The non-Turbo Bosch Pulsair car speed seems to increase/decrease very slightly when driving steady. It is not noticeable unless you really look for the problem. The car has 65K miles on it and was in storage until a few months ago with stabilizer in the gas and was started and run several times a year. I don't think the problem is the fuel filter because I can run it at high speeds and it doesn't choke from lack of fuel. I have run two bottles of fuel injector cleaner through it to remove any gummy deposits. Other than this problem, it starts and runs fine. The problem exists with and without the cruise control.

Any ideas? Thanks.

1983 245, 1980 244, 1982 244, 1987 744, 1990 744, 2ea 1991 744(still running), 1995 944(still running).