Truck is sluggish...
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Joined: May 2002
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From: AK
Truck is sluggish...
Not sure what's going on. I'm thinking it may be fuel system or tranny related but here goes...
'90 F150 351w w/E4OD
After my truck is all warmed up it doesn't seem to want to rev out past 2000 rpms unless its floored, then it'll jump to 3000 and climb to about 3400-3800 and then shift. I'll even put it in 2nd and try to wind her out but it'll seem to bog down to around 2000. It doesn't seem to do this when its cold and it feels like it has more power.
'90 F150 351w w/E4OD
After my truck is all warmed up it doesn't seem to want to rev out past 2000 rpms unless its floored, then it'll jump to 3000 and climb to about 3400-3800 and then shift. I'll even put it in 2nd and try to wind her out but it'll seem to bog down to around 2000. It doesn't seem to do this when its cold and it feels like it has more power.
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Joined: Nov 2004
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From: N. Gwinnett Co. Georgia
Sounds like a trans problem. Have a competant shop that does free inspections check it out, get two opinions and post. Let's see what they say. I'm thinking torque converter, but let's see.
Tex
Tex
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Joined: May 2003
Posts: 90
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From: Kapaa, Hawaii
could be the tps. easy way is hook up an ohm meter and turn throttle slowly as you watch the meter swing, should be smooth thru out the range. if there is empty spots its not good. plus with the E-lectric trans now days, everything effects shifting, feel and the like...... if you think it is trans, check out the trans section they have tons of stuff that may interest you about the e4od and what to look for. ps Idont' know which wire to conect, there is usually 3 signal, grond and return something like that.
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From: AK
Yeah I was thinking torque converter too, but also the more I think about it, it seems to lead back to a fuel problem. I have another problem that seems to be related... when the truck is warm its harder to start. It cranks a lot longer after its warm to start and if I cycle the fuel pump a few times it'll fire up faster.
There are no transmission specialists where I live (or none I can confide in) and I'm guessing it would be cheaper/simpler to deal with the fuel system components first, just to get those out of the equation. What parts should I look into testing/replacing? Fuel pump, fuel pressure regulator...?
Also, I just put in a new TPS two years ago... that problem was real evident (stalling, idle fluctuation, high idle, etc.)
There are no transmission specialists where I live (or none I can confide in) and I'm guessing it would be cheaper/simpler to deal with the fuel system components first, just to get those out of the equation. What parts should I look into testing/replacing? Fuel pump, fuel pressure regulator...?
Also, I just put in a new TPS two years ago... that problem was real evident (stalling, idle fluctuation, high idle, etc.)
