What needs to be checked when my truck has poor acceleration going up a hill? Why does it have no power and then have surges of power

Surges under load but only while going uphill Page1 - Chevy High ...

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Mar 6, 2011 - 14 posts - ‎8 authors
Trying to help out a friend. ... The truck starts, runs, and drives fine until you get to a hill. When going up hill it begins to surge, almost stalling but not quite. ... rubber fuel lines suck shut under a heavy load and act like that. .... tranny fluid level o.k.? ya got me stumped. runs great when it's on a flat surface?

Ford 460 engine - RV mechanic

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Will not take gas going up a hill but will maintain speed at 55 mph. ... Want to do a diagnostic test on my 1997 F250 with 460 engine. ... only get to about 40 miles an hour if i push it the engine acts like its running out of gas,thank you .... The truck hesitates on acceleration, while driving on flat surface is fine, however climbing ...

rough idle, stalling, loss of power. - CarGurus

When the engine really got hot is there a possibility you may have over expanded some parts and now the engine is sort of tight and is not spinning fast enough to start.

Check for spark and fuel delivery but ......................

check fuel pressure with a gauge as well as fuel volume. pressure should be around 35 lbs and the volume should be about 1 litre in 30 seconds. if its not then this can cause poor power going up hills and accelerating. how long has it been since the fuel filter was changed.

check air filter and run gas line anti-freeze

Fuel filter.

Fuel pressure Normal range is 35 to 70 PSI. Without the proper fuel pressure needed the vehicle surges and looses power especially goin up hill and at WOT(wide open throttle) . Its a good call if you change full filter your going to any way. you got a surge going on. Also check the airfilter once that plugs up it will also cause the surge. Surges happen when it lacks something so your getting less of some thing

Hello,
Here are 3 very common causes for the isuues you're having.

1. Dirty air filter.
2. Faulty MAF, ( mass air flow ), sensor.
3. Faulty oxygen sensor.

These 3 things prevent the on board computer from determining the proper fuel/air mix ratio, and leads to symtoms like, poor acceleration, poor MPG, loss of power, fack stalling, and stalling.

I hope this helps you.

fuel filter.. or possibly the turbo that you bought is bad

HAVE SOMEONE CK THROTTLE POSITION SENSOR AND CATALYTIC CONVERTER MAKE SURE EXHAUST IS CLEAR

1992 4 runner 4 x 4, I think it is already passed 150,000 miles.the pistons and rings are lose and are leaking, the pressure probably low, try to use some oil treatment, I used Market America special oil treatment and got a very good result. you can set to 19 degrees and add some of those treatment see the result, this is cheapest way, just try it, because I can not test drive your car and check the engine pressure.
Please be sure go to MarketAmerica.com and check it first.