Question about 1993 Ford Bronco

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My '93 has a hard time going up hills. It also has a high idle when I first start it.

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Hight idle may be automatic choke.Low power mainly poor compresion from worn piston rings,valves timing,sparkplugs,bad oil.Could be a cloged carb also.Cheers

Posted on Oct 21, 2013

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Posted on Jan 02, 2017

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SOURCE: van kept surging. would idle

Throttle position sensor needs replace.Set base idle voltage on new sensor to .9 to1.0 volts

Posted on Jan 27, 2011

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1 Answer

RPM's go high when driving but then go back to normal


What you are describing sounds normal. RPM's stand for revolutions per minute. Each minute your engine is running, the pistons are going up and down. When you are not going anywhere, your engine is idling and so the RPM's should NOT be very high. However, when you race up a hill, your RPM's SHOULD be high because your engine has to work hard to climb the hill or to go fast.
Idle speed= 650 Revolutions Per Minute. That means your engine cylinders each work 650 times in One minute.
At freeway speeds, your engine will revolve somewhere between 1600 and 2100 times per minute. I hope that helps.

Apr 20, 2015 | Cars & Trucks

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Hard time starting, no power going up hills, stalls when idle


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1995 Ford F-250 diesel idles fine, loses power when driving more than 5 minutes. Blinking fuel filter light goes steady.


Did you ever change the fuel pump? most of the time when fuel pump is weak does that on hills, and then is hard to restart

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High idle


Did you smoke test it to determine no vacuum leaks?

Dec 14, 2012 | 1993 Chevrolet S-10

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93 monty idles high then dies on cold startup


I would check the idle air control valve. The computer controls idle speed by regulating the amount of air entering the throttle body by using the valve. It could be sticking or failing.
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Oct 04, 2012 | 1999 BMW 318 ti

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My car is downshifting going up small hills and is also sputtering when it does so. it also revs high and doesnt downshift, it stays around 4000 to 5000 RPM's


Check the high idle control valve. Also when is the last time you had a tune up? How many miles do you have, and has the transmission filter ever been replaced? Spark plugs, check plug wires, What year? Does it have a distributor cap and rotor? Fuel filter? Air filter? Those are the regular tune up related projects for the do it yourselfer. If you change the trans filter, try adding the "Lucas" tranny fluid. Helps out when tranny's start have a hard time shifting or uneasy shifting. If check engine light is on, check out the local autozone, run a scan and see what pops up, then post your results and we can go from there. Little more info about the specifics of your car. Year? Model? Hope this helps.

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I have 2 problems with my 2000 5.9 dodge 4x4 first it is very hard to start if parked facing up hill downhill it fires right up.second it decelerates while driving it will go back to an idle pump the pedal...


check the fuel regulator ,parking up hill sounds like the fuel is leaking off pressure and going back to tank,when you park down hill,gravity is keeping the fuel pushed in the lines

Dec 02, 2009 | Dodge Pickup Cars & Trucks

2 Answers

Loss of power on acceleration. Put new fuel


Probably the ignition timing is not advancing the spark on acceleration or high rpm's.

That is the job of the ECM (Electronic Control Module). Check it / Replace it.

Hope this helps!

Sep 17, 2009 | 2003 Chevrolet Impala

1 Answer

Losing power up one particular long hill


It sounds like a tranny problem. Without more info kinda hard to diagnose. The simplist thing to check is tranny fluid. If its low, going up a hill will pull fluid out of the torque converter. It could be the converter itself. It could possibly a fuel problem, but unlikely. Hope this helps. John...

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1 Answer

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