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rough idle, bogging down, surging, when cold (43F), OK the rest of the day 900

posted by  GAcyclops on  Tue Dec 11 09:15 CST 2018
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last visit: Sun Jun 29 13:55 CST 2014
[RELATED]

'93 945 NA

Lately on cold (40-45F) mornings, the car will crank OK, then begins to idle rough & smells "rich", surges & bogs down. When I drive, same thing, sometimes it will smooth out, then start bogging down. Then drive 10 minutes in traffic & thermostat opens.
After lunch, 50F air temperature or higher, the car idles & runs just fine for the rest of the day.

I recently replaced brake booster, booster vacuum hose, & fixed vac leak on MAP sensor.

Any ideas would be greatly appreciated.





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New rough idle, bogging down, surging, when cold (43F), OK the rest of the day [900]
posted by  GAcyclops  on Tue Dec 11 09:15 CST 2018 >


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