| Fitech Fail [message #357092] |
Wed, 22 July 2020 19:54  |
traveler1980
Messages: 24
Registered: September 2019
Location: Gettysburg, PA
Karma:
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Junior Member |
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Ok GMC brain trust. I need your opinion on an issue I’m facing with Fitech EFI. One of my worst nightmares came true earlier this week when my coach broke down in heavy traffic. The highway patrol had to tow me off the road while escorted by state police. It made an existing backup even worse. I ended up getting a Landoll tow (thank you AAA) to Ken Frey’s shop up in Quakertown.
My coach has a very custom EFI setup. There are two low pressure electric pumps and a relay under the coach (inaccessible without a jack) near the tanks and a Fuel Command Center up front that delivers fuel at high pressure to the throttle body. I think this Command Center component failed because the low pressure gauge on the FCC has a reading with the ignition turned on, but the high pressure gauge reads 0 when in the on position and when cranking the engine. I have 12v to the command center (Jim Bounds walked me thru some triage), but it looks like the pump inside the Command Center may have died.
So, my question is what to do about this. The EFI has several points of failure that cannot be easily fixed on the side of the road. Here are the options as I see them -
1- Buy a new Fuel Command Center (FCC2 or Fitech Force Fuel) and continue with the current configuration. This may be the quickest and most cost effective fix, but I could very easily end up on the side of the road again.
2- Modify the EFI configuration and replace the command center and low pressure pumps with 2 high pressure pumps that route thru the throttle body and return to the fuel fill tube. I think this is similar to what Jim does with his installs. This still leaves several points of failure - the throttle body itself and the pumps/relays.
3- Return the fuel system to stock mechanical configuration (QJet) and install an electric pump for use against vapor lock and to prime the system before starting. I don’t have any of the original parts, but it looks like Jim K has them. This is the most expensive option.
Thanks in advance for the feedback!
Jamie Sharp
South Central PA (Gettysburg area)
'76 Palm Beach, AKA "Grumble"
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