Odd electrical problem
Thread Starter
3rd Gear
Joined: May 2024
Posts: 3
Likes: 0
Odd electrical problem
Good afternoon all,
I have an awesome 99 auto with only 50k miles. Unfortunately we moved states and the car sat about 4 months in the rain etc. Today I swapped the battery on it to get it out of the driveway and it would not start. It would start with decent revs but within a few seconds it would sputter out. It would not respond to throttle inputs. The entire time it is throwing messages at me, service engine, no fuel, reduce power, low voltage etc.... Is it possible the battery I installed could be causing some of these issues? The terminals look great with good contact on the battery.
Any help would be appreciated.
I have an awesome 99 auto with only 50k miles. Unfortunately we moved states and the car sat about 4 months in the rain etc. Today I swapped the battery on it to get it out of the driveway and it would not start. It would start with decent revs but within a few seconds it would sputter out. It would not respond to throttle inputs. The entire time it is throwing messages at me, service engine, no fuel, reduce power, low voltage etc.... Is it possible the battery I installed could be causing some of these issues? The terminals look great with good contact on the battery.
Any help would be appreciated.
Moderator, Tech Contributor
Joined: Sep 2013
Posts: 15,430
Likes: 3,981
From: Cape Coral, Florida
Sounds like a serial data issue…you’ll see gas gauge go to E, water temp maxes out and all those warning messages on the DIC will scroll through…if the data line is shorted to power or ground this may happen.
Tech Contributor
Joined: Jan 2007
Posts: 19,356
Likes: 1,127
From: Dyer, IN
Good afternoon all,
I have an awesome 99 auto with only 50k miles. Unfortunately we moved states and the car sat about 4 months in the rain etc. Today I swapped the battery on it to get it out of the driveway and it would not start. It would start with decent revs but within a few seconds it would sputter out. It would not respond to throttle inputs. The entire time it is throwing messages at me, service engine, no fuel, reduce power, low voltage etc.... Is it possible the battery I installed could be causing some of these issues? The terminals look great with good contact on the battery.
Any help would be appreciated.
I have an awesome 99 auto with only 50k miles. Unfortunately we moved states and the car sat about 4 months in the rain etc. Today I swapped the battery on it to get it out of the driveway and it would not start. It would start with decent revs but within a few seconds it would sputter out. It would not respond to throttle inputs. The entire time it is throwing messages at me, service engine, no fuel, reduce power, low voltage etc.... Is it possible the battery I installed could be causing some of these issues? The terminals look great with good contact on the battery.
Any help would be appreciated.
Thread Starter
3rd Gear
Joined: May 2024
Posts: 3
Likes: 0
Lucky131969 told me to check for moisture and I cant believe I didnt even notice about an inch of standing water under the dash on the passenger side. You can see the water line on the PCM and fuse box. The small fuses did not pop but are soaked. The larger looking things at the bottom look super corroded. The battery completely drained overnight.
Right now the effort is on drying it out to prevent mold and to get all the electronics dry. Im unsure of what to do now, replace the pcm and the fuse box?
Regarding the moisture it didnt seem to come from the roof as all side panels and dash etc are dry, just the passenger side floor?
Tech Contributor
Joined: Jan 2007
Posts: 19,356
Likes: 1,127
From: Dyer, IN
Hey everyone,
Lucky131969 told me to check for moisture and I cant believe I didnt even notice about an inch of standing water under the dash on the passenger side. You can see the water line on the PCM and fuse box. The small fuses did not pop but are soaked. The larger looking things at the bottom look super corroded. The battery completely drained overnight.
Right now the effort is on drying it out to prevent mold and to get all the electronics dry. Im unsure of what to do now, replace the pcm and the fuse box?
Regarding the moisture it didnt seem to come from the roof as all side panels and dash etc are dry, just the passenger side floor?
Lucky131969 told me to check for moisture and I cant believe I didnt even notice about an inch of standing water under the dash on the passenger side. You can see the water line on the PCM and fuse box. The small fuses did not pop but are soaked. The larger looking things at the bottom look super corroded. The battery completely drained overnight.
Right now the effort is on drying it out to prevent mold and to get all the electronics dry. Im unsure of what to do now, replace the pcm and the fuse box?
Regarding the moisture it didnt seem to come from the roof as all side panels and dash etc are dry, just the passenger side floor?
Last edited by lucky131969; May 17, 2024 at 01:09 PM.
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Tech Contributor
Joined: Jan 2007
Posts: 19,356
Likes: 1,127
From: Dyer, IN
Thread Starter
3rd Gear
Joined: May 2024
Posts: 3
Likes: 0
Tech Contributor
Joined: Jan 2007
Posts: 19,356
Likes: 1,127
From: Dyer, IN
I don't have any guidance on your technique, or not to have a heavy hand. Just go slow, one at a time. There is plenty of room to work, so nothing should get "hacked up".