The SAM system has four urgency levels, A through D where A is something like "get to the shop now, don't collect $200" and D is something like "oh, btw".
The P0172, P0175 and the P0420 are C, and I quote, "Service Soon". The P0700 is B, "Important, Service As Soon As Possible".
The exact Possible Causes are:
P0172 - "Engine Oil Contamination"
P0175 - "Engine oil contamination"
"EVAP canister purge value leak"
P0420 - "Cylinder misfiring"
"Damaged catalytic converter"
P0700 - "Defective powertrain control module (PCM)"
"Defective Transmission control module (TCM)"
Now, it doesn't specifically say "These are 'or' possibilities when two or more are listed." But I make this assumption by the way it is listed. In other words, it appears they are "or" and not "and" (e.G, the PCM and TCM are fired."
This SAM systems seems pretty good, as it is a detailed paragraph on what the code means. It specifically says "System Too Rich (Bank 1)" for P0172 and Bank 2 for P0175.
I have ruled out the oil issue for two reasons. First, the oil has been changed every 3,000 miles since it was an infant (my best friend owned it before me so I know its history). Second, the last oil change was less than 500 miles ago, and third, the oil on the dip stick is clean and feels "like good oil should" (if feeling the oil is any valid indicator).
I tried your recommended test (turn key on for 7 seconds without cranking, turn it off for 7 seconds - did this 5 times) and it was still a hard start. When I turn it over for 3 to 5 seconds (even after the test), then turn it off and try again, it seems to start very quickly (like my 97 does).
Saturday, July 7th, 2007 AT 9:51 AM