Question about 1995 Nissan Maxima

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1995 nissian pick up with z24 motor (fuel injection) engine won't rev above 2000 rpm's but when you pour fuel down the intake and open the butterfly engine will rev well above 2000 rpm.

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Check the tps on the output side with a voltmeter, it should vary from zero to five volts

Posted on Mar 28, 2011

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Hyundai accent 1500 1995 model fuel injection car will not rev higher than 2500 rpm


Try changing your fuel filter, if that does not fix your issue I would have the catalytic converter changed.

Jul 20, 2016 | Hyundai Motor 1995 Accent

1 Answer

2004 ford f 150 5.4 3V pulled intake fixed vac hose came off replaced imrc & still show intake runner control closed bank 1 Still has no power when I get in it to pass something any ideas?


Is your check engine light on ? Any codes ?

There are three basic types of intake air sub-systems:


  • Intake Manifold Runner Control (IMRC) electric actuated system

  • Intake Manifold Swirl Control (IMSC) vacuum actuated system

  • Intake Manifold Tuning Valve (IMTV)

These subsystems are used to provide increased intake airflow to improve torque, emissions and performance. The overall quantity of air metered to the engine is controlled by the throttle body.

Intake Manifold Runner Control (IMRC) Electric Actuated System
The Intake Manifold Runner Control (IMRC) Electric Actuated system (Figure 107) consists of a remote mounted motorized actuator with an attaching cable for each housing on each bank. Some applications will use one cable for both banks. The cable or linkage attaches to the housing butterfly plate levers. The 2.0L (2V) Focus IMRC uses a motorized actuator mounted directly to a single housing without the use of a cable. Each IMRC housing is an aluminum casting with two intake air passages for each cylinder. One passage is always open and the other is opened and closed with a butterfly valve plate. The housing uses a return spring to hold the butterfly valve plates closed. The motorized actuator houses an internal switch or switches, depending on the application, to provide feedback to the PCM indicating cable and butterfly valve plate position.



Below approximately 3000 rpm, the motorized actuator will not be energized. This will allow the cable to fully extend and the butterfly valve plates to remain closed. Above approximately 3000 rpm, the motorized actuator will be energized. The attaching cable will pull the butterfly valve plates into the open position. Some vehicles will activate the IMRC near 1500 rpm.



WARNING: SUBSTANTIAL OPENING AND CLOSING TORQUE IS APPLIED BY THIS SYSTEM. TO PREVENT INJURY, BE CAREFUL TO KEEP FINGERS AWAY FROM LEVER MECHANISMS WHEN ACTUATED.




  1. The PCM uses the TP sensor and CKP signals to determine activation of the IMRC system. There must be a positive change in voltage from the TP sensor along with the increase in rpm to open the valve plates.




  1. The PCM uses the information from the input signals to control the IMRC motorized actuator based upon rpm and changes in throttle position.




  1. The PCM energizes the actuator to pull the butterfly plates open with the cable(s) or linkage.




  1. The IMRC housing contains butterfly plates to allow increased air flow.

Jun 29, 2015 | Ford Cars & Trucks

1 Answer

How do you adjust idling


Idling is adjusted differently on different vehicles. There are diesel engines, and two main types of injection, either from a high pressure pump to the injectors, or the so-called common rail injectors where injection is supplied by a high pressure pump but controlled by electronic signals.
Gasoline (petrol) engines have either carburetor systems where the carburetor turns the fuel into a gas before it enters an intake manifold which supplies the intake valves with combustible gas, or a common fuel injector which does basically the same, but the gas is produced by a single computer controlled sprayer. The final way of getting gas into the cylinder is to use injectors similar to diesel injectors, such as the VW Jetronic or K-tronic system.
Idling is adjusted on most engines by controlling the amount of gas which is allowed by a butterfly valve to pass into the intake system.
On an old style carburetor there is an air needle valve at the base of the carburetor which must first be adjusted to get the correct gas/air mixture necessary for the engine to idle, then the butterfly stop screw, which is also mounted on the base of the carburetor, but which is open to see. This will physically open or close the butterfly valve to increase or decrease the engine rpm.
However, we are moving more and more into the era of computer control, and the best answer to your question is, Take It To A Specialist!

Aug 14, 2014 | Cars & Trucks

1 Answer

Reasons for cylinder misfires


Ford coil on plug systems are multi strike ignition (spark) under 1300 rpm then go to single strike a single cylinder misfire can be created by several things . #1 Test engine compression on a cranking engine compression it should be around 150 lbs but if gauge reads different COMPARE to other cylinders that work fine #2 check engine running compression this will be around 120 lbs then rev over 2000 rpm and check pressure drop again COMPARE to other cylinders that work fine. any drop would indicate valve train problems. #3 All internal engine is fine then external problems are present vacuum leaks and or fuel injection volume is low.

Jul 23, 2014 | 2003 Ford Thunderbird

2 Answers

Trouble shooting high idle on f150


Sounds like you have a Vacuum LEAK.. Spray Starting Fluid around and see if you can locate the leak to fix it. If this is a EFI, the common issue is the IDLE AIR CONTROL (IAC)

Apr 15, 2013 | 1988 Ford F 150

1 Answer

Motor wont idel right drops down to 500 rpm and trys to stall but then goes away and will run right and not happen for a wile 1.9 in a 1995 saturn sc2. the car normal idel is 750 rpm.


You might want to check the air intake. find where the mass airflow sensor is at, usually at the end of the tube that brings in the air throught the air filter. Detach and check the butterfly to see if it is clean. You can buy an inexpensive cleaner and use a screwdriver to help keep open the butterfly so that you can clean just inside the butterfly and in front. This should help.

Jan 29, 2010 | 1999 Saturn SL

3 Answers

Random missfire


check your plug wires,and coil pack,it sounds like your having a misfire under load,what motor is in truck?

Mar 30, 2009 | 1996 Dodge Dakota

2 Answers

1995 cavalier z24 running rough


check all your plugs and wires

Jan 29, 2009 | 1995 Chevrolet Cavalier

4 Answers

At idle the engine revs up and down


engine lite on? would ck to make sure there is plenty of coolant in system. low coolant may cause idle hunting. also could have a vacuum leak or air intake restriction. ck air filter

Nov 30, 2008 | 2000 Volvo V70

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