Question about 1994 Mazda 626

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Car stalls while driving at high speeds

'94 Mazda 626, 4 cyl., Manual trans. Runs fine at low speeds or idle.
After driving for approx 30 - 40 miles when cold, it stalls. It will restart. Initially, it started as a miss, and has progressed to a stall. When I pop the clutch to restart, it backfires through the exaust. It has progressed to the point of not wanting to restart after stalling. I have it in the shop now, and the mech has it running. It is running fine, and hasn't stalled.
It seems to only stall at highway speeds.

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  • Mazda Master
  • 3,261 Answers

I would start by checking the spark plugs and leads. if that ok i would think there is a problem with the dispack that the spark plug leads fit to, if its cracked or any rust i would replace.

Posted on May 23, 2017

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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rockitman187
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SOURCE: 1995 mazda 626 stalling at low idle

Check the EGR valve



Please rate this a fixya

Posted on Feb 11, 2009

landsend
  • 1066 Answers

SOURCE: 1990 Mazda 626 4 cyl

low idle speed...or the need of a tune-up

Posted on Mar 26, 2009

  • 1 Answer

SOURCE: When put into drive the car shakes and stalls. It

I have a 1989 5-series BMW which sometimes stalls after changing from reverse to drive. It also sometimes shakes when first driving in reverse before changing to drive.

Posted on Aug 18, 2010

czaa
  • 4536 Answers

SOURCE: My mazda 626 94 5

probly needs tuneup-change plug wires and distributer cap------clean throttle body area or carb-----test fuel delivery function-pump etc------------get vehicle scanned

Posted on Jul 29, 2011

  • 3640 Answers

SOURCE: I have a 99 mazda 626 runs and starts fine but

check and or clean the (IAC) idle air control, this is what controls idling on most of todays cars and light trucks. if iac is removed for cleaning. clean out where it mounts to engine or fuel injection unit. good-day !

Posted on Jan 31, 2012

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Dirty air filter, dirty throttle body...try 2 bottles of gas line fuel injector cleaner...has your car been parked for awhile? Heet gas additive will work on any low gas tank sludge that you may have. Hope this helps.

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1999 mazda 626 lx engine stalls when put in any gear


It can be low fuel pressure issue or clogged fuel pump. Or its engine related issues,---------------
Check the help link mentioned below to troubleshoot the problem: ------

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------
These will help.
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This problem is commonly caused by a dirty automatic idle speed control valve and throttle valve. Buy a can of throttle valve cleaner (do not use carburetor spray cleaner!) from NAPA or Carquest (made by CRC chemicals) and spray it into the air intake while the engine is running, use up about 1/2 the can, engine will try to stall hold the speed up, shut it down and let it soak for 30 minutes, restart and blow out the remaining fluid, shut it down and disconnect the negative battery cable for 5 Min's to reset the base idle control

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My 1994 mazda 626 starts and ldles but stalls when driving


ENGINE STALL WHILE DRIVING COULD BE STOPPED UP FUEL FILTER OR FAULTY FUEL PUMP.IDLE SPEED TOO LOW.OR IGNITION COIL HAS A LOOSE ELECTRICAL CONNECTION.FAULTY IGNITION MODULE.BAD PLUGS AND WIRES. I WOULD DO A LITTLE TUNE UP.CHANGE FUEL FILTER AND AIR FILTER.IF SPARK PLUGS AND WIRES HAS OVER 30000 MILES ON THEM I WOULD CHANGE THEM.ALSO FUEL FILTER IF OVER 30000 MILES.CHANGE IT CLEAN FUEL INJECTORS. TO TROUBLE SHOOT CAR I WILL DO A LITTLE TUNE UP FIRST TO MAKE EVERYTHING TOP NOTCH ON THE ENGINE BEFORE I GO TO NEXT LEVEL.BUYING NEW PARTS DONT NEED.GET VECHICLE SCANNED WITH A SCANNER. THAT WILL ALSO PIN POINT PROBLEM QUICKLY.BUT DO THE LITTLE TUNE UP FIRST IF EVERYTHING PAST 30000 MILES MARK.SCAN VECHICLE FOR FAULTY IDLE SPEED CODES OR FAULTY IGNITION MODULE CODE THEY WILL COST MORE MONEY TO FIX.PARTS HIGH.

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1 Answer

Per diagnostic codes i have replaced CTS and MAF on 1993 Mazda 626 2.5 6cyl, now it stalls and quits at a stop, does this have to do with clearing the codes after the work is done, does the computer need...


u followed the pin point tests for these codes you had? did you disconnect the battery after you installed new parts? sounds like u have not fixed the problem, you do have a repair manual correct? did you check the intake air hose for cracks on the bottom which will cause a stall? did you clean the idle speed control valve and the throttle valve, they can also cause this stall, never adjust the the hard stop screw, it will chnage nothing and cause all kinds of other problems, it is not the problem, most likely the intake is sludged up clean it and then disconnect battery for 5 minuter, driv about 50 miles and problem should clear up, if it doesn't you have other issues, recheck for codes.

Oct 19, 2009 | 1993 Mazda 626

1 Answer

Revs drop coming to standstill


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May 12, 2009 | 1999 Mazda 626

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Apr 30, 2009 | 1995 Mazda 626

1 Answer

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Have a 96 camry 4 cyl auto. After highway driving, the idle becomes rough and wants to stall. The problem eventually goes away after driving a city speeds. Around town, it runs all day just fine. Help ,...


Here is the most common cause of surges and stalls and low idle, it is the idle speed control air-bypass valve and throttle valve, they get full of gunk over the miles and cause idle issues (stalls) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake.

Dec 05, 2008 | Toyota Camry Cars & Trucks

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