I have a 95 Dodge Caravan. It cranks fine, it does not act like it is not getting gas, it actually runs pretty good until I hit about 51 to 52 miles per hour. When I get over 50 it starts jerking and sputtering, surging like it is not getting enough gas, or power or something like that. as soon as I lower the speed back to 50 it goes away and runs normal. It has me puzzled because other than this, it runs perfect. Please help.
You may need to perform a basic tune up such as; spark plugs, wires, fuel filter, and other items recommended by the manufacturer at your mileage interval.
〉 Answered on Nov 25th, 2009 by Amanda J. Pierce, MBA "AJ", Certified Mechanic, Project Coordinator; Primavera Scheduler at VIGOR Alaska Industrial Shipyard & BizzM3ch Solutions
While there are several possibilities Martha, the first thing that jumps into my head is ignition coil. They are a pretty common failure on these cars and should be easy for a technician to diagnose. An issue with fuel delivery is another potential problem. Could be as easy as a restricted fuel filter. Either way this should be a straight forward repair. Hope this helps!
〉 Answered on Nov 27th, 2009 by Judy Curry, Co-Founder and Vice President of Marketing at Currys Auto Service
Hello Martha- It may be that the speed sensor located on the trans axle- is sending a bad signal to the engine control computer when the vehicle reaches 50 mph or more causing the computer to malfunction - best to have a technician drive with you to see the problem.
hope this helps-
Super Girls Auto.
〉 Answered on Nov 25th, 2009 by Laurie Sarno, Co-Owner at Super Girls Auto