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3800 w/Gauge Fix Not Working by rbell2915
Started on: 09-14-2025 01:47 PM
Replies: 1 (22 views)
Last post by: 1985 Fiero GT on 09-14-2025 02:31 PM
rbell2915
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Report this Post09-14-2025 01:47 PM Click Here to See the Profile for rbell2915Send a Private Message to rbell2915Edit/Delete MessageReply w/QuoteDirect Link to This Post
Hey there! I have a new to me 3800SC Formula and I just did the temp gauge fix on the cluster side. It no longer pegs on start up anymore. Unfortunately, the gauge says at 100 degrees and does not move. Do I need to switch the wires at the coolant sensor or do something else? Thanks!
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1985 Fiero GT
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Report this Post09-14-2025 02:31 PM Click Here to See the Profile for 1985 Fiero GTSend a Private Message to 1985 Fiero GTEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by rbell2915:

Hey there! I have a new to me 3800SC Formula and I just did the temp gauge fix on the cluster side. It no longer pegs on start up anymore. Unfortunately, the gauge says at 100 degrees and does not move. Do I need to switch the wires at the coolant sensor or do something else? Thanks!


Yes, one wire is a simple switch, the other is the gauge, if you switch them in the the cabin you need to switch them on the engine too.
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