bad tach?or bad connection?
Thread Starter
11 Second Club
Joined: Dec 2004
Posts: 220
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From: Augusta,Ga
bad tach?or bad connection? installed a 5" tach today on my 98 camaro.tapped the signal wire into the #35 white wire on the top of the pcm like everyone said to.
the tach shows an rpm,but its hella laggy and not accurate at all.
could a bad connection cause this?we tried re-doing it but it didnt seem to help.
also if its a cheap tach could that be the problem?its not a name brand tach at all.
help
the tach shows an rpm,but its hella laggy and not accurate at all.
could a bad connection cause this?we tried re-doing it but it didnt seem to help.
also if its a cheap tach could that be the problem?its not a name brand tach at all.
help
Joined: Nov 2003
Posts: 11,328
Likes: 346
From: Jacksonville, FL (originally from Toronto Canada)
Did you set the tach for a 4-cylinder configuration? The LS1 PCM outputs two pulses per revolution so you have to set the tach to 4-cylinder rather than 8-cylinder to get a proper reading.
