Wssup from Boston! P0171 and P0174 DTC | Ford Explorer - Ford Ranger Forums - Serious Explorations

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Wssup from Boston! P0171 and P0174 DTC

Grant617

New Member
Joined
November 29, 2005
Messages
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City, State
Boston, MA
Year, Model & Trim Level
00 Mountaineer 4.0
Any help will be greatly appreciated. Here is some freeze frame data for the trouble code P0171 (system too lean bank 1) w/P0174 (system too lean bank 2) pending. Note the previous week I had the exact opposite trouble/pending code.

Engine RPM 1831
Calc Load% 59.2
Coolant F 181
LT FTRM1% 6.3
STFTRM1% -3.9
LTFTRM2% 4.7
STFTRM2% -4.7
Veh Speed 7
Fuel Sys1 Closed
Fuel Sys2 N/A


Current I/M Data at Idle

ABSLT TPS 19.2
RPM 655
Calc Load% 30.6
IGN Adv 17.5
MAF LB/M .62
IAT 70
LTFTRM1% 6.3
STFTRM1% -2.3
LTFTRM2% 7.8
STFTRM2% -2.3
O2S11 .76
O2S12 .725
O2S21 .76
O2S22 .710

The bank 1 O2 sensor was changed within the last year. Do you think this is a case of a vacuum leak/manifold leak or bad MAF sensor..please explain? Is there any where I can find the right parameters for all of these OBDII functions to compare my readings?
 
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Grant617

New Member
Joined
November 29, 2005
Messages
3
Reaction score
0
City, State
Boston, MA
Year, Model & Trim Level
00 Mountaineer 4.0
Problem Solved!

It was the O-Ring kit that everyone talks about (00M12). Cost me $85 bucks for the dealer to diagnosis, $35 bucks for the kit and a little over a hundred to have a Ford Master Tech fix outside the shop (I think the dealer bills at about 4 hours so you would be looking at $300-$500 for labor). I was reading how much of a nightmare the o-rings were so jumped at the Tech's offer to fix it. It was done in about an hour (he says he changed so many of them it was like changing a tire to him).

My truck sounds much better now and runs great. If you go this route don't just buy the o-rings get the entire kit. The Cam Tensioner and Oil plug are much better and will have your truck running smooth (really gets rid of the engine rattling you may be hearing). Now I have to figure out how to get my front end to be like new again. I know I need some sway bar bushings.

Good luck
 
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