RV.Net Open Roads Forum: Location of Fuel Pump Relay - '94 Winnebago - WHERE??

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Open Roads Forum  >  Class A Motorhomes  >  Maintenance Issues & Tips

 > Location of Fuel Pump Relay - '94 Winnebago - WHERE??

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Leahbyers78

Kansas City, Missouri

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Posted: 09/21/13 07:27am Link  |  Quote  |  Print  |  Notify Moderator

1994 Winnebago Adventurer - Chevy Chassis

Engine starting but not turning over, did starter fluid test and it turned over.

Fuel pump installed and verified that it works by power hook up

ECM replaced and during power testing some wires show live

Replaced fuel pump filter

Replace "Starter Relay" thinking it was fuel pump relay - "plug in" like switch (black and oval like shape)

Still not getting power to fuel pump. In my research on the internet most say FUEL PUMP RELAY, but everyone has different locations. I tried to pull the diagrams off of Winnebago site and they mention FUEL PUMP RELAY but they never show where it is. Manual does not give location.

What does it look like?? Any help or suggestions would be greatly appreciated!! THANK YOU!!!

1995brave

San Antonio, TX

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Posted: 09/21/13 08:13am Link  |  Quote  |  Print  |  Notify Moderator

The relay should be on the drivers side firewall, close to the engine and ECM. Also check the oil pressure switch (located front drivers side of engine block). It will cause the engine to crank and try to fire. It closes when the oil pressure reaches 30 psi and will remain closed, as long as there is oil pressure, and supplies the power for the fuel pump. The fuel pump relay only supplies power to the fuel pump for a second when you turn the ignition swith to the on/start position.

Leahbyers78

Kansas City, Missouri

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Posted: 09/21/13 08:41am Link  |  Quote  |  Print  |  Notify Moderator

Thank you! I think that is what I have replaced.

1995brave

San Antonio, TX

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Posted: 09/21/13 08:58am Link  |  Quote  |  Print  |  Notify Moderator

Find yourself the Chilton manual #28642. It is for General Motors full-size vans from 1987 to 1997 and includes Motor Home Chassis.

MotorPro

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Posted: 09/22/13 06:50am Link  |  Quote  |  Print  |  Notify Moderator

First suggestion,stop throwing parts at it,second if I understand you corrctly it fires on starting fluid that means you are not getting fuel so the next step is to see if the pump is running. If you get under neith and have someone turn on the key can you hear it? If not get a meter and check for power to the pump.If pump is running then get a noid light and check for power to the injectors.

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Open Roads Forum  >  Class A Motorhomes  >  Maintenance Issues & Tips

 > Location of Fuel Pump Relay - '94 Winnebago - WHERE??
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