No uphill downshift, just bogs
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No uphill downshift, just bogs
I have a 1999 V-10 w/ 4R100 trans. With no load at 65mph the truck intermittently will refuse to downshift and almost die on the smallest of hills. Then if I pull over, turn off truck and restart, I can make the hill (maybe). Once it starts to bog down, manual downshifting makes no difference. It will downshift but bog and cough.
It eventually (hour?) threw a service engine soon light but it went off after restarting. No blinking OD. Shifting otherwise normally.
It does seem to hiss after turning it off, like there's a backpressure issue. I'm dying to pound out the cat if that's the culprit.
1999 F-250 V-10 crew cab w/ 232K miles approx.
It eventually (hour?) threw a service engine soon light but it went off after restarting. No blinking OD. Shifting otherwise normally.
It does seem to hiss after turning it off, like there's a backpressure issue. I'm dying to pound out the cat if that's the culprit.
1999 F-250 V-10 crew cab w/ 232K miles approx.
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From: laporte in
Your best bet is to make the CEL come back on and run the codes. Or try running the codes now, especially with a scanner that reads pending codes.
I'm lead to believe its a fuel issue or a computer issue. When was last tune up?
I'm lead to believe its a fuel issue or a computer issue. When was last tune up?
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It was intermittent. Even if I floored it on a flat straight, it would bog, no shift.
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I dont know if i can get it to throw the code again w/o risking an accident - again.
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From: Stephensville WI
Just a hunch, but could your catalytic converter be clogged?
Try disconnecting your exhaust ahead of the catalytic converter and going out for a quick test drive. If it is the issue, your power should be restored.
Try disconnecting your exhaust ahead of the catalytic converter and going out for a quick test drive. If it is the issue, your power should be restored.
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From: SE Florida
When the CEL came on a code was stored in memory. It will stay there for about a month after the last time the light was on. There is no need to try and make the light come one again, the code is available.
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Thanks Mark. Your advice, in particular, has saved me tremendous amounts of time and money. Greatly appreciated!
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From: laporte in
Thanks for the clarification Mark. I didn't know they were stored that long!
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