Van has been loosing power going up hill. Runs fine on level land and going downhill. lately it has been stalling when u first start it up.

Sounds like about the right distance for the system to go into close loop.Use a good scan tool to check parameters of the system to locate the failing sensor/item when it stalls.

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

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Bogging - lack of power going up hills ' SHO Forum

www.shoforum.com/index.php?threads/bogging-lack...power...up-hills...
Oct 17, 2006 - I just ran into my first problem - The car runs fantastic on flats, going downhill,... ... No problem pulling up that hill at slow speed - plenty of power. It's only when out on a ... Anyone got a handle on a good used torque converter?

why do i lose power on hills - CarGurus

www.cargurus.com > Questions > GMC > Sierra 1500

CarGurusOct 17, 2013 - I lose power on hills change the fuel pump and checked timing changed catalytic ... The TPS will make the ECU "go nuts" as it says...I'm here. ... has no power going up hill with small boat on, on flat ground runs good 1 answer.

2000 toyota corolla lx aut. 4cyl. car looses power no power ...

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CarGurus

I have seen many pass though my shop, these are some what known for this ! There's a 95% chance it is your TPS, throttle positions sensor, now the other 5% has also been there Crankshaft Sensor and IAC, are you doing you doing the work yourself ? If you are, it would help if you get a repair manual for your car. Because then you can follow the test for each of these, you would also need a multi meter to test with. On a scale of 1~5 with 5 being the hardest, I would say it's a 2.What you need the repair book for is the voltage to test for on each of these sensors.

When was the last time you changed your fuel filter? I had a truck, exact same problem then it started stalling out going up hills, was a plugged fuel filter

Hi tinkerbel925

Have you tried scanning it with a scan tool? If this much is going wrong there should be a check engine light on. This will tell you what is making your van do all that crazy stuff.

-hopeufixit-

My experience is that cruise control works on level roads, uphill you have to control speed yourself same for downhill. Exception is very powerful cars. Did it maintain speeds before? (uphill + downhill)

problems you described would suggest you need to replace the spark plugs, a bad one tends to fail under loads like going up hill. the other thing you could try is to get a better fuel grade, that would correct pinging noises uphill. and throw in some fuel injector cleaner every 2000km, it makes a happy running engine

I had a similiar problem on my 1999 Dodge Ram 1500 Conversion Van. It ended up being a partial collapse of the catalytic converter which didn't allow adequate exhaust. The problem only showed itself because I could not get over 55 mph going up a small hill.

remove the carb. and clean the float , and the float bowl . when gas setts to long it gums up that area and doesn't get the right amount of fuel into the bowl , so when you hit a hill its starving for fuel