oct 2007
Posts: 8,854
Likes: 2,494
From: Decatur, Alabama
You should get a bunch of really fast blinking lights even if you don't have any stored codes. Try that on/off thing again a time or two. You'll know when you get it right.
carl
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Road Master
Joined: May 2014
Posts: 827
Likes: 59
From: Canada
Got my manual yesterday too, that's gotta be a good thing.
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