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How to reset the ecu

Low power

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Mitsubishi Mighty Max has 170,000 miles on it and maintenance light came on and will not go off


Yes, unplug the battery for 30 seconds, and the ECU will reset. If the light comes on again, get the error code read to see what the ECU thinks is the problem. At 170,000 miles, this is likely burning oil causing a misfire, might be the engine temp sensor wires are broken (causes hard starts when cold), might just be low power steering oil or even worn brake pads causing a low brake fluid level.

Apr 04, 2014 | 1995 Mitsubishi Mighty Max

1 Answer

Indicator lights all come on and stay on for 15 seconds


100% normal.?
but 15 is a tad long.
low car battery>?

the operator guide in all cars tells you this is the self test.
most are 5 sec, max.
the newer the cars , they seem longer, (more craap to test)

one lamp is the CEL is it 15seonds,
yes/no.
the CEL is 100% ECU controlled,
and if too long , that means its :
1: got low power , 12vdc too low. , better is 12.6v rested.
2: ECU is seeing huge faults. (scan it and see)
3: ECU bad.
in that order. no others.

first post for this world wide, never seen this or heard it ever.
of 1000s posts.
elaborate. please

Feb 14, 2014 | 2001 Toyota Celica

1 Answer

My 2004 Suzuki Aerio will not start


the scanner drops out when the power voltage drops too low.
so your 12vdc the ECU is tool low. use volt meter
to find the voltage drop point.
you mean no spark, fire is what fuel does when ignited.
and spark is first. if no spark say, i have no spark to 4 cylinders.
my guess is this.
lost DC power to ECU.
this kills spark
and loss of spark kills injection so, lost power kills injection 2 ways.
find this problem by watching spark and power to ECU.
the ECU will drop out about at 9v.
cranking the voltage usaully sags to about 11v cranking.
now you have a goal 11v min, to ECU at all times.(cept siberia)

Mar 28, 2013 | 2004 Suzuki Aerio

2 Answers

Codes reading po300,301,303 on kia rio 2009 after replacing timing belt


Well the codes are for a random miss, and a miss on cylinders one and three.
Its possible the valve timing is off and those cylinders are low on compression, or something happened to the cam sensor.

Feb 09, 2013 | Cars & Trucks

1 Answer

Where is 2003 chevrolet tahoe ecu fuse


The ECU will not have anything to do with those issues. ECU or ECM is for "engine control module/unit". Sounds like you have a bad wire.

Oct 14, 2012 | 2003 Chevrolet Tahoe

1 Answer

Power steering pump is not working and i need to replace it but sumone side i need to reset ecu how do i do that its 2001 1.4 peugeot 307


The ECU shouldn't have anything to do with changing your power steering pump. If you want to reset it and definitely need to change the pump, Kill two birds with one stone. Disconnect the battery while you change the power steering pump. When you're finished changing the pump, sufficient time will have elapsed so that when you reconnect the battery, the ECU will be reset. Just bear in mind that when you do this, any devices that use a memory (radio presets, clock, etc.) will need to be reset to your preferences.

Jun 26, 2011 | Peugeot Liberte Cars & Trucks

2 Answers

Low coolant lite stays on but car does not overheat and fluid level is good


reset your ecu if it comes back on and everthing checks 100% fluid level and thermostat your ecu is faulty and need a new one

Nov 03, 2009 | 2003 Chevrolet Impala

1 Answer

Loss of power


Check if putting back good fuel would help. If it does not reset the car's ECU by removing the negative cable of the battery for 1-2mins. Have the knock sensor of the car checked. It should adjust the timing for the ignition to compensate for lower octane of gasoline.

Aug 23, 2009 | 1999 Cadillac DeVille

1 Answer

4/4 stuck in 4 low


Take off the positive and neg. battery cables, making sure the positive doesn't come in contact with any metal. Leave it off for 5 min. or so. This will reset your ECU or on-board computer to its default settings. Reconnect the battery cables and see if this clears your issue. Like every other computer it can have its data missed up. Its basically a reboot for ECU.

anaanymous

Oct 11, 2008 | 2000 Chevrolet Silverado 1500

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