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My 2000 Mitsubishi galant 2 4 l idols at 1000 rpm and vibrates with a knocking sound i have the mass air sensor disconnected if i connect it it shuts off right away just tunned it up rebuilt intake manifold with new throttle body and fuel pump also a new mass air sensor what could it be

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  • 6 Answers

Clean your air flow sensor

Posted on Apr 27, 2014

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6ya6ya
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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: 000 NISSAN Xterra -- after warming up, loses RPM by 500-1000..... have replaced ignition wires and distributor, checked mass air flow sensor and OK.....

I had a problem on my Nissan Xterra 2000. Symptons sound similar. In my case, it ran fine for a while and then suddenly the engine starts to stumble and lose output. At one point it did not even have enough HP to move. Irregular idling too. Thought it was water in my fuel. Bought water remover from the store and added to gas tank. Problem did not go away. Instead, "Service Engine Soon" light came on. Had to have it towed to the dealer as there was no way the engine could keep up with traffic. Dealer replaced the "Crank Position Sensor" today. Parts $33.00, Labor: $300 (about 3 hrs worth of work). Seems to work fine now but I will wait and see. Dealer also stated that Distributor bearing appears to be noisy and will need to be replaced sooner or later. I will wait for it to go before I fix that.

Posted on May 27, 2009

dnewcombe1
  • 1564 Answers

SOURCE: knocking noise in 2000 beetle under 1000 rpm

You might need a new Knock sensor.

Posted on Aug 13, 2009

  • 321 Answers

SOURCE: buick lesabre nightmare 2

  • The PCM doesn't even see the O2 sensor until engine temp has reached operating temp,the vehicle goes from open loop when cold,to closed loop when warm,where the PCM uses the O2 sensor to measure the rich/lean of the exhaust content,and from that,adjust fuel richness to achieve 14.7 to 1 air/fuel ratio.So when cold,the O2 sensor is out of the picture anyways.When unplugging sensors,it can be deceitful.The PCM has a program whereas,if a critical sensor (such as the mass air flow) is somehow damaged and out of the picture,the PCM will substitue a generic value that will allow the engine to stay running.So,by unplugging the MAF,it did try to run on it's own better than plugged in,there's the problem area.The vehicle is running better with the MAF unplugged,because the MAF is likely bad,and the PCM is substituting it's generic value when it IS unplugged.Something to recheckThe PROM update is a newer program for the PCM,and likely won't fix it unless the PCM is bad.I would try a good used PCM as a last or later resort,because i have seen my fair share of defective PCM's too.I have taken some PCM's apart,and found capacitors that had gone bad and leaked all over the circuit board,mostly Honda and Mitsubishi and Chrysler though.Good luck,keep me posted.

Posted on Aug 01, 2008

  • 14036 Answers

SOURCE: 2002 Mitsubishi Galant gets poor acceleration.

LOOK AROUND THE AIR INTAKE HOSE.MAKE SURE IT IS INTACT NOT LOOSE.CHECK ALL VACUUM HOSES ON INTAKE.MAKE SURE THEY ARE IN PLACE.

Posted on Aug 17, 2009

  • 396 Answers

SOURCE: 1998 GMC Sierra 2500 5.7L

starting definately has a lot to do with the crank/cam position sensors, but it wouldnt have nothing to do with hot or cold weather, oxygen sensor will make the vehicle run too rich if its out, you will smell fuel very strong out the exhaust, that could make it run sluggish also, and usually if the mass air flow sensor goes out the vehicle wont start at all...

Posted on Nov 27, 2010

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I have a 2000 Mitsubishi Galant and it's reading a P0170 code. I had the oxygen sensor replaced a year ago and one mech thinks it's the fuel tank pressure sensor. How can I access this or fix the problem....


Intake air leaks
- Faulty front heated oxygen sensor
- Ignition misfiring
- Faulty fuel injectors
- Exhaust gas leaks
- Incorrect fuel pressure
- Lack of fuel
- Faulty Mass Air Flow (MAF) sensor
- Incorrect Positive Crankcase Ventilation (PCV) hose connection
If you have a K&N filter, the code may actually be caused because it was over oiled.

Jan 20, 2015 | 2000 Mitsubishi Galant

1 Answer

2002 Mitsubishi Galant P0300 Intermitent Miss between 2500-3000 rpm


Have you checked fuel pressure? Random misfires (0300) are usually related to fuel, spark, or compression issues-one of those is not right.

Jul 27, 2014 | 2002 Mitsubishi Galant

1 Answer

Motor shuts down when reaching normal operation temp


Sounds like the mass air flow sensor or the air intake temperature sensor. Sometimes just wiping out the throttle body/air intake can make all the difference

Good Luck and Happy Motoring

Jun 22, 2017 | 2000 Dodge Durango

1 Answer

When starting my 95 camaro and the rpm drops to idol my car vibrates like it is not getting enough gas and acts like it will shut off


Is the RPM correct,should be 800RPM, You have a MAF (mass air flow) and a MAP sensor,also a IAC.(Idle air control) Depending on the engine size you have both a MAP and MAF, so basically you need to inspect for a broken vacuum line at the MAP sensor,you also need to look for false air,which is a broken vacuum hose affecting the idle.3_17_2012_3_31_56_am.jpg

Mar 16, 2012 | Cars & Trucks

1 Answer

I have a 96' galant runs some time's but wont stay running it surges between 1500 /2000 rpm's it might run for a while then shut down. I've changed the tps ,map, mass air, sensor, spark...


The condition you describe is usually caused be a vacuum leak. You should check all vacuum hoses for tightness.
Maybe PCV valve or things on that system.

Jul 22, 2011 | Mitsubishi Galant Cars & Trucks

1 Answer

Jerking, slow up hill, engine service light on. no gas seems to get to engine


Hi

This is one of 2 faults common with this car.

Either the EGR valve "exhaust gas recycler" or the air mass sensor also known as the MAF sensor.

I would bet on it being the EGR as the engine light is on, you can remove this and clean it, that often does the trick. also you can clean the air mass sensor, certainly worth a go as these can be expensive parts. the air mass is pretty chep but the EGR can be a few hundred dollars.

Hope this helps
Get back to me if you need more info.
Regards
Dan

Jan 04, 2011 | 2000 Mitsubishi Galant

3 Answers

Where is the MAF sencor located on 2000 Galant


in the inlet air pipe from the air filter to the manifold

Dec 02, 2010 | 2000 Mitsubishi Galant

2 Answers

Idle surging chugging weird problem READ!!


hey common problem w/the 2000 galant. you may need a mirror to see this, look and or feel where your throttle body mates up to your intake manifold. it has a problem of cracking, when you have an air leak there it will run like **** and usually shut off depending on the severity. this will cause you to get the throttle position malfunction code. if that is the case instead of buying a new or used intake manifold. take the old one off, and you can actually cut it flush and weld about a 2 inch in length tube to repair the crack. well let me know how it goes.

Jan 02, 2009 | 2000 Mitsubishi Galant

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