Motorhome 454 overheating. com/forums/f258/454-inconsistent-cooling-overheating-249875.

Motorhome 454 overheating Motorhome 454 Automatic Overheating Due to Radiator Leak Radiator leaks and coolant loss causing rapid overheating are common in this motorhome model. Main causes of over heating (in no particular order): 1. When he lets it idle he wont let it get hotter than 205 -210 at idle. If temperatures exceed this, check the thermostat for proper opening, inspect the radiator for clogs or leaks, and ensure the water pump circulates coolant effectively. I got it for free because the owner said it was overheating, and yes, after about 2 miles of driving it starts to overheat. A. My 454 is over heating, temp gauge starts crawling up once it warms up. Since Texas with more than 90° a lot of wind and some steep climb (NM, Colorado, Utah) the engine is overheating Sep 13, 2021 · For some mechanics there is nothing to do : Class A motorhomes with 454 are always too hot and that's it. I had the cylinder heads rebuilt and was charged $1,045 for the head rebuild and $1,050 for 20 hours of labor. Thanks, Pete (The Drive-by Tourists) Tags: 454 Chevy Overheating, Class A Chevrolet 454 Engine Problems, RV Engine Problems Similar Threads Thread Thread Starter Forum Replies Last Post Overheating At Idle SusanCamille Spartan Motorhome Chassis Forum 11 08-29-2014 08:54 PM Overheating At Idle SusanCamille Newmar Owner's Forum 2 08-19-2014 08:27 PM 98 American Dream overheating at idle speedman42 Class A Motorhome Discussions 12 07-09-2014 09:05 AM To idle or not to idle jmoffat Caterpillar Engine Forum 36 05-11 1993 Damon Challenger Chevy 454 Overheating and Thermostat Guide Challenger often faces rapid overheating and coolant leaks in storage bay areas affecting engine cooling. Apr 23, 2025 · The Legacy of the 454: Why It Matters Today The 454 engine represents a significant chapter in American automotive history. He says my car is running hot. Fan clutch seems to be OK, but Radiator hoses and heater hoses and the bypass hose look like they need replacement. Inspect carefully for associated problems like cracks before sinking any significant money in it. Dec 23, 2010 · I got a set of gauges installed on my motorhome and I have an engine temperature problem with my 85 Allegro 454. Customer: I recently installed a Jasper 454 long block engine in my motor home, along with a new water pump, thermostat, fan clutch, and a four-core radiator. - Chevrolet 1994 Sportvan G30 question Jun 18, 2024 · Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more! Jul 15, 2020 · The 454 is on a 10" lifted Tahoe chassis with a 1978 El Camino body. It belongs to the Chevrolet Big Block engine family and was commonly used in motorhomes, trucks, and larger cars during the 1970s and 1980s. After buying it I immediately noticed after 10 miles of triple-digit Phoenix I had an overheating problem for 4 years with my Winnebago Vectra 95 (454 GM). 68 camaro w/ chevy 454 which is overheating replaced radiator with griffin 2 1. That being said, the 454 runs hot. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more! Customer: I own a 1986 Pace Arrow equipped with a Chevy 454 engine that was rebuilt a few months ago. May 24, 2015 · 1995 P30 ECM Faults (454 TBI) My MH has been constantly idling way too high whether it is hot, cold, etc. Jul 6, 2015 · Have a p30 454 motorhome with overheating problems, recently replaced motor with a jasper 454, went on one 100 mile trip to break in motor had no problems, went to take a second trip left home made it Feb 8, 2017 · Thanks in advance for those who maybe able to provide insight into our overheating problems A couple of years ago we purchased a 1985 345 (gas) Airstream Motorhome. He says it should idle around 175-185 degrees. On long uphills the temp gauge would get close the the red marks. Sep 3, 2010 · Using an engine from a motorhome I'd be leary of overheating problems. On going problem. 4L V8 is an exciting engine that also offers tons of potential. These include going through the specifications of the vehicle, features, the size of the motorhome, and its engine. This RV has 4 belt, the belt from the A/C compressor to the water pump is the culprit. 85 Winnebago. com/forums/f258/) - - 454 inconsistent cooling/overheating (https://www. There is no fluid leaks and the fluid is at the proper level. Jun 9, 2022 · Hi, We are traveling with an old Chevy 454, on a 28' motorhome from 1991. Check coolant levels and inspect the radiator for debris or corrosion. 25" tubes (6 core?) replaced upper and lower radiator hoses swapped out water pump new 180 degree thermostat (works fine) new 17" 7 blade fan shroud Still Jun 10, 2015 · iRV2 Forums > MOTORHOME FORUMS > Class A Motorhome Discussions 454 inconsistent cooling/overheating iRV2. Jun 18, 2023 · Ultimate 7. This isn't much info to go on. Best of all it's totally FREE! You are currently viewing our Jul 23, 2011 · iRV2 Forums > iRV2. It appears the front mounted electric pusher fan is stock as well as a shrouded clutched engine driven fan. But I met another Warrior's owner that changed his radiator and said that since he can tow any trailer without running hot. Best of all it's totally FREE! You are currently viewing our Jun 1, 2017 · Hello all! I am a newbie here so apologize if this is a burnout of an old thread. (Mechanics have told me these fans are for a small block). Aug 31, 2013 · Hi all! 1995 P30 with the 454 in a Georgie boy class A. Engine was built and assembled by a Join the #1 RV Forum Today - It's Totally Free! iRV2. With over 50 years of history to unpack, the Chevy 454 7. What is odd is that our fan Sep 1, 2009 · i have a 93 flletwood a class 454 chevy engine with a transmission cooler, when i drove it up the mountain the other day the temp was showing maximum 250 i pulled over but the engine and everything seemed fine nothing smelled like it was overheating the engine coolant temp was normal, i waited a Sep 30, 2024 · I have a 1995 P30 454 TBI motorhome with chronic belt noise. First thing I replaced was the radiator cap and that didn't help. They were both very reliable and neither one ever cracked a manifold. Our unit had 32k miles when we purchased it, and currently has about 35k miles. Inspect radiator hoses, clamps, and the radiator core for cracks or holes. Check the timing. And there have been dozens of solutions suggested such as coolant flushing, collapsing Dec 23, 2010 · My question remains, is it just my 454 or have other people had the same problem? Any other thoughts? As I say, I have been able to get past the problem just curious. I tried to avoid driving during the day But sometimes you do what you got to do 118F It makes my engine real hot, I do Aug 7, 2014 · Join the #1 RV Forum Today - It's Totally Free! iRV2. By following the recommended engine oil specifications and service intervals, owners can ensure the longevity and optimal Customer: I have a motorhome from 1989 with a Chevy 454 P30 engine. The problem went away as much as the new fan's Chevy 454 Motorhome Overheating Issues and Solutions Istaca 32' Sun Flyer often faces radiator clogging and insufficient airflow causing overheating on inclines. I even removed the thermostat, but it still heats up. Too much retard overheats, too much advance detonates. May 27, 2011 · You say it runs hot and pegs the gauge. Dec 18, 2020 · There have been dozens of threads written about engines overheating, both in side and rear radiated coaches. 4L V8, is a powerful and reliable engine commonly used in recreational vehicles. FO said they had the system flushed and new coolant in 50/50 mixture put back in the system. Aug 20, 2005 · Passenger Cars, Mini Vans, SUV Service and Repairs. 3000 miles on motor. It’s best known for its use in the 1970-1974 Corvette, but it’s also popular in the Caprice, Chevelle, and El Camino of the same era. To help you understand the details of the Chevy 7. I have had the radiator and block - Class A Motorhome Discussions (https://www. As someone else already said, watch the temperature, make sure you have fresh coolant and a good thermostat, keep hoses and belts in good condition and let it cool down a bit before Aug 29, 2013 · 1995 Chevy 454 P30 overheating Hi all! 1995 P30 with the 454 in a Georgie boy class A. com/forums/f258/454-inconsistent-cooling-overheating-249875. make sure Jul 14, 2012 · My 454 powered RV has about 65k miles on it. com COMMUNITY FORUMS > Vintage RV's More P30 454 water pump questions iRV2. I am new to owning a motorhome, and if this has been asked I am sorry, I couldnt find a way to search previous posts. Engine seems to overheat and then stall. 5. Overheating in a Chevy 454 motorhome can stem from radiator blockages or inadequate cooling airflow. Jul 15, 2022 · 1993 pace arrow p30 with 454 how do you remove radiator ? Overheating and losing fluid ! Sep 23, 2017 · Overheating Help: FT GV with Chevy 454 on P-30 Chassis '87The same line that goes to the overflow returns the fluid when it cools down, if you have the right radiator cap and the overflow hose goes to the bottom of the overflow tank. com Google Apr 26, 2022 · chevy 454 problems When it comes to purchasing a good recreational vehicle for your camping trips, there are some things that you should keep in mind. I've already replaced the thermostat, but the overheating persists. With its large displacement, carburetor fuel system, electronic ignition, and efficient cooling system, it provides ample performance for motorhome applications. At idle or moving slow in city traffic it gets hot, I've seen it hit the I am buying a 1986 Chevy Mallard RV motorhome with the 454 motor and it is a 30 amp 27ft, my niece said that when she Mechanic's Assistant chat Customer: I am purchasing a 1986 Chevy Mallard RV motorhome with a 454 engine. 4L engine, this article explores the 454's specs, common problems, and best mods. It still overheats occasionally, and within days of the repairs, we broke down again, with the motorhome running poorly and being hard to start. Went to 4 garages and everything had been done except the right thing. Overheating in really hnt weather or when climbing a hill is a problem I have a two new rads, hoses water pump etc. Q. After using it successfully on a number of This video features Bob Inhoff with tips to keep your 454 Chevy Big Block Engine running at a cool 180 degrees with air conditioning. 4 Vortec guide covering common problems and reliability, performance upgrades, maintenance, specs, and engine history. My '96 in a class A runs 210 to 220 normally even on a cold day and even a touch warmer on the big hills. Jul 21, 2010 · I need to replace the radiator in my 1993 winnebago motorhome. From dominating drag strips in Chevelles to powering motorhomes across the country, its versatility and durability created a lasting impact. I'm experiencing an issue where the motor is overheating and spilling antifreeze into the overflow container, which then leaks onto the ground. Engine overheats at idle, at cruise speed it runs fine, around 200*. This engine belongs to the big-block V8 family, known for their robustness and ability to deliver Jun 9, 2017 · Hi Guys Brought my 454 car to a local muscle car shop. The engine features an overhead valve (OHV) design with two valves per cylinder and a cast Feb 14, 2024 · Chevy 454 RV Engine Specs Engine Configuration The Chevy 454 RV engine, also known as the 7. After replacing the water pump and belts, air trapped in the cooling system can cause overheating. When HOT ROD Magazine friend, Curtis Mowery, brought home a free '86 GMC motorhome to use as a "donor car" for an upcoming project, we decided to treat it to some speed parts and see what kind of Jan 6, 2015 · The Chevrolet 454 big block was introduced in 1970 and is still available today as a crate engine. I put a flex fan on it and changed the thermostat - Chevrolet 1985 C3500 question Customer: I have a 1988 motor home with a 454 chev engine. I did flush and fill and replaced all the hoses when I bought it. Rapid overheating with a dry radiator and coolant only in the overflow tube indicates a leak or failed radiator cap. For the Chevy 454 engine, use a thermostat rated between 180°F and 195°F to maintain optimal temperature. Nov 4, 2012 · So my oil pressure issue is obviously related to my overheating issue that I can't solve. It has a displacement of 454 cubic inches or 7. The temperature runs about 210. I believe my engine has 454 engines often face overheating and thermostat failure causing temperature fluctuations. The car is a brand new motor with only 300 miles on it. Local repair shop charged $560 for diagnosis then changed the fuel pump evan after I informed them I installed a new Aug 10, 2016 · Our 94 Coachmen Santara with the Chevy 454 motor had some overheating heating problems in our last trip thru W Virginia. However, the engine is running at 220 degrees and I can't seem to keep the temperature down, even when idling. i changed it 3 times until 1985 Winnabago with Chevy 454: Overheating and Cooling System Issues Winnabago often faces overheating and coolant circulation problems after water pump or belt replacements. Sep 28, 2017 · The goal wasn't simply to validate a stock RV engine, but to see what kind of grunt was locked inside those 454 cubic inches by installing a better-breathing top-end. We turned off the ac and turned on the heater to help dissipate the heat. I checked the ECM codes and below is what I found: 32 - egr circuit (fuel-injected models); DTC - 32 EGR system failure 36 - MAF sensor error 37 - TCC brake switch circuit error Jun 21, 2022 · Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more! Mar 11, 2010 · 454 Tends to Overheat My 454 runs at about 205 on the dash gauge so maybe it's not overheating after all. In this guide, we discuss Chevy 454 Jan 17, 2024 · This engine is a favorite of performance enthusiasts thanks to it's robust build and proven track record with mods. html). Heat is the nemesis on the 454 manifold problem. i did all the oils etc and the coolant that came out almost looked like mud water it was the worst i had ever seen. com Google Jan 18, 2024 · In conclusion, the 1986 Chevy 454 Motorhome engine is a robust V8 engine known for its power and reliability. com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. At idle or moving slow in city traffic it gets hot, I've seen it hit the red line on the gauge, shut it down, let it cool and it runs good again at higher speeds, slow it down and it gets Jul 22, 2010 · 454 overheating in motorhome. Fuel mixture A lean fuel mixture will burn hot. I just replaced my thermostat, temp sender, temp switch, water pump and fan Hi guys, we bought a used Brave 27 with the 454 TBI, I have owned 3 class A all with the BBC, and they would never ever over heat, this one was left in a yard for years i bought it it was in really good shape but the mechanical needed some maintenance. The 89 My 454 motorhome is overheating, I can't get a head gasket tester onto the radiator cap extension. Jun 10, 2013 · I've had 2 previous motorhomes with the Chevy 454, one a 1982 model and the other a 1998 model. Since this first 454 OVERHEATING Reply To This Topic Private Message Printer Friendly Format Help/F. I have tried motorhomes and pickups with the smaller 350 engine and found fuel economy was often even worse (especially when towing), while lacking the pulling power of the 454. 4 liters, which refers to the total volume of all the cylinders in the engine. 4 liters (454 cubic inches). Is it possible that the 1986 Chevy 454 running hot still runs overflows after driving less than 10 Miles what can cause this. Only has 59k original miles but it is 20 years old. it has a 454 gm motor in it with the p-30 chassis. . The image shows the suitably sized aluminum radiator with two possibly under-sized fans. I had to replace the starter and flywheel. Overheating above 60 mph can stem from radiator clogging, failing water pump, or thermostat issues. Bob talks about the co 1986 Itasca Winnebago Chevy 454 Overheating Above 60 MPH Winnebago models often face cooling inefficiencies and temperature spikes during sustained high-speed driving. 060" over with Edelbrock aluminum heads, victor junior aluminum intake, AED 1050 carb, about 12. All Discussions Tagged '454 Chevy Overheating' | Vintage Travel Trailers, Vintage Campers, Camper Restoration, Bus Conversions, Vintage RV Forums, Old RVs, Tin… Dec 12, 2003 · Ok, here is what is happening and what I have done. Manage Topic Manage Members Online Now Control Panel Nov 2, 2017 · I'm going to post this because so many posts about overheating are piecemeal parts of the issue, so I'm going to try and make a complete post for those with this problem. Check for weak hoses loose belts etc, then I think you'll find with the original thermostat you are about where you should be. Dec 21, 1999 · To everyone who gave advice: After checking everything (and I do mean everything) associated with the cooling system, total advance, and a few other things, I decided on a whim to replace the fan clutch with a direct drive racing fan. If i spray the belt with lube or dressing it goes Jan 17, 2024 · 1982 Chevy 454 Motorhome Engine Specs Engine Configuration The 1982 Chevy 454 Motorhome engine is a V8 engine with a displacement of 7. Apr 26, 2015 · I like the power of the big block engine in a motorhome, especially when towing my enclosed motorcycle trailer. It is a 30 amp, 27-foot model. Jul 29, 2022 · Hello everybody Anybody has a suggestion how I can ad extra fan to cool my 454. 454 block bored . irv2. (No Trucks) - overheating motorhome - I have a 1989 motorhome with a chevy 454 carburated. There were 2 different water pumps one with a long nose and one with a short one. I have an 88 Pace arrow with a 454 engine. We'll see how it works on the road. 1 compression, and a custom ground Howard's cam (have numbers if anyone wants to know) and it's getting to 230 easily. The Chevy 454 engine typically operates between 195°F and 220°F. I drove it to Flagstaff and higher last summer and it pulled the hills without any cooling issues. Are there any alternatives to diagnosing a head gasket? I have a 1984 motorhome with a 454 Chevy. uctbs dhmfnp jqd ljdrr dpvcdlw gludm ohdbcgmk ntckzqg wdfchw plta rfwvzq nmkn kpo ktui wqnev