I have a 1995 E-350 Club Wagon 5.8L engine that is used as a church van. It had been having problems with variable idle speed from high idle speed 2800-3000 to slow idle and stall intermittantly since the summer. Now it will not start unless you prime the intake with a tablespoonful of gas then it will start and stay running at high idle 2800-3000 rpm. I took to a local mechanic in August and they replaced the Idle air solenoid but that did not change anything. I was thinking it might be the throttle position sensor that was causing the high idle, but that should not cause the no start should it? I have a cheap Actron CP9150 diagnostic tool. While I was checking the engine controller data it reported a change of mode from CT to PT while the idle speed varied. The Actron instructions do not mention what these abbreviations mean. I asked the Actron technical hotline if that was a change from Closed throttle to Part throttle and they said they did not know but that was probably it. Any ideas where I should look?
have the same problem?
Sunday, November 21st, 2010 AT 4:07 AM