I have 3 probs with this 98 GTP 3800 SC HUD.
1. The Oil Level Indicator light comes on whenever the engine is running and the transmission is taken out of PARK. Precisely, the light is OFF in Park, 1, and 2, but is ON in R, N, D, and 3. I have replaced the Oil Level Sensor and thoroughly cleaned the connector at oil pan. PROBLEM PERSISTS.
2. The PRND321 Indicators on the I/P work as follows: In P and in 3 both, the indicator on the panel is "P". In all other gears, RND21, no indicators are lit on the panel.
3. The temperature gauge never moves off min, except when first turned on, at which time the needle moves to max and back to min over a period of about 1 second, then never moves off min while running. Scanner reveals engine does appear to operate at normal temperatures. Found that this is a 3-wire sensor, meaning the scanner and gauge get their signals from the exact same source via different wires. I concluded the output was bad for the gauge from the sensor and replaced the sensor. PROBLEM PERSISTS.
I replaced the instrument cluster to get at least 1 if not all problems resolved to no avail. ALL 3 PROBLEMS PERSIST.
I replaced both battery cables including satellite cables because I found that the battery wasn't anchored and at some point both the + and - parallel and both wires had gotten into the SC idler pulley. The wires were significantly compromised with a lot of green corrosion. Wiring replaced and solid grounding assured, ALL 3 ORIGINAL PROBLEMS PERSIST
Any help in this matter will be greatly appreciated, as it seems these problems must all originate in the same place. Thanks
