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P1131 HYUNDAI Is that a fuel pump fail?

The engine have bad start.

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Well, four digit codes are brand specific. Code 1131 for a Hyundai involves the fuel injectors and the mixture. The computer can not adjust the fuel mixture by normal means.
The problem could be one of the injectors, or the fuel pressure, or something else.
If the fuel system has low or zero fuel pressure the pump could have failed.

Posted on Jul 11, 2013

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Posted on Jan 02, 2017

280zlvr
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SOURCE: car doesn't seem to get enough gas to engine

check pressure on fuel rail using propper fuel pressure gauge if its not to manufacturers specifications replace fuel pump if it is to manufacurers spec then replace fuel pressure regulator on the fuel rail thanks good luck with projects

Posted on Jun 30, 2008

  • 2317 Answers

SOURCE: car doesn't seem to get enough gas to engine

Have you done a tune lately on the car?
I would also suspect a fuel pump problem is you've done a tune up recently.

Posted on Jul 11, 2008

  • 19 Answers

SOURCE: 2003 Hyundai elantra

Hi there they are known to have dramas with the pick up for the immobilizer i would be getting that checked first before spending money on something .else

Posted on Sep 03, 2008

  • 5 Answers

SOURCE: Where is the fuel pressure regulator located on an 2002 f150 v6?

in the center of the motor,in the rear on the fuel rail

Posted on Jan 19, 2009

litoshop
  • 298 Answers

SOURCE: why is my hyundai accent 1.5tdgsi fuel not pumping

first check if the pump is activating by opening the fuel tank and listening remember some one has to be turning the ignition switch if you here the pump the you have a fuel injector pulse problem if you don't here the pump then check your fuses and the relays if thats ok then check if you have power on the red wire in the fuel tank if thats ok then you need a fuel pump

Posted on Jul 19, 2009

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My hyundai tucson 2008 model is turning but won't start, what might be the problem


It could be a list of problems that cause your situation. This is a partial list:
  1. NO GAS
  2. PLUGGED FUEL FILTER
  3. NO SPARK
  4. BAD DISTRIBUTOR ROTOR
  5. BAD FUEL PUMP
  6. BAD FUEL PUMP RELAY
  7. BLOWN IGNITION FUSE.
There are only three things an engine retires to run:
  1. FUEL
  2. AIR
  3. SPARK
It won't run with any one of these missing.

Dec 28, 2016 | Hyundai Cars & Trucks

2 Answers

What does code p1131 mean on a 2001 ford taurus


P1131 Ford
P1131 Ford - Lack of Upstream Heated Oxygen Sensor Switch Sensor Indicates Lean Bank 1

Repair Importance Level: 3/3

Repair Difficulty Level: 2/3

http://engine-codes.com/p1131_ford.html

Forum Code

Possible causes

- Faulty Oxygen Sensor

- Vacuum leak affecting bank 1 only

- Fuel injector problem bank 1

- Check for cylinder misfire on bank 1

- Engine mechanical condition

Tech notes

Though the Oxygen (O2) sensor, the Engine Control Module (ECM) has detected a lean system, which means that there is either not enough fuel or and excessive amount of air in the system. Start by checking for vacuum leaks.

When is the code detected?

The Engine Control Module (ECM) detected bank 1 oxygen (O2) at its lean limit

Possible symptoms

- Engine Light ON (or Service Engine Soon Warning Light)

P1131 Ford Description

A Heated Exhaust Oxygen (HO2S) sensor indicating rich at the end of a test is trying to correct for an over-lean condition. The test fails when the fuel control system no longer detects switching for a calibrated amount of time.

Read more: http://engine-codes.com/p1131_ford.html#ixzz3izk89wMu

Aug 16, 2015 | Ford Cars & Trucks

1 Answer

My hyundai excel sprint 97 will rotate but won't start?


if spark is good and engine is good test fuel works, does it?
why gue$$ are that rich>??????

here watch scotty, its not perfect he assumes engine is good.
in fact timing belts slip every day, and no engine stated, so........


http://www.youtube.com/watch?v=064Ilsz8Fzg&NR=1&feature=fvwp

cranks but will NOT start.
what was changed only makes it harder , as new parts can be bad.
guessing is real bad.
guessing can very easily compound (and confound) any problem.


Jul 15, 2014 | Hyundai Excel Cars & Trucks

1 Answer

P1131


Check Engine lights are the worst. The OBD2 code P1131 suggests a problem with the fuel air mixtures. Often though, the check engine alerts result from failing or faulty sensors rather than from what the sensor is suggesting. It is advisable to check the sensor first.
Good luck!

Jul 01, 2013 | Mazda 626 Cars & Trucks

1 Answer

2004 Hyundai Santa Fe will not start on the first try. Just keeps cranking...


Could be a problem with the fuel pump relay or check valve in the pump.
The relay may not be powering the pump, and the check valve may be letting fuel to flow back into the tank when the engine is off.
If the relay has failed, the pump would not have power until the engine has oil pressure. If the check valve in the pump has failed, the fuel line would have no pressure at first crank.

Dec 11, 2012 | Cars & Trucks

1 Answer

Code p1131 please help


P1131 - Lack Of HO2S Switch - Sensor Indicates Leanxicon.jpghttp://engine-codes.com/p1131.htmlForum CodePossible causes- Vacuum leak affecting bank 1 only
- Fuel injector problem bank 1
- Check for cylinder misfire on bank 1
- Engine mechanical condition
- Faulty O2 sensor. Symptoms- Engine Light ON (or Service Engine Soon Warning Light)P1131 Description A Heated Exhaust Oxygen (HO2S) sensor indicating lean at the end of a test is trying to correct for an over-rich condition. The test fails when the fuel control system no longer detects switching for a calibrated amount of time.

Jul 25, 2012 | 2009 Tata Indigo GLS

2 Answers

Has gas to fuel rail,fire to spark plugs.Will not start...timing belt not broken. code reader showing an P 1131 code.


P1131 -1. Misfire on bank 1
2. Vacuum leak affecting bank 1
3. Fuel injector problem bank 1

P1130 - 1. Fuel pressure high or low
2. MAP sensor dirty/defective
3. Vacuum leak on engine
4. Leaking fuel injector or fuel pressure regulator

Dec 16, 2010 | 1998 Ford Escort

1 Answer

Hyundai Elantra 2000, engine light code 1128


Code 1128 on a Hyundai is a lean mixture fault
http://www.freeautomechanic.com/diagnostictroblecodes11.html

"lean" means the engine is not getting enough fuel. Or the sensor is indicating a lean mixture.
Causes include...
oxygen sensor or wiring bad- located in the exhaust pipe
plugged fuel filter- located in the fuel line, specific location varies by car
MAF sensor or wiring bad (Mass Air Flow).- located in the air intake
low fuel pressure due to failing fuel pump or failing pressure regulator.
leaks in the intake manifold
leaking or disconnected vacuum lines



Jan 08, 2010 | Hyundai Elantra Cars & Trucks

1 Answer

Engine shuts down


This is probably a bad fuel pump. Maybe the fuel pump is going bad gradually, wherein it will work now and fail after. Consider replacing your fuel pump.

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Mar 24, 2009 | Hyundai Motor 1993 Excel

1 Answer

2000 hyundai


It sounds like the fuel pump is getting a bit weak, and when you remove the filler cap, this relieves pressure within the fuel tank. A good local mechanic should be able to quickly test the fuel pressure generated by the fuel pump. Many auto parts stores sell a fuel pump pressure tester. But working with fuel lines and raw fuel isn't a good idea unless you know what you are doing. It could be the fuel pressure regulator valve, but this is less likely.

Possibly your engine could have a serious vacuum leak somewhere on its intake side of the engine, but you would have other symptoms aside from the specific symptom of having difficulty starting the car after filling the car up with gas.

It occurs to me that the following test might indicate a failing fuel pump:

After driving for a while (at least 10 minutes), turn off the car, then take the gas cap off to relieve tank pressure, put the cap back on, and then see if you have difficulty starting the car. If you do, then a failing fuel pump is the problem. Well, at least if this test confirms the problem, its better than suddenly being stranded when the fuel pump does completely give up the ghost! :-)

Feb 18, 2009 | 2000 Hyundai Accent

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