Question about 1999 Hyundai Accent

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2000 accent p1128

Did you fix the prob if so let me know i have the same prob and mine has misfire

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Dear friend-looking at the fault code it tells me that your vehicle is running lean.plse look at the following:HO2S,FEUL PRESSURE,FEUL SYSTEM,MECHANICAL FAULT,ECM.

Posted on Jul 21, 2009

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Posted on Jan 02, 2017

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1 Answer

Engine management light on-P1128 Manufacturing control


No such code listed (P1128) for 2002 Accent

Aug 29, 2011 | 2002 Hyundai Accent

1 Answer

Code p1128 weak mixture lose power on inclines engine light on melts spark plugs vehicle hyundia accent 2001


Go to www.hmaservice.com and register your vehicle by VIN #..
you'll then have access to wiring diagrams, shop manuals,
service bulletins, illustrations, etc. To diagnose a 2000 or 2001 1.5L Accent Diagnostic Trouble Code (DTC) P1128 (FUEL SYSTEM LEAN -- PART LOAD), check the following:
  • Check the intake system for air leaks.
  • Check that the Mass Air Flow (MAF) Sensor (P/N 28164-22610) operation meets the specifications listed below. If the MAF sensor output is significantly lower than the reference value (10% or more), then replace the MAF sensor.
Table 1: Using the Hi-Scan Pro in the Hyundai Diagnostic Menus Current Data Screen TPS (%) 0
3.5
5.1
7.4
MAF (kg/h) 10
21
30
47
RPM IDLE
2000
3000
4000
Table 2: Using the Hi-Scan Pro in the OBD-II Menus Current Data Screen TPS (%) 0
3.5
5.1
7.4
MAF (g/h) 2.8
6
8.5
12.7
RPM IDLE
2000
3000
4000


WITH MANUAL TRANSMISSION


Table 3: Using the Hi-Scan Pro in the Hyundai Diagnostic Menus Current Data Screen TPS (%) 0
2.4
3.9
5.9
MAF (kg/h) 9.5
19.4
28.8
43
RPM IDLE
2000
3000
4000
Table 4: Using the Hi-Scan Pro in the OBD-II Menus Current Data Screen TPS (%) 0
2.4
3.9
5.9
MAF (g/h) 2.5
5.5
8
12
RPM IDLE
2000
3000
4000

Jun 26, 2011 | Hyundai Accent Cars & Trucks

1 Answer

My hyundai accent 2000 has 25,000 miles and the the check engine light has been on for over 3 months. I know the diagnostic code is P1128. I have had the car to 2 mechanics and they can not say...


P1128 is a lean condition, try cleaning the Mass Air Flow (MAF) sensor. You can buy a can of MAF cleaner at most auto parts store like Auto Zone, and they will have the instructions for you to remove the MAF. Try cleaning it first and then disconnect the battery, just make sure the radio is off first before you disconnect the battery. If the DTC 1128 is still there, the MAF may be bad and needs to be replaced but before you replace the MAF. Check with the Hyundai dealer for any TSB on that code. Good luck and keep me posted. The dealer want $270.00 for the MAF sensor!! ouch!! scouted around...NAPA has them for $105.00. Most local salvage yard for $35.00 - $75.00

Dec 01, 2009 | 2000 Hyundai Accent

1 Answer

2000 hyundai accent code 302 misfire and slow responce o2 senser


Yep!.. Typical with an engine cylinder misfire. Inspect the plug and ignition wire, especially the insulator. If you see a 'christmas tree' pattern on the insulator, that's where your problem is.

Jul 24, 2009 | 2000 Hyundai Accent

4 Answers

Trouble codes P0172 and P1128 - VW Beetle


The code P0172 means...system too rich(cyclinder bank No.1)..and all of the OBDII fault codes begin with a "P0"..i dont know what a P1128 is....i hope this will help you

Jun 28, 2009 | 2000 Volkswagen Beetle

1 Answer

Check engine light


The trouble code P1128 is for a faulty mass air flow sensor or MAP. This is a common problem with 1999-2000 Accents. There is air leakage within the unit and/or the hot wire in the unit is badly contaminated. A bad MAP will cause the vehicle to bog and loose power.

Apr 01, 2009 | 1999 Hyundai Accent

1 Answer

P1128 code on 2000 hyuandai accent


I did some research because the P1128 is an odd code for Hyundai and I couldnt find a lot of information on it, but I found two things that may help and neither point to the fuel pump.

1. P1128 in Hyundai refers to the Mass Airflow Sensor or MAF being defective.
2. There is a TSB from Hyundai, TSB 01-36-022, but I wasnt able to ascertain if that was a specific TSB for the MAF or if it was information on how to test the MAF or some other information.

P1124 seems to be a related code as well but I could find little on it. P1124 in a Subaru is an issue with the Throttle Position Sensor or TPS, but I could not confirm that for Hyundai.

My first suggestion would be to check your air filter and if it has not been changed in a while or is really dirty, then change it as a restriction in air flow might be mistaken by the computer as a problem with the MAF.

Jan 02, 2009 | 2000 Hyundai Accent

2 Answers

What's Wrong!!!


Could be bad motor mounts, does your motor rock back and forth a lot when you rev it.

Jun 25, 2008 | 2000 Hyundai Accent

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