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 > 1993 Itasca chev 454 will not start

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Sumter, SC

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Posted: 01/28/21 09:25am Link  |  Quote  |  Print  |  Notify Moderator

Haven't driven in a year but was starting up and running systems. Battery fully charged cranks but does not start. any idea where to start looking? Pretty sure it is fuel injection.

enblethen

Moses Lake, WA

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Posted: 01/28/21 09:49am Link  |  Quote  |  Print  |  Notify Moderator

I am guessing that the instrument lights come on.
Is the main battery disconnect on?


Bud
USAF Retired
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2003 Chev Ice Road Tracker


Matt_Colie

Southeast Michigan

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Posted: 01/28/21 10:03am Link  |  Quote  |  Print  |  Notify Moderator

Bob,

Before you get too wound up, have someone put an ear next to the open fuel fill when you turn the ignition on but do not crank.
He should be able to hear the fuel pump in the tank start.
If he can't, locate the fuel pump relay in the box that I believe is under the hood. Check the fuel pump relay in there.
Try to feel it work.
If the relay works, go under the coach and bank on the tank. Fuel pumps often get sticky from not running for a long time. It only takes a little to free them up.
Good Luck
Matt


Matt & Mary Colie
A sailor, his bride and their black dogs going to see some dry places that have Geocaches in a coach made the year we married.


enblethen

Moses Lake, WA

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Posted: 01/28/21 10:08am Link  |  Quote  |  Print  |  Notify Moderator

Here is how to read codes on your 1993.
GM early OBD code reader

enblethen

Moses Lake, WA

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Posted: 01/28/21 10:20am Link  |  Quote  |  Print  |  Notify Moderator

Fuel pump relay is under the dog house, left side of the engine compartment mounted to a brace.
It only operates for about 10 seconds to pressurize the injectors and fuel system.
One the engine starts and gets oil pressure, the power to the fuel pump goes through the oil pressure sending unit.

udidwht

Seattle

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Posted: 02/07/21 11:31pm Link  |  Quote  |  Print  |  Notify Moderator

Cranks but no start...

1. Check relay

2. Check ignition coil (Fuel, air, spark are needed for combustion)

3. ICM, Pick up coil (must remove distributor)

4. Check wiring (rodent damage)


1994 Fleetwood Southwind Storm
P-30 chassis 7.4L 454 TBI 58,301 miles and counting....(as of 06/08/19)
VIN# 1GBJP37N4R3314754

mfinnerty

Wentzville, Mo.

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Posted: 02/08/21 11:01am Link  |  Quote  |  Print  |  Notify Moderator

I recently had similar problem in a 2003 on a Workhorse chassis. My problem was caused by a critter chewing through one of the many wires going to the engine computer. Found it by sheer luck when I noticed a bunch of chewed up acorns on the front of the computer.


Mike & Linda Finnerty with Finn & Rosco (Golden mix brothers)


garry1p

Oklahoma

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Posted: 02/09/21 07:59pm Link  |  Quote  |  Print  |  Notify Moderator

Three things are required to start air,fuel and spark. Check air filter mice can build a nest in there next check for fuel then spark. This will tell you where to concentrate your troubleshooting effort.


Garry1p


1990 Holiday Rambler Aluma Lite XL
454 on P-30 Chassis
1999 Jeep Cherokee sport


Bo Walker

Crawfordville, Florida

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Posted: 02/15/21 02:17pm Link  |  Quote  |  Print  |  Notify Moderator

I had a 1993 Winnebago Brave a while back. I am pretty sure it had a carburetor and wasn't fuel injected. I once had a 1996 Winnebago Adventurer that was one of the first fuel injected systems used on the motor homes. I changed the fuel pump one time. Years later, I changed the fuel pump sensor three times trying to solve my problem. After a few frustrating years of cranking and not cranking, I discovered the wiring harness at the sensor was broken, but not visible. It would run until I turned it slightly, then start to shut off. As soon as I released the harness (plug) it would run again. My sensor was kinda hard to reach. I purchased a new wiring harness and changed it out and solved my problem.

enblethen

Moses Lake, WA

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Posted: 02/15/21 02:50pm Link  |  Quote  |  Print  |  Notify Moderator

My 1993 Chev chassis has throttle body injection.

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