Dirtmover Posted June 30, 2019 Share Posted June 30, 2019 I looking for help to fix my 1995 CL700. It has an E -7 454 engine. My engine has erratic RPMs. Even if the truck is just idling it will rev up very high by its self. I have change the throttle pedal with no effect. The truck will even rev-up in any gear or at any driving speed. Not sure what I can check next. Any help would be greatly appreciated. ??????? Quote Link to comment https://www.bigmacktrucks.com/topic/57899-1995-mack-cl700/ Share on other sites More sharing options...
Rob Posted June 30, 2019 Share Posted June 30, 2019 It may sound out of kilter but change the air filter element(s), and tighten all the clamps on the induction system replacing any compromised or worn rubber parts; especially the ones leading to the turbocharger inlet. Also need to pressure check the charge air cooler and have it cleaned if dirty internally. Some may ask why to these suggestions but there is a method to the madness and I like the bases covered. Quote Plodding along with no job nor practical application for my existence, but still trying to fix what's broke. Link to comment https://www.bigmacktrucks.com/topic/57899-1995-mack-cl700/#findComment-426440 Share on other sites More sharing options...
Mack Technician Posted June 30, 2019 Share Posted June 30, 2019 Does it tend to want to hang around 900 RPM? Quote Link to comment https://www.bigmacktrucks.com/topic/57899-1995-mack-cl700/#findComment-426464 Share on other sites More sharing options...
Dirtymilkman Posted June 30, 2019 Share Posted June 30, 2019 Bad econovance Quote Link to comment https://www.bigmacktrucks.com/topic/57899-1995-mack-cl700/#findComment-426465 Share on other sites More sharing options...
Dirtmover Posted June 30, 2019 Author Share Posted June 30, 2019 Quote 12 hours ago, Mack Technician said: Does it tend to want to hang around 900 RPM? yes it seems to idle high. Quote Link to comment https://www.bigmacktrucks.com/topic/57899-1995-mack-cl700/#findComment-426527 Share on other sites More sharing options...
Mack Technician Posted July 1, 2019 Share Posted July 1, 2019 You have active codes? Amber warning light on? Quote Link to comment https://www.bigmacktrucks.com/topic/57899-1995-mack-cl700/#findComment-426549 Share on other sites More sharing options...
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