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voltage tuning?

Old 08-22-2014, 01:06 AM
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Default voltage tuning?

okay so i took my car to AMP for a tune, ended up not being able to get a tune done due to all the sensor were very erratic... example the tps was reading from 1-7% an wasnt even open... another example the coolant temp was ready from 190-210 jumping all over there place...

so i checked all the grounds, an even added 2 engine grounds
changed the ecu out
put the battery on the charger

so basically im thinking the alternator is messed up an is surging power to everything...

i think this is the cause due too when the car isnt running everything is solid an not all jumpy

anyone have thoughts or ever had this problem?
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Old 08-22-2014, 10:03 AM
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Bad battery or alternator most likely would be my guess. Did they log voltage at all when they tried to tune it? Thats one of the first things I log when I have one doing weird stuff.

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Old 08-27-2014, 08:20 PM
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thats what im thinking it is, the alternator.. battery is new but was hooked up backwards, seems to be fine.
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Old 09-10-2014, 01:00 AM
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Can't figure this out need help guys.
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