When the lift pump on my truck started to go it would not idle when it was started with out holding the pedal until it got the air out which took about 10-15 seconds, maybe a bit longer. It also surged when running 55-60 mph and felt like it wanted to die at idle sometimes.
Power surges after 2500 rpm
Well, I did a search and I can't find anything that is the same as my problem.
What happens is, at 2500 rpm, if I increase the throttle there is less acceleration than there should be, then at maybe about 2600 rpm, the truck will surge up to about 3000 rpm without a change in the throttle.
Seems like it happens only when the truck is warm, and maybe been on the highway for a while, but I also don't rev it that high when cold so I am not 100% sure of that.
I am guessing the IP or lift pump, but IP is the only thing that makes sense to me.
Has anyone experienced the same thing or have any ideas?
What happens is, at 2500 rpm, if I increase the throttle there is less acceleration than there should be, then at maybe about 2600 rpm, the truck will surge up to about 3000 rpm without a change in the throttle.
Seems like it happens only when the truck is warm, and maybe been on the highway for a while, but I also don't rev it that high when cold so I am not 100% sure of that.
I am guessing the IP or lift pump, but IP is the only thing that makes sense to me.
Has anyone experienced the same thing or have any ideas?
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