B26Marauder
New Member
- Joined
- April 7, 2004
- Messages
- 7
- Reaction score
- 0
- City, State
- Lake Jackson, Texas
- Year, Model & Trim Level
- 2000 Explorer Eddie Bauer
I had to have the compressor replaced (with a new one, not rebuilt) 2 months ago. The AC has, and continues, to work fine. About 2 weeks ago I was stopped in traffic when the engine suddenly surged about another 300-500 rpm. The car just wanted to pull away from me. I had to press the brake harder to keep it from moving. Ever since that time, whenever the AC compressor engages, the rpm will shoot up the addtional 400 rpm or so. This is making it hard on the engine, brakes and transmission. Whenever the transmission is in the process of switching gears, the engine surges during that half second instead of dropping down in rpm. At speeds below 40, I have to brake to slow down, I just can't take my foot off the gas. This additional rpm acts like a cruise control. I can just take my foot off the gas and the car will continue at the same speed. If I'm doing 15-20 and take my foot off the gas, the car will actually slowly increase in speed and actually change gears and continue to increase if left unchecked. Is there a speed sensor of some kind that only comes into play when the additional load of the AC is placed on the engine? While the car is exhibiting this behavior, if I just reach over and turn off the AC, the engine immediately drops back that 400 rpm, and the rpm and transmission shifting return to normal.