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Open Roads Forum  >  Class A Motorhomes  >  All  > 2006, Ford V-10, RPM Surge? Reply to Topic  |  Subscribe  |  Print Topic  |  Post New Topic  |  Oldest first Newest first  Page of 2   Next jolooote • View posts Miami, FL Senior Member Joined: 01/29/2002 View Profile Online Posted: 03/22/12 03:40pm Link  |  Quote  |  Print  |  Notify Moderator Hi all. I've a 2006 Class'A' on the Ford F-53 chassis. It has the 362 HP V-10 engine w/5 speed Tranny. I've noticed that the RPM's on the TACometer drifts UP & Down about 25 RPM at Idle centered about 600 RPM. If I increase the RPM, with gas pedal, to 1100 RPM it varies about 50 RPM. Is something going bad? I don't experience anything abnormal while driving. Joe&Charlotte, Nat'l SurfSide DE34D Ford 362HP 5speed Rusty, Rosie, Snuffy Dogs Leroy's a Conure If a 'Little' is good, 'Alot' ain't better. Golden_HVAC • View posts Fulltime, CA, USA Senior Member Joined: 08/19/2003 View Profile Offline Posted: 03/22/12 03:51pm Link  |  Quote  |  Print  |  Notify Moderator Hi, There is probably a stepper motor inside the tachometer, and it is trying to decide "Point to the 600 or point to the 625?" and keeps changing it's mind, while the actual engine rpm is somewhere between 595 and 618 RPM's. Basically the same thing happening at 1100 RPM. Nothing to really worry about. You did not mention the engine feeling like it is surging faster and slower. This might indicate a vacuum leak, or any number of other things. Air sensor not working right, or drastic change in altitude that the electronic controls have not gotten used to yet. Do you have any other engine codes? If running rough, it can be a failed coil or wire, but that is not indicated by anything you said today. Each of your cylinders has it's own coil and wire to the spark plug, no distributor anymore. Fred. GORVN4FUN • View posts Chicago Burbs,Illinois Senior Member Joined: 04/22/2003 View Profile Good Sam RV Club Member Offline Posted: 03/22/12 05:40pm Link  |  Quote  |  Print  |  Notify Moderator I have the same year same engine. My idle is smooth. Just checking, but is your air filter clean and all? Current - 06 Georgetown 326DSF XL - Class A w/ 07 Ford Edge toad 3rd - 02 Dutchmen Classic 28FB-DSL TT w/Silverado PU & Expedition SUV 2nd - 99 Wilderness Lite 22' TT w/Dakota PU 1st - 87 Palomino Slide-In TC w/Toyota PU koda55 • View posts Jacksonville Senior Member Joined: 07/28/2009 View Profile Good Sam RV Club Member Offline Posted: 03/23/12 03:16pm Link  |  Quote  |  Print  |  Notify Moderator Did you put a new filter in? I would check the filter housing and all the connections for your air supply. Mine did that when The tube from the top of the air filter came off. jolooote • View posts Miami, FL Senior Member Joined: 01/29/2002 View Profile Online Posted: 03/23/12 08:00pm Link  |  Quote  |  Print  |  Notify Moderator Filters are fairly new & still clean. Yes, I also hear the engine RPM vary slightly along with the TACH movement. I'm at sea level, idling at my home in Miami, Fl. so no altitude situations. Have no 'Codes'. Otherwise, the engine runs fine. ??? jolooote • View posts Miami, FL Senior Member Joined: 01/29/2002 View Profile Online Posted: 03/24/12 09:36pm Link  |  Quote  |  Print  |  Notify Moderator Any more ideas? Thanks newxmar • View posts East Otis, MA Senior Member Joined: 02/04/2004 View Profile Good Sam RV Club Member Offline Posted: 03/25/12 06:53am Link  |  Quote  |  Print  |  Notify Moderator In our 1999 V-10 the exhaust gas circulator valve malfunctioned under warranty. The design was at fault and Ford improved it. Codes should tell why it is surging. jolooote • View posts Miami, FL Senior Member Joined: 01/29/2002 View Profile Online Posted: 03/25/12 08:46pm Link  |  Quote  |  Print  |  Notify Moderator Again...No Codes showing. Pirate • View posts Appalachia Senior Member Joined: 05/20/2002 View Profile Good Sam RV Club Member Offline Posted: 03/26/12 04:49pm Link  |  Quote  |  Print  |  Notify Moderator Buy a scangauge II and comnpare the RPM's to your dash gauge. jolooote • View posts Miami, FL Senior Member Joined: 01/29/2002 View Profile Online Posted: 03/26/12 08:03pm Link  |  Quote  |  Print  |  Notify Moderator Again...I see the RPM varying on the TACH & HEAR the engine changing along with it. The variation rate is about 3 seconds per cycle. Reply to Topic  |  Subscribe  |  Print Topic  |  Post New Topic  |  Oldest first Newest first  Page of 2   Next Open Roads Forum  >  Class A Motorhomes  >  All  > 2006, Ford V-10, RPM Surge?

Search:   Advanced Search Search only in Class A Motorhomes

Jump to Forum Dear Marcus  - Good Sam Roadside Assistance  - Good Sam Club  - Good Sam Insurance  - Camping World Accessories  - Camping World RV Sales  - Good Sam Extended Service Plan  - Camping World Service and Inst... Recreational Vehicles  - Class A Motorhomes  - Class B - Camping Van Conversi...  - Class C Motorhomes  - Fifth-Wheels  - Folding Trailers  - Hybrid Travel Trailers  - Travel Trailers  - Truck Campers  - Toy Haulers Camping  - Tent Camping  - Family Camping  - Workamping Forum General Forums  - Beginning RVing  - Rallies, Shows and Gatherings  - General RVing Issues  - RV Lifestyle  - Full-time RVing  - Camp Cooks and Connoisseurs  - RVing with Disabilities and Ge...  - RV Pet Stop Technical Resources  - Do It Yourself Modifications a...  - Towing  - Tow Vehicles  - Dinghy Towing  - Technology Corner  - Forum Technical Support  - Tech Issues Locations  - RV Parks, National Parks, Stat...  - Roads and Routes  - Public Lands, Boondocking and ...  - RVing in Canada and Alaska  - RVing in Mexico and South Amer...  - Snowbirds Other Discussions  - Around the Campfire

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