Power Loss
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Junior User
Joined: Oct 2002
Posts: 52
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From: Beaumont Canada
Power Loss
Hi Guys,
Well the problem has come back. I replaced the exhoust and left the battery unhooked for about 3 hours. The truck ran great for about 700 miles then started losing power again. It seems like it goes into limp mode and if I try and floor it it even losses more power. If I slowly increase throttle it climbs to about 50mph and I can limp home. I pulled the codes and got 111 (twice) then 6 seconds and got a 172 (twice). With engine running I get a 632 code.
By these it would mean that the O2 sensor is gone as well as the transmission control switch could be going. What I don't get is why the truck would work fine for several hundred miles then just seem to shut down. If I leave it for a while (sometimes just 10 minutes) it is fine again, if a sensor is gone it should be acting up all the time. It is a 1986 E350 with a 7.5 litre engine. I see that several others have had simalar problems however I have never seen anyone come back with what the eventualy found. Any info thanks
Well the problem has come back. I replaced the exhoust and left the battery unhooked for about 3 hours. The truck ran great for about 700 miles then started losing power again. It seems like it goes into limp mode and if I try and floor it it even losses more power. If I slowly increase throttle it climbs to about 50mph and I can limp home. I pulled the codes and got 111 (twice) then 6 seconds and got a 172 (twice). With engine running I get a 632 code.
By these it would mean that the O2 sensor is gone as well as the transmission control switch could be going. What I don't get is why the truck would work fine for several hundred miles then just seem to shut down. If I leave it for a while (sometimes just 10 minutes) it is fine again, if a sensor is gone it should be acting up all the time. It is a 1986 E350 with a 7.5 litre engine. I see that several others have had simalar problems however I have never seen anyone come back with what the eventualy found. Any info thanks
Thread Starter
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Junior User
Joined: Oct 2002
Posts: 52
Likes: 0
From: Beaumont Canada
Ooops it is a 1996 not 86. New fuel pump, filter, plugs etc in fall.
Tranny code is probably because I forgot to cancell O/D prior to running test. Looks like I will start with changing the O2 sensor and looking for leaks.
Tranny code is probably because I forgot to cancell O/D prior to running test. Looks like I will start with changing the O2 sensor and looking for leaks.
Thread Starter
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Junior User
Joined: Oct 2002
Posts: 52
Likes: 0
From: Beaumont Canada
Okay, changed O2 sensor, dist cap, rotor, plugs and wires and fuel and air filters. Had battery unhooked for the two hours it took and then went for drive. Over the couse of the 150-200 miles it worked okay at varying speeds, however when I stomp on it it still seems to rev and not go. I can feel it kick down but it dosn't seem to engage. Also at about 50-60 mph it constantly shifts if I am in O/D, coulkd be that it is a big truck (18 ft cube van) and that is the power band. I didn't get any codes but then again after I changed out the exhaust it went about 500 miles then started. Will let you know if anything comes back. Sure hope it isn't the tranny packing in but that is what it feels like as if it is running through sand and can't seem to keep going.
