Is there a problem with my 454 engine?

I have asked a number of people and have been told that it is a motor home issue caused by the dog house engine cover and that the 454 was redesigned around that time to increase engine heat to increase millage. My question remains, is it just my 454 or have other people had the same problem?

What to do if your RV has a 454 problem?

The plug wires burn out from the heat. I was told to get a good set and replace evvery 25000 miles. I figured may I would cut holes in side panels to let the heat out. In aviation we always figured the heat outlet should be twice the inlet size. Good luck. George ▶ Reply Thank you for the comments George.

How does the fuel pump work in a 454 engine?

It pumps fuel to the throttle body and the direct fuel injector system through the fuel supply line and then through an in-line fuel filter. The pump is designed to provide pressurized fuel at 125 kPa (18psi.) A pressure regulator in the TBI keeps fuel available to the injectors at a constant pressure between 62 and 90 kpa. (9 to 13psi.)

What do you put in the boot of a 454?

The splash shields on the right side of the motor have been removed I assume in an effort to let some of the engine heat escape. I have finally found a way to keep the heat from attacking the boot. I use the heavy duty boot, place it inside of the heat sock (used on race cars and such), and fill the heat sock with silicone designed for wood stoves.

Why does my 454 spark plug keep failing?

The previous owner told us that there was a small problem, it would “pop back through the carb” under load. I tried lots of things and finally found the culprit. Manifold heat was so hot it would cause failure of the number 7 spark plug boot.

How old is the ultrapower GM L29 454?

Its a brand new L29 454 from GM. Approx 32000km I installed 3 years ago. 196000km on rest of the truck. ( Joe Soares, 05/16/2021 ) We can accommodate your requests for the oxygen sensors, speedometer adjustment and increased HP/TQ.

What kind of engine does a 1989 Southwind have?

Posted August 28, 2011. Our 1989 Southwind (454 engine, 32′) made the trip from Denver to the Grand Canyon just fine last year and has been very reliable for the last 3 years we’ve owned it. We love the coach and don’t think we need to upgrade anytime soon.

What are torque specifications for GM 7.4L 454ci V8?

Crankshaft To Engine Block 128.8 Cylinder Head To Engine Block Distributor Clamp To Engine Block Drain Plug To Oil Pan Engine Temp Sensor To Engine Block Exhaust Manifold To Cylinder Head Flywheel To Crankshaft Intake Manifold To Cylinder Head Oil Pan To Engine Block Oil Pan To Engine Block

Where are the spark plugs on a GM 454?

It is not an HEI like its predecessors, it has the ignition coil mounted off to the left on the intake manifold (changed that with a spare coil I had) no change there. The plug wires are the MSD street Fire 8mm ones and the spark plugs seem to be firing.

Where is the advance spring on a GM 454?

There is a mechanical advance spring set up under the distributor cap. Also, unless the engine system has been updated; there is a vacuum advance unit attached to the metal base under the cap. The top item is to replace ALL the vacuum lines.

Why is my transmission stuck in limp-home mode?

Transmission is stuck in limp-home mode – Possible causes include low voltage or communication problems with transmission and engine control units.

What kind of engine is a 1988 Chevy 454?

Specifications for the 1988 454 RV Engine by Jeff Slater Manufactured by Chevrolet, the 454-cubic-inch big-block V-8 is a workhorse used in a multitude of applications. The reliability and high torque made it an ideal choice for everything from light duty trucks, to SUVs and motorhomes.

What kind of air cleaner does a 454 engine use?

I would also go to a Banks exhaust and KN air cleaner if I still had the coach. The 454 is a great engine. Our 1989 Southwind (454 engine, 32′) made the trip from Denver to the Grand Canyon just fine last year and has been very reliable for the last 3 years we’ve owned it.

Are there any problems with my 454 c.i.engine?

The only problem I’ve had with mine is a small power steering fluid leak, which I plan on fixing this winter. Actually, the formula for descending any grade is to downshift until you find a gear that will hold your speed in EQUILIBRIUM– you are neither accelerating nor decelerating WITHOUT USING YOUR SERVICE BRAKES (brake pedal).

Is the GM 454 a good gas engine?

The GM 454 (7.4) is a great engine. The basic engine is a real workhorse. The following is just my opinion. I feel that any coach up to 34′ is just about the max for a gas engine. 37′ might be a little too much for the 454.

When did Chevy start using the 454 engine?

The LE8 454 was the most common from 1973 to 1991. The L19 TBI, or throttle body injection, powered 1987 and later trucks as the second 454 engine option. The TBI 454 had fuel injectors in the middle of the throttle body that increased fuel efficiency, power and durability. Chevy began installing 454 V-8s in its trucks in 1973.

Is the Chevy 454 LE8 still in use?

The LE8 version still served GM trucks through 1991, although its horsepower rating varied from a low rating of 215 horsepower in 1974 up to about 230 in 1991. The standard transmission matching the LE8 454 on 1973 to 1987 trucks was the four-speed Muncie manual.

What’s the problem with my GM 454 engine?

I have a 1984 Itasca SunFlyer with the GM 454 engine that has heavy duty spark plug boots and wires. My problem with the hot engine has been vapor lock and hot starter problems. The vapor lock problem has taken a winter holiday.

Is the 454 engine a good RV engine?

The 454 is a great engine. Our 1989 Southwind (454 engine, 32′) made the trip from Denver to the Grand Canyon just fine last year and has been very reliable for the last 3 years we’ve owned it. We love the coach and don’t think we need to upgrade anytime soon.

Can a 454 take you on that trip?

Can a 454 take you on that trip– absolutely. The only HAVE TO other than routine maintenance is to change the BRAKE FLUID. Old/hydrated brake fluid boils at under 300 degrees F– new fluid around 500 degrees. Loosing your brakes in the mountains is not when to decide to change the brake fluid.

How can I tell if my idle control valve is working?

To check if an idle control valve is working properly, start by turning on your engine and letting it run for a minute or 2. Then, when it’s at an idling speed, take note of the RPMs in your car. Next, turn the engine off and disconnect the idle control motor under your hood.

What should I do if my idle control motor is disconnected?

The engine should still start and run without any issue despite the idle control motor being disconnected. Be sure to tuck the wiring you disconnected up in the engine bay so it doesn’t get caught in any moving parts. Look for a difference in idle speed.

How big is a 1994 Fleetwood Bounder motorhome?

1994 Bounder Prices, Values and Specs Select a 1994 Bounder Series A brand named from a suggestion of a journalist, Fleetwood Enterprises built the first Bounder motorhome in 1985. Between 20.5 and 40 feet in length, Bounder Class A motorhomes providing a choice of gasoline or diesel engines.

When did the first Bounder motorhome come out?

A brand named from a suggestion of a journalist, Fleetwood Enterprises built the first Bounder motorhome in 1985. Between 20.5 and 40 feet in length, Bounder Class A motorhomes providing a choice of gasoline or diesel engines.

What kind of equipment does a 1994 Bounder have?

MOTORHOMES – 1994 prices include (2)color TV’s, (2)air conditioners (1 air conditioning in model 28T), VCR, generator and wheel simulators. In addition to previous equipment, models 37X, 32HD and 32JD include levelers, power mirrors, and back up camera.

Is there a code plate for ignition timing 454?

Being a prof mechanic it is hard to believe the lack of intel on this rig!!! 94′ P30 454, books say to Identify timing setting by referring to code plate on firewall, well there is no plate, have looked everywhere.

What kind of fuel system did the 1980 Chevy 454 use?

A M4MC or EM4MC carburetor was used on most of the 1980 series engines. This is an aspirated fuel delivery system with the addition of a mixture control system controlled by the ECM.

What makes an internal combustion engine not start?

To operate efficiently, an internal combustion gasoline engine needs a good spark, the right amount of fuel, and good compression (a healthy mechanical condition). The lack of any of these three things will prevent your engine from starting.

What to look for when your engine won’t start?

Check for a blown fuse that may be preventing a circuit from working properly, like the fuel injection or computer system. To operate efficiently, an internal combustion gasoline engine needs a good spark, the right amount of fuel, and good compression (a healthy mechanical condition).

Is there a problem with my 454 engine?