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Fluctuating RPM / Speed when driving 850

posted by  jeff w on  Mon Jun 24 17:28 CST 2002
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last visit: Tue Jul 24 17:32 CST 2001
[RELATED]

I am having an ever increasing problem with my car these days. I was pulling a 435 then a 436 A2 socket code in the past couple of months. I have since reset it and as of today took out both O2 sensors and did the torch/brake cleaner cleaning method. I did notice a difference after doing this to my car (accelleraion is back...and how) but the dipping on the tach and odometer is still there.
Basically i am feeling the engine speed and RPM dip about every 6-8 seconds (like the car is hunting for the correct speed.). The dip is pretty minor (can only see it on the tach when i am under 80 Km/hr but feel it always) but i can feel it on and off constantly. I have further checked the vac elbows tonight and can't seem to find any that are collaposed or soft. Any ideas would be appreciated.
Thanks
Jeff W
1994 855 T5 (fluctuating rpm/speed)
1994 854 T5
PS: Currently i do not have any check engine lights on.





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