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Automotive Repair Car Troubleshooting Topics   Car Troubleshooting   Engine Troubleshooting   Engine Fault Codes   Electrical and Wiring   Transmission Problems Car Repair Topics   Car Making Noises   Car Stereo Repair   Heating or AC Issues   Motorcycles and ATVs   Tricks of the Trade   Truck Repair Advice Site Options:      Login   Sign up here! Latest Forum Post   mdma pills for sale : WhatsApp +33758633852 ketamine, 4-MMC, MDPV, methylone, amphet...   Buy Nembutal Oral Solution Pentobarbital.. WhatsApp +33758633852 order nembutal online in Germany (WhatsA...   Drive Shaft Repair I have a 2015 Chevy Traverse AWD. The fr...   2006 Toyoto Camry XLE Driver Side Electric Window Trouble Hello, Looking for a little brain help ...   Tierod end change caused some kind of leak Hello so I just took my car to the nearb...   2011 Dodge Nitro OBD scanner seems to drain battery in 10-20 minutes When I bought this car in summer 2023, a... Grounding Cable, 2017 Jeep Renegade Trailhawk The Cable that connects my negative batt... Rough Idle (Found new thing) Hi everyone. First of all sorry for bad ...     equipment hey yall. im a first year engineering st...   HELP I have a 1956 1/2 ton panel truck, 69 35...

Search Auto Parts Search '99 Mercury Cougar - Engine RPMs Increase on Own Sign up here!   Email This Post Auto Repair Home>> Automotive Repair>> Engine Troubleshooting chas80 New User Mar 1, 2008, 7:24 AM Post #1 of 5 (3024 views) '99 Mercury Cougar - Engine RPMs Increase on Own Sign In 1999 Mercury Cougar with 2.5l v-6 and manual trans, approx 125,000 miles. I have a problem with the engine increasing RPM when I disengage the clutch. As I accelerate from a stop and shift gears, each time I throw out the clutch the engine RPM climbs... starting from where it is when the clutch is thrown and usually to a high as 3800. I can sit there and watch the tach climb! The RPMs will hold there until I shift and re-engage the cutch, loading the engine. This problem also sometimes happens when I come to a stop and disengage the clutch, although if I keep the car in gear until almost stopped it will not occur (engine load seems to drag the RPMs down). There are no engine codes being logged. I checked the throttle cable and there is no hang-up (anyway, the RPM is climbing... not just holding). There is no problem at idle... car starts and idles fine at specified RPM. Any help is greatly appreciated.... I think the car is haunted. Thanks! Double J Veteran / Moderator Mar 1, 2008, 2:03 PM Post #2 of 5 (3010 views) Re: '99 Mercury Cougar - Engine RPMs Increase on Own Sign In I know there was a recall for the accelerator cable..inner core wire of cable frays and breaks over time causing the vehicle to go into a high idle... Just a thought.. dmac0923 Enthusiast Mar 6, 2008, 6:50 AM Post #3 of 5 (2994 views) Re: '99 Mercury Cougar - Engine RPMs Increase on Own Sign In like mentioned by JIM look at your accel cable and your "TPS" sensor on the throttle body __________________________________________________ 2015 Jeep Grand Cherokee 2002 Ford Ranger 2004 Toyota Corolla 1969 Ford Mustang Mach 1 helotech1 New User Mar 31, 2008, 10:05 AM Post #4 of 5 (2942 views) Re: '99 Mercury Cougar - Engine RPMs Increase on Own Sign In have same problem only when ambient temp is warm just wandering if you found anthing out Tom Greenleaf Ultimate Carjunky / Moderator Mar 31, 2008, 10:53 AM Post #5 of 5 (2940 views) Re: '99 Mercury Cougar - Engine RPMs Increase on Own Sign In I've seen idle speed motors stick but not out of control high as first mentioned! T   Email This Post   Automotive Repair     Auto Body Repair and Refinishing     Heating or AC Issues     Electrical and Wiring     Brake Systems     Car Stereo Repair Advice     General Discussions     Car Making Funny Noises     Engine Fault Codes     Engine Troubles     Exhaust Systems     Steering and Suspension     Transmission Troubles     Tricks of the Trade Automotive World     General Discussions     Antique Car Talk     Car Shows and Events     The Bargin Bin     Motor Vehicle Inspection     Car Care Tips     Traffic Tickets     Gasoline, Motor Oils, Concept Cars and Engines     Auto Insurance, Financing, Leases, Warranties Truck Repair     General Discussions     Truck Engine Repair     Truck Suspension Repair Motorcycle Repair     General Discussions     Motorcycle Engine Repair CarJunky     Open Posting     Board FAQ's     New Board Suggestions

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