single gas tank
Drifting
Joined: Jul 2002
Posts: 1,613
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From: Spring Tx
Does that mean I could change out or clean my right side fuel sender without excessive spillage if I did it with the engine running,and the total fuel amount less than half a tank since that tank would be empty, or did I totally misread the above technical information.
Racer
Joined: Jul 2004
Posts: 405
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From: Colorado Springs CO.
Originally Posted by 70 LS1
The reason I asked is all these tech bulletins people pull out are extremely useful to a guy trying to retrofit C5 systems onto his C3. Just trying to get access to as many as possible.
Below is another bit of information, also from GM Engineering, discussing the current C6 fuel sensor problem. I post this as it differentiates between the problems associated with different model year cars. It was written 5/22/05.
This is a Service VME to all Chevrolet dealers relating to 1997 -2005
Corvettes with erratic fuel gauges,
For 1997 to early 2003 or pre-FFS fuel systems, sulfur contamination was
the primary cause of erratic gauges. The use of Techron fuel system
cleaner was very successful in removing the sulphur contamination, Again
this was for PRE FFS systems.
The primary cause for erratic gages in the Corvette fuel system (2003 FFS,
2004, and 2005) have not been due to additives or aggressive sulfur (which
is not considered an additive). These sender cards have been updated to
the latest noble metal content that meets the new corporate requirements.
When this was implemented in BG on 11/17/04, the ink on the sender card was
not produced to print. This can cause either sender circuit to go "open"
when that tank is full and set a DTC, which causes the gage to drop.
Properly produced parts were implemented in BG on 4/1/05.
To correct this condition a service kit has been released. For the left
side part
88967316 includes the sender and the o-Ring. A kit for the right side will
be available shortly. Dealers are reminded that replacing the complete
fuel module is not an acceptable repair when only the sender is required.
As soon as the right sender becomes available a VME and bulletin will be
issued.
[and a follow-on to the above]
The issue with 2005 cars is the printed ink (This is where the resistance
is) on the fuel sender card does not go far enough and when the left tank
is filled the high fuel level forces the contact on the card past the end
of the ink path. This basically causes an open in the circuit that the BCM
does not understand and it drives the gauge to E. The reason it is
predominately on the left side is that is the tank that stays full the
longest. Remember the fuel enters the left and transfers to the right
side. The fuel is drawn from the right side first so the left tank stays
full longer. Anytime the fuel sender is forced off the ink path the gauge
will loose contact.
As of last week there was stock in SPO for the left side and more was in
shipment, Dealers misunderstand the system and think they need to replace
both senders. They do not. The correction is to replace the sender card
only in the left tank
