The erroneous fuel gauge readings may be unrelated, as level sensor faults are possible. The ELC compressor should only exhaust when the key is off, the compressor should not run. This is to accomodate a vehicle that is unloaded after parking. A vehicle that is loaded with the key off, will cause the compressor to activate at first ignition event. On the blower/ipc concerns, they are a bit bizarre. At first glance I would suspect a corrupt cluster, since it is having cluster issues, and the HVAC functions are requested from the cluster. You say there are no 'engine' codes, are there any codes? If it was checked with a code reader, it would just tell you engine codes. If you have not, run the diagnostics through the IPC by pressing off and warmer on the climate panel with the key on. After the segment check, it will display codes for all modules. Reply them to post. Another possibility would be to look for an IPC fuse, or disconnect the IPC, and at least see if the blower still turns on. Basically, a request is sent over the data line to the AC programmer, and it controls the speed of the blower. Take note of what speed the blower comes on at, when the key is off. Does it remain at the speed it was last shut down at, or does it ramp up to full speed?
Saturday, October 9th, 2010 AT 2:00 PM