Question about 1991 Oldsmobile Cutlass Ciera

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Has a code 43 and engine will go to 3000 rpm mandomly and remain there exhaust becomes red hot

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  • donkilla33 Sep 04, 2010

    Should replace both censers map and knock?

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There are two codes which mostly comes. Code 33 is the MAP sensor, and code 43 is knock sensor. Check and replace both the sensors.This will help. the knock sensor is located at the rear of the block on the right hand side. It is round with a signal wire going to it. This would be looking up from the bottom of the car. Thanks. Keep updated for any more query. You can rate this solution and show your appreciation

Posted on Sep 04, 2010

  • raj somaiya
    raj somaiya Sep 05, 2010

    First replace knock sensor and check.If still the problem then go for map sensor replacement too.
    but first knock sensor.
    Thanks for keeping updated with your query.

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What does the obd2 code p0015 mean please


This error code indicates that the exhaust overhead cam is out of position. The belt/chain or sensor has a problem.

Hope this helps? OBD II Code P0015


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Feb 23, 2017 | Cars & Trucks

1 Answer

Whats the valve clearance for my Diahatsu Mira 1998 850cc?


Mira 847 cc 1993- Engine Code ED 10
Ignition data
  • Ignition system type: El-ecu
  • Ignition coil make/type: Dia/-
  • Supply voltage: 12 + Volts with ballast resistor
  • Primary resistance: 1.35-1.65 Ohms
  • Secondary resistance: 22000-30000 Ohms
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  • Contact breaker gap/air: 0.2-0.4 mm
  • Dwell angle: Deg\par Ignition Timing - unleaded: 5 2/900 Deg eng/rpm (without vacuum)
  • Ignition Timing - leaded: Deg eng/rpm (without vacuum)
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  • Firing Order: 1-2-3
  • Spark plug make: Bosch
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Fuel System
  • Fuel type: U/L
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  • CO level at idle speed: 1.0
  • 0.5 Vol %
Engine Data
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  • Valve clearance - exhaust: 0.30 (hot)
  • Compression pressure: 1.2-1.5 bar
  • Oil pressure: 2.5-5.6/3000 bar/eng/rpm
  • Radiator pressure cap: 0.6-1.05 bar/type
  • Drive belt 1 - size: 9.5x925/KDB 925 mm/type
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Electrical System
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Other data
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Oct 30, 2014 | 1996 Daihatsu Mira

1 Answer

Exhaust glows red hot


Mazda rx 8 creates a lot of heat, to fix this you must change out the coolant every 20k miles, with the mazda brand coolant i think its called mazda f22 coolant, the engine stays hot due to the high RPM engine, you may want to check: ignition coils, cat, coolant, and do a compression test.

Apr 19, 2014 | 2004 Mazda RX-8

1 Answer

I have vitz 2006, 1300cc, when i starts the car and start driving its response are fantastic mean pick up is excellent and no knocking, but as the engine became hot, the pick became DULL, and engine s


The reasons are follows:
- Contaminated fuel.
- Knock sensor poor performance.
- Check exhaust system. If clogged, remove or replace the honey comb porcelain.
- Check ignition timing with scan tool at idle speed. (5 - 8 degrees BTDC).
- Check engine oil level. If the oil level is low, it may be one of the reasons for knocking, because oil may be burning during the combustion.
- Check fuel pump pressure. ( 41 - 49 psi).
- Remove negative battery terminal for 5 Sec or more. Reconnect the terminal. Close all doors, remove all electrical loads like room light, parking lights, blower motor etc. Start the engine and hold the throttle at 3000 rpm till the radiator fan becomes on to complete the idle speed relearn process. Release accelerator pedal after the radiator fan becomes on, and let it idle for 7 min more.
- Switch off the engine for 3 sec and you can then start and drive the car comfortably.
Hope that works.

Mar 21, 2014 | 2006 Toyota Yaris 1.5

1 Answer

I have a 2002 Kia Sedona that is gettting codes P0421, P0431 consistently and P0456 rarely. Can one determine if the cc's are working by the exhaust smell? I have had the threshold codes since I b


Trouble Code: P0421
Main Catalyst Efficiency Deterioration (Bank 1)
Trouble Code Conditions: DTC P0136, P0139 and P0140 not set, engine running at 3000 rpm or high in closed loop at 45-60 mph for 140 seconds, and the PCM detected the rear HO2S and front HO2S signals were too similar.
Possible Causes:


Air leaks at the exhaust manifold or in the exhaust pipes. Catalytic converter is damaged or has failed . Front HO2S or rear HO2S is contaminated with fuel or moisture. Front HO2S or rear HO2S heater is damaged or has failed. Front HO2S or rear HO2S is contaminated with fuel or moisture. Trouble Code: P0431
Main Catalyst Efficiency Deterioration (Bank 2)
Trouble Code Conditions: DTC P0150, P0154, P0159, P0158, P0160 and P0161 not set, engine started, engine running at 3000 rpm or high in closed loop at 45-60 mph for 140 seconds, and the PCM detected the rear HO2S and front HO2S signals were too similar in the Catalyst Monitor test.
Possible Causes:


Air leaks at the exhaust manifold or in the exhaust pipes. Catalytic converter is damaged or has failed. Front HO2S or rear HO2S is contaminated with fuel or moisture. Front HO2S or rear HO2S heater is damaged or has failed. Front HO2S or rear HO2S is contaminated with fuel or moisture .

Jul 24, 2012 | Cars & Trucks

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

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1 Answer

2003 pajero 3.2 smokey when cold . code 25 and 43 and 12 stored .when warmed up and hold it at 2000 rpm the smoke will bellow and engine will run rough and will not rev above 3000 rpm. Will drive ok...


Sounds like you have some valve guide seals bad or broken rings on the pistons that is if it is an oil smoke.If it is a flood smoke it sounds like you have an 02 sensor that has went bad.

Feb 02, 2011 | 2001 Mitsubishi Montero

1 Answer

Engine stutters. wont go above 300o rpm


most likely the exhaust is plugged (cat converter) you can take it most any exhaust shop & they should test it for free.

Dec 18, 2009 | 2004 Hyundai Santa Fe

5 Answers

Engine surging , won't accelerate over 3000 rpm ! IS chocking is like is not enogh gas


Could also be fuel filter/pump.

Nothing is easy when it comes to older exhaust systems... But if you want to bypass the cat then do that. Seperate the exhaust system before the cat. But not before the oxygen sensors. It will be loud and just run it to verify if it's the problem. Cars are designed to have the cat there under normal conditions. Unlike older cars :)

Jul 02, 2008 | 1998 Nissan Maxima

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