Mazda 323,Mazda 626 & Mazda 929 Whether the compact 323, the mid sized 626, or the full sized 929, these vehicles remain very popular even though production has stopped.

Mazda 626 misfires/stalls and sputters in rainy weather

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Old 06-21-2019, 05:05 PM
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Join Date: May 2019
Location: Iowa
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Default Mazda 626 misfires/stalls and sputters in rainy weather

I have a 1993 Mazda 626 5. Speed manual trans OBD 1, 230,XXX miles 4cyl . I've been having an intermittent yet consistent issue with my mazda for the last couple months. So as a last resort ive decided to create a thread in hopes that someone may have a solution to my problem. The car runs pretty good in dry weather other than an occasional high idle or idle surge but from what I hear that's a pretty common problem with mazda 626s of my generation and the Ford Probes however this does not seem to make the car stall or sputter just idle rough or idle surge. The issue I'm trying to fix is the sputtering and missfire/ and stalling in rainy weather. Note: this issue only occurs in humid and wet conditions. Sometimes after the car warms up to operating temperature it will come out of it, sometimes it doesn't. Ive replace plugs, wires, and the distributor. I have a stock air filter thats has also been replaced. I've tried both w-d 40 and di electric grease on the plug boots but doesn't seem to have any positive effects. Once the weather clears up and the car dries out a bit it seems to run fine again. Are there any electrical competents that could be getting wet and causing this problem? What types of things should I be checking/ replacing. Any info helps at this point I am at wits end with this one.



 
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