99 Ford Crown Victoria, cold start issue, car starts, goes to high idle, then drops down and dies. At 19 degrees it did this at least four times before staying running, it then sounds like its getting way too much fuel. After its warmed up it sounds okay. Do the o2 sensors come into play during cold start? What else could be the problem?
Possible vacuum leak, do you have a CEL on?
Possibly the mass air flow sensor.
Thanks guys, I now have some codes from the car in question; 1. P0136- We replaced the bank 1 sensor 2, it helped slightly. Also the car has 155000+ miles 2. P1131 3. P1151 4. P0300
We cleaned the mass air flow sensor , the cold start problem was resolved, thanks for all the suggestions
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