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Where is the air sensor on a Mazda 121 soho 98

Idle problems -when stop rev goes up and comes down again or when goiing from gear to gear -Revs goes up

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  • Cars & Trucks Master
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The following are the general instructions on the start of diagnosing any electronically controlled engine or transmission problem.

The engine and the automatic transmission (transmission control is only for automatics, engine is still computer controlled no matter the transmission type) in this vehicle are computer controlled and in most cases when a fault occurs a fault code is stored in the memory of the computer control module. There are exception to this, such as the Mass Airflow Meter and fuel pressure problems. What must be done is to have all the basic testing done such as a scan of the system for fault codes as well as a check with a live data scanner tool for engine functions that are not within range of normal, a trained technician is required to know what is correct and what isn't, then based on careful diagnostics done from a factory repair manual the correct part is replaced or the wiring repaired or the computer replaced (known as the PCM or ECM,ECU), which is very rarely the problem. Other basic checks must be done as well such as mechanical problems with the engine as well as engine state of tune and mileage on the engine. The transmission can have mechanical issues as well such as no gear engagement at all or a failed pump or other pressure related problems. Also engine mechanical problems can and do cause many drive-ability related problem such as rough idle and other symptoms.

Posted on Nov 09, 2012

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Posted on Jan 02, 2017

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greesemonkey
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SOURCE: Losing revs and cutting out even when idling and engine is rev'd

clogged intake manifold

Posted on Nov 30, 2008

  • 182 Answers

SOURCE: idle

the throttle position sensor may be bad or you may have a vacuum leak

Posted on Oct 15, 2008

  • 6 Answers

SOURCE: vw polo 1.4 tdi idle problem

Hey.. i just had this exact problem in my GTI and after 2 weeks of trial and error, I had to replace my Coolant Temp Sensor.. it was bad so it threw off the fuel metering valve which was part of the crazy idling problem.. I cant be 100% sure because our cars are not exactly the same but I mean we have the EXACT same symptoms so .. justa suggestion. Use the VAG-COM sensor reader and you'll be golden.

Posted on Mar 17, 2009

  • 2 Answers

SOURCE: Mazda Sentia 929 auto failure

Rebuilt gearbox probably... unfortunately!
If the HOLD light in the in strument cluster is flashing at you, it is giving you a transmission diagnostic code (like a kind of Morse Code). A transmission specialist or a Mazda Dealer will be able to read this code and plug their computer into the cars computer, and tell you what is wrong.

Posted on May 11, 2009

  • 179 Answers

SOURCE: car revs up whilst stopped, idle problems

you need a new oxygen sensor

Posted on May 31, 2009

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Please help me find the heat gauge sensor in a Mazda 121 soho 97 model is located and how to fix it asap please


Mazda 121 2-2 - Scribd

https://www.scribd.com/doc/34263197/Mazda-121-2-2Jul 13, 2010 - Mazda 121 2-2 - Free ebook download as PDF File (.pdf), Text file (.txt) or read book online for free. Workshop Manual Volume2 of 2 ...
images for heat sensor location

Nov 26, 2015 | Mazda Cars & Trucks

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Gday i have a 121 mazda bubble it did have a air leak between carby and the manifold fixed that now the idle bounces between 500 too 2000 revs when idling i have replaced the leads would it be the air flow...


It's possible MAF (Mass Air Flow sensor) but before you replace, reinspect all small vac lines and ports on carb. I'm suspecting you might have missed one. Fluctuating idle is generally a vac leak

Feb 25, 2011 | Mazda 323 Cars & Trucks

1 Answer

I own a 1992 mazda 121 and the engine is cutting in and out. When i press the accelerator and hold it in one spot, the revs go up and down, even when the pedal is pressed at one spot, the engine turns off...


idle control sensor
or fuel delivery problem
correct part depends on what year it was built

e 10 not the best fuel for older 121s
you may have to replace the fuel filter
this site may help a bit ...have to keep flipping pages to get to sections

MAZDA 121 WORKSHOP MANUAL Pdf Download. - ManualsLib

https://www.manualslib.com > Brands > Mazda Manuals > Automobile > 121

Mar 31, 2017 | Mazda 323 Cars & Trucks

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Ive a mx 5 mazda 1992 and ive got a problem with idle on tick over.


when my mazda mx5 is warmed up the engine idles at 800 revs after about 20 seconds the revs drop to 400 revs,after 5 seconds they pickup again to 800 revs,this pattern is continuous.HELP!!!!!

Nov 29, 2009 | 1992 Mazda MX-5

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My mazda soho 121 1998 model speed can only go up 120


speed limiter most likely its a device they install to stop you being able to speed they also make rev limiters, or your engine can only go that fast which i doubt cos 130 pretty low for an engine stop at

Oct 16, 2009 | 1998 Mazda 626

1 Answer

Vw polo 1.4 tdi idle problem


Hey.. i just had this exact problem in my GTI and after 2 weeks of trial and error, I had to replace my Coolant Temp Sensor.. it was bad so it threw off the fuel metering valve which was part of the crazy idling problem.. I cant be 100% sure because our cars are not exactly the same but I mean we have the EXACT same symptoms so .. justa suggestion. Use the VAG-COM sensor reader and you'll be golden.

Mar 15, 2009 | 2001 Volkswagen Golf

1 Answer

My '01 Mustang V6 revs high when in neutral/when changing gears.


sounds more like the IAC, Idle air control valve.. they can be cleaned with carb and choke cleaner gently...

Nov 17, 2008 | 2001 Ford Mustang

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