Question about 1997 Mitsubishi Galant

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2000 gdi 4g94 galant. fault, will not rev past 4000 rpm.

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Has this always bee like this ?? If so thats because your cars computer is programed that way, Different cars are programmed differently, depending on their use, for example sport cars are programmed to be faster and pull more air and fuel to run faster. But those for home or economy use like yours is set up to be economical. If you want this changed speak to a local car garage specializing in fast cars and modding, they will be able to reprogram your cars cpu or replace it with a modded one.

If that wasnt always so then have a diagnostic done on the cars computer, to look at the throttle body position sensor, oxygen sensor, fuel pressure sensor and electronic accelerator one of those are malfunctioning an needs changing.

Posted on Apr 02, 2011

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Posted on Jan 02, 2017

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5 speed 1.9 engine


If you're talking 4000 rpm, in neutral you'll cause engine damage! 2000 RPM is the max safe limit. Power loss is usually due to a restricted fuel filter. Does it smoke when running? (air filter), Try some Isopropyl alcohol deicer or fuel injector cleaner to ensure there's no water in the system. you haven't given enough info to diagnose the problem, i.e. drivability, history, and symtoms. BobB

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Galant vrg gdi 4g94


That is pretty much normal. When the AC engages it's compressor it triggers the idle sensor to increase idle to compensate for the huge load that an AC unit puts on a vehicle. If your AC is producing cold air, approx. 40 degrees on high, then it should be ok. Power loss is all part of the program with AC. It takes much more noticeable power to run an AC unit on a vehicle, and especially a 4 cylinder. Ever see your house lights dim a bit when you turn on the Home AC central air? :.) Every item under your hood connected to your engine steals power from the engine. The AC is the king of all takers of power.

Jun 28, 2013 | 1999 Mitsubishi Galant

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98 saturn 1.9 eng bogs up n down at 4000 rpm


just wondering is your car doing this in park saturns have a rev limiter that will not let your engine rev past 4 k if the car is in nutreal or park

Mar 26, 2012 | Cars & Trucks

2 Answers

2000 pontiac grand am 3.4 motor auto trans 4 door.Car starts and drives okay motor seems to stumble slightly between 3000-4000 rpms. with car stopped in park try to rev motor will only go between 3200-4000...


Hi Tom your vehicle is equipped with a Rev limiter it will not allow you to rev the engine above 4000 with the trans in park; as for the first problem you may have one of two things, one of the spark plugs or spark plug wires is bad or you have a flat spot on the throttle positioning sensor in which case have be replaced. Good luck?

Mar 10, 2011 | 2001 Pontiac Grand Am SE

1 Answer

Runs rough under load ,stalls and won,t free rev over 4000 rpm. Acts like rev limiter kicks on.


Hi

one of 3 faults

1 MAF sensor also Known as air mass sensor
2 EGR valve, this is most common with the 4000 rev limit and a top speed of say 50 mph
3 air leaks or tears in air pipes or poor seals.

I would be tempted to clean both the EGR and MAF sensor before spending any money though, these parts ofetn work much lonegr when clean

Regards

Dan

need more info get back to me

Jan 03, 2011 | 2000 Buick LeSabre

1 Answer

Carisma 1.8gdi will not rev past 4000 revs and show


im having the same problem changed maf changed coils cleaned the carb but still stays at 4000 rpm help please

Aug 09, 2008 | Mitsubishi Eclipse Cars & Trucks

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