I have a 1995 Volvo 960. About 6 weeks ago when we first start the car it would rev up high and then ease back down. Since then while we are driving it the RPMs will shoot up to about 3500 RPMs until I let my foot off the accelerator. We are necessarily driving at a high speed. Then it would do it again. We have replaced the transmission with a used one that had 38,000 miles. After the transmission was replaced there found corrosion on one of the connections. This caused a code of 313 to appear. The corrosion was cleaned from the connection and the codes have been cleared/reset. The only code that comes up is 111, which means there are no fault codes set. The transmission control module was swapped out for another one but the problem remained. It was suggested I replace the engine computer as well.
Could someone please give us some insight/help.
Thanks
Randal Freely
rfreely@yahoo.com
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