Question about 2002 Dodge Caravan

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Moved from sea level to rocky mountains need to reset computer

The computer hassn't reset since I've been at altitude I'm burning a lot of gas compared to back home.

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  • Dodge Master
  • 4,340 Answers

The computer would not reset, the manifold absolute pressure sensor would, and I expect it has. Your condition sounds normal, sorry.

Posted on May 30, 2010

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Posted on Jan 02, 2017

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A motorhome with Hp of a nissan z24 engine, can it climb steep altitudes? i.e. Andes mountains or the weight of the motorhome would be too much for the engine?


A few ideas. 1) Try the motor home where you are now and see. Find some REALLY steep hills or something and try it out.
2) If it is an automatic transmission, you may need to purchase a "transmission cooler" kit to add on before you try mountain climbing.
3) If it is a stick shift, take along another clutch disc and pressure plate and throwout bearing in case you burn yours up.
4) And remember, cars and trucks that normally operate at sea level will not do well in high mountains. They need to have the timing and/or carburetor set for high altitudes.
5) Many countries outside the USA have different octane ratings on their gasoline, you will need to take along the stuff to set your engine to the octane rating of the gas you buy.
Be blessed

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The MDX owner's manual says to use only 91+ octane gas. The dealer says that because I am at high altitude that I do not need to burn premium gas. Is that correct? I live in NM at 5000+ feet above sea...


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Could be the radiator is full of bugs or normal road filth that accumulates. How is the coolant level in the radiator. Fill it if low. Were you stalled in traffic? Were you at high altitude, like in the rocky mountains or appalachian mountains. Check radiator cap. They are relatively in-expensive considering the job they do. The cap pressurizes the fluid in the radiator and prevents it from boiling out at higher altitudes or higher temperatures.

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Coming up the mountain from sea level to a higher altitude, my 5 gear 1997 chevy s10 truck, four cyl., slows down uphill and makes some explosions like it is *******. Once up the mountain, it runs fine...


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2 Answers

22R Carb at high altitude


Yes, Colorado is much higher in altitude. Do to higher altitude the barometric pressure is less than sea level by a long shot. Lower barometric pressure mean that less air is entering your engine. Which in turns mean that your engine is now running richer than it was at a a lower altitude. So I recommend checking you engine timing, and adjusting your carbs air/fuel mixture. yes this means that you may need to rejet. but first there is a screw on your 22r's carb that you must adjust to lean the air mixture just right. I have had a stock 22r carbortor before and never had to rejet it. i probibly should have but it ran fine at sea level and all the way to about 10000 ft. after 10000 feet i had to lean the fuel mixture to even alow the engine to run. This screw that you must turn is hidden due to toyota not wanting you to tamper with it and burn your engine to the ground by running your engine to lean. it has a metal plug on the passenger side of the carb about the size of a pencil eraser. you must drill that out and then you can adjust the air fuel mixture. Clock wise is to lean the air fuel. and Counter clock wise is to richen the air fuel mixture.A good rule of thumb is to turn the air/fuel screw all the way clock wise and then back out about 2 and 1/2 turns. That is the factory adjustment. you may only need 2 turns out. Best of luck i hope you get it running perfect. Try this adjustment first then if it still runs rich then think about rejetting.

Here is a picture of what i am talking about.

#1 is the air/fuel mixture, #2 and #3 are cold and warm idle screws.
#4 is a A/c idle adjustment.

5ff308f.jpg

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