I can't find a obd 1 scanner for this car. I can't afford 1200. dollars for a professional model and another 700 for the asian adapter set. Will a ford probe scanner work if i change connectors do the use the same software. Thanks in advance for any help you can provide.
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Check the plugs for wear and replace as necessary. When you apply anything electrical, it naturally puts a greater load on the alternator and will require more power from the engine. 700-800 RPMs is about right but double check those plugs. Use NGK or Nippon Denso only. Let me know if you need anything else.
I have a 1995 Mazada 626 V6 and i had a simular problem. My mechanic couldn't figure it out. My boyfriend did the usual checks also, but 1 thing extra he raised the idle to 1100-1200 rpm's from the 750-1000 it was at...well since then no problem.
My '91 626 did the same thing. I tested the throttle position sensor, and it was good so that wasn't it. The other likely culprit is the Idle Speed Control valve, or Idle Air Control valve, which is a $500 part new (more than I paid for the whole car). I pulled one off a 626 at the salvage yard and got it for 3 bucks, put it on (it's an easy DIY, just 4 philips screws holding it to the intake manifold), however I can't be sure that solved the problem, since I haven't run the car much since then. It would seem the most likely cause, tho, and a cheap fix if you go used. Other possibilities: O2 sensor or Mass Air Flow sensor?