The celica cranked but cut off 2 times until I turned on the AC & the motor idled higher. Drove fine from there? Was test driving a 1999 Celica. Took three times to crank it and keep it started. The man I who owns it told me to turn the AC on. So I did and it cranked & stayed on and drove fine. I drove it about 6 miles. Parked it. Turned it off. Waited a few minutes. Cranked back with no problems. I opened the hood with the motor running and did not see any fluid leaks, etc.
What would make it do this?