Question about 1999 Mazda 626

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Check engine light on, codes says run lean

Doesn't always start, when starts almost stalls, idles low

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  • Mazda Master
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It would be good to have the actual trouble code.
Have you checked the fuel pressure yet ?

Posted on Jan 23, 2013

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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: engine bogs and stalls

Check the air filter hose. My '99 Protege was idling rough and would sometimes shut off. The air filter hose was cracked half way around. I replaced it (easy just loosen two hose clamps and pull out the sensor) and the car is running fine.

Posted on Dec 27, 2008

  • 1 Answer

SOURCE: CHECK ENGINE CODE P2187 SAYS

i had the same code, p2187. check to the left of the throttle body(side facing the front of the veh.
there are 2 vaccum hoses going into the intake. the larger one on top has a spring clip holding it and if you look under that you'll see a smaller one with a check valve. mine was disconnected. plugs in under the larger one.

Posted on Feb 07, 2009

  • 3 Answers

SOURCE: engine light on 2002 mazda protege is on even after changing o2

Try cleaning the Mass Airflow (MAF) Sensor. My 2002 Protege check engine light came on and it started stalling at stoplights if I didn't keep the engine revved a little. Manager at AutoZone checked the computer code for the light (P0171?), and it said it was running lean. He suggested I try the MAF sensor cleaner they have ($6.99) rather than replacing the 02 sensor, etc.; it made a *significant* difference. (I think I need to do it again to get it totally cleaned out, but the can is for at least 4 cleanings.) The MAF sensor is the large component that air goes through right after the air filter. If you don't have the repair manual for the car (search online for PDF's), you search for the part online to see what it looks like. Mainly, it's a tube about 4" across with some small wire things inside. The cleaner can said it was a 10 minute job; mine took 20 minutes, but only because the tube leading from the MAF sensor to whatever is next (a kind of bent elbow tube, with a couple of accordian-style ripples) tore, and I had to duct-tape that up to seal it. (Still haven't gotten that replaced - found them online for ~$40. Maybe this weekend...)

Posted on May 16, 2009

roniecon
  • 6826 Answers

SOURCE: running lean at idle & rough idle stalling.

Replace the fuel filter,have the fuel pressure check,it is most likely the fuel pump.

Posted on Jan 28, 2010

  • 1 Answer

SOURCE: Rough idle, failing power brake assist

p2197
po154

Posted on May 13, 2010

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1995 NISSAN MAXIMA STALLING WHEN IDLING


Is there a check engine light on? Does it run well at other speeds? A stall at idle could be from a low idle ( the idle may have to be relearned using a shop computer). You may have a vacuum leak on a hose leaning out the motor and causing a stall. I would scan test the check engine for codes if it is on and possibly give yu a basis to start

Apr 06, 2015 | 1995 Nissan Maxima

1 Answer

Code says system running too lean Bank1 and at stoplights I have to put car in neutral or it will stall


Lean Bank1 can be attributed to a faulty oxygen sensor or by unmetered air entering the system. A comon problem with the protege is cracks in the plastic air intake hose after the MAF which sucks air in that is not registed by the car and thus make it run lean and idle poorly
.
Another comon problem causing rough idle is the EGR valve being stuck because of carbon deposits, this will usually throw an EGR related check engine light but not always.

Feb 11, 2013 | 2000 Mazda Protege

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My 2000 Ford Expedition 5.4L V8 4x4 idles really bad when stopped at a red light. Sometimes it will just stall. It always starts back up. It goes just fine when I hit the gas, real smooth and powerful. It...


Check the idle fuel pressure. Load the electrical with headlights and heater defrost etc and see if problem gets worse. Attempt again with all accessories off. Could be fuel pump is getting low voltage at idle or fuel pump is failing. Bad fuel pump would definitely be a problem high fuel demand. Check vacuum line between pressure regulator to intake manifold.

Check for a air leak in the intake manifold. Gasket/hose etc. The P0171/P0174 is an indication that not enough fuel or tow much air. You can sometimes hear the air leak during idle.


Best solution is to use a graphic capable scan tool and watch the fueling trim/idle.


scan-tool-software-graph-a-rikgbt5tk1ywbo1m3dxzkw2o-3-0.gif

Mar 04, 2017 | 2000 Ford Expedition

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1993 mercury villager check engine on with code 32 and 34. repair manual says the code 32 doesn't bring the check engine light on but the 34 does. code 34 says problem with the egr valve solenoid or...


After awhile these idle screws don't have a lot of effect, the throttle body & injectors are also probably dirty. The 1.5 turns out from a soft seat is a starting point. Go another 1 to 1.5 turns out to find the sweet spot. Pour a can of Seafoam in with about 1/2 tank of gasoline. That will help clean the injectors & combustion chambers. Clean the throttle body with throttle body cleaner, make sure there is no carbon around the edges of the butterfly and where it seats.
The knocking on starts is most likely from worn bearings. It will knock until oil pressure builds up & is circulating through the journals. I hope this helps.

Sep 24, 2011 | 1993 Mercury Villager

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Occasional stalling at very low speeds with no warning. Sometimes it stalls after driving less than a mile so it doesn't seem heat related. Occasional no start. Starter does crank though. It...


code 17 is camshaft sensor error. a failed camshaft position sensor will show up in a number of ways. The worst-case scenario is that there is no spark in the combustion chamber. Other symptoms related to the position sensor can include excessively long cranking time when starting cold, rough running on an intermittent basis, poor idle, stumbling or hesitation, a drop in mileage and stalling upon acceleration. code 17 is for OBD-I system 1995 and before, OBD-II system 1996 and up. these symtoms can also be caused by bad wiring to sensor. good-day !!

Jul 13, 2011 | Buick LeSabre Cars & Trucks

3 Answers

Car stalls at idle (sometimes), and often acts like it wants to stall at low speed after the engine has been running a long time or in a drive-thru. Symptoms are rough idle, dimming headlights, engine...


I believe you have 2 different problems here. P0410 is the secondary air injection, which only turns on when the engine is cold at first start up for about 20 seconds. All it does is blow extra air into the exhaust to reduce emmisions. There are 3 fuses and items that run this system: Check Valve ($125), Air Pump ($280) and Relay ($50). Prices came from Napa, so I'm possitive you'll find any of these much cheaper elsewhere. My guess is the relay since you have dimming.

Did you recently have the battery disconnected? Trying to address the stalling while at idle. If so, it's your throttle body, needs to be cleaned. If you want instructions on how to do this yourself, let me know, will only cost you about $4. I know the dealer charges about $85 to clean this where I live, which is outrageous! If you do have a shop do the work, make them remove the throttle body to clean it, don't just clean the outside of it.

Even if you don't do this work yourself, at least you know the lingo and shouldn't be surprised.

Good luck!

Jun 20, 2011 | 2004 GMC Envoy

1 Answer

I recently had problems with my 2005 Mazda MPV stalling. I came to this great site and changed the IAC and it stopped stalling. But 2 days later my check engine light came on. The codes are P2197 P2195...


The descriptions for your codes are:
P2197 - H02S (RF) signal stuck lean
P2195 - H02S (RF) signal stuck lean
P2187 - Fuel System too lean at idle
P0102 - MAF circuit low input

Essentially what's happening is that your MPV is running too lean when at idle. Too much air and not enough fuel. As you speed up - it forces more air into the system which alleviates the problem.

Examine your mass airflow sensor. It should be completely clean - no fuzzies on it at all. If so - purchase some mass airflow sensor cleaner to clean the sensor. ONLY USE THE PROPER CLEANER TO AVOID DAMAGING THE SENSOR. Disconnect the battery to reset the system and turn off check engine light.

Otherwise you will need a scan tool to look at the voltages being supplied to/from the PCM for each of the Heated Oxygen Sensors and the Mass Airflow Sensor to determine which part is creating the problem.

May 25, 2011 | 2005 Mazda MPV

1 Answer

Engine misfire first 1000 rpm, engine flooding out, check engine light is on but flashes when in motion, scanner shows system too lean bank 1 and 2. shows multiple cylinder fault codes.. (FORD F-150...


my 2002 ford f150 4.2 would not hold idle so we changed the fuel pump and fuel filter and relay now the truck starts holds idle runs good at low rpm but when i stomp it it runs then stalls and picks up again.

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