Question about 1996 Mitsubishi 3000GT

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On acceleration under load boosts then cuts out then back in two or three times between 2500 rpm and 4000 rpm boosts cleanly above this

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  • Anonymous Mar 15, 2014

    I have a 95 ford 5.0. at high rpm 4000 and above it has a vibration both with acceleration and de acceleration. I have removed the belt and I still have the viberation could it be the harimoic ballancer?

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Does it do it while cold? I mean, the first 2 to 5 minutes of running your car after it sitting for a day? If it only does it while warmed up, i am having the same issue.

Posted on Sep 06, 2008

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Why does my 2001 Chrysler Town and Country 3.3L cut out at ~4000 rpm?


Probably a dirty fuel filter restricting the delivery of fuel to the engine.

Jan 21, 2016 | Chrysler Cars & Trucks

1 Answer

Will not excelerate past 4000 rpm


IF you have a carby then take it apart and clean it out as all the throats are not working properly including the accelerator pump.

Apr 06, 2014 | 1986 Toyota Celica

1 Answer

92 diamante ls detonation under acceleration (above 2500 rpm)


Check several items, Timing, failed knock sensor try better fuel, highr octane.

I hope this may have assited,
Tom

Apr 08, 2010 | 2000 Mitsubishi Diamante

1 Answer

CAR SURGES WHEN YOU ACCELERATE IN OVER DRIVE.


It may be the MAF sensor. In needs to be cleaned or replaced. Located on the throttle body, under the engine cover. Might need special anti-tamper Torx sockets to remove. 2 bolts. One wire connector.

I had to replace mine on 2002 3800 V6. Bucked and shook on moderate to hard acceleration at about 3500-4000 rpms.

Feb 03, 2010 | 2002 Chevrolet Impala

1 Answer

I have a Honda 2004 CRV - the repair ( OBD II) code is P2647 - what does that mean?


P2647 VTEC Oil Pressure Switch Circuit High Voltage - With Automatic Transmission Basicallly the sensor has gone bad or an oil passage has become blocked.

**. Locate the Variable Timing Electronic Control (VTEC) pressure switch on the end of the cylinder head. Honda has had problems with the VTEC oil pressure switch, there is an updated part number for the vehicle (37250-PNE-G01). On this vehicle the VTEC oil pressure switch can fail at any RPM.
2. The VTEC oil switch is normally closed, and grounds the reference voltage from the Engine Control Module (ECM) on the Blue/Black (BLU/BLK) wire. If the code sets at idle - 2500 RPM - and the Brown/Yellow wire has a good ground, then suspect a faulty VTEC oil pressure switch.
3. At approximately 2500-4000 RPM and when driving the vehicle, the VTEC system should turn on. To turn on the system, the ECM energizes the VTEC Solenoid valve and it allows oil pressure into the intake valve rocker arms, the oil pressure opens the VTEC oil pressure switch so the Engine Control Module (ECM) can verify that the VTEC did turn on correctly.
4. The code will set at idle to 2500 RPM if the reference voltage is not grounded. The code will set above 2500-4000 RPM if the VTEC oil switch does not open.
5. If the code sets at 2500-4000 RPM or higher, the problem can be a low oil level or pressure, or a malfunction in the VTEC assembly.
Potential Causes: Low Engine Oil
Plugged Oil Passage
Insufficient Oil Pressure
Plugged Oil Screen
Insufficient Oil Volume
Malfunctioning VTEC Oil Pressure Switch
Defective VTEC Solenoid

Jul 13, 2009 | 2004 Honda CR-V

1 Answer

Y reg Discovery will not rev more than 2500 rpm.


Sounds like it's not boosting, and the engine is stopping you from doing damage - check the wastegate modulator (solenoid on the side of the engine in front of the turbo and under the air intake pipe). Also check that the breather hose has not worn through the wastegate actuator causing a vent to atmosphere. If these are fine, then you may have a vacuum problem - are the brakes ok?

Jun 23, 2009 | 2004 Land Rover Discovery

1 Answer

92 prelude si (auto)


With normal acceleration the 1st to second shift point should be around 2500-3000 rpm. Most of your shifts under moderate acceleration will take place at this same point or when there a light load on the transmission. Under hard acceleration the RPMs will climp higher due to increased power needs and the computer will shift when less power is needed or the RPMs climb to an unsafe speed say5000-6000rpms (depending on where yours redlines). Also going up a steep hill will raise the RPMs higher and goind down a hill will cause a faster shift at lower RPMs. These can always be altered by an individual owner by adjusting shift points, using performance parts and if you have problems (low tranny fluid/trans issues). Your trans RPMS are fine and will vary depening on how your foot accelerates. The shift pattern should be the same every time you drive slow/medium/fast/, look for changes in those patterns you will also catch a problem early.

Jun 14, 2009 | 1992 Honda Prelude

1 Answer

91 talon tsi cuttin out


mine did the same thing take your turbo and ex manifold off look for cracks boost lag and replace any cracked ex parts or even turbo if cracked

Jan 10, 2009 | 1991 Eagle Talon

1 Answer

RPM Oscillating


have you had the vehicle speed control reprogrammed if not that could be your problem

Jun 26, 2008 | 2005 Dodge Ram 3500

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