1990 tachometer issue
Thread Starter
Intermediate
Joined: Jun 2007
Posts: 44
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1990 tachometer issue
I have asked this question before so please bear with me. My tach has quit working. From what I have been told the problem is probably the tach filter. I have identified the lead wires from the distributor that I believe is the tach wire. It goes down between the left rear cylinder and the firewall. but I cannot locate the tach filter. What does the filter look like? the part can be ordered and is inexpensive but I need to know hwere the filter is and what it looks like. Help. Be specific.
Le Mans Master
Joined: Oct 2003
Posts: 6,130
Likes: 2
From: seattle WA
Take a look at this...might help.
http://my.execpc.com/C4/4A/rodney1/corvette
Incidentally, Gordon Killebrew says, most tach problems are associated with water entering the main bulkhead connector (the large one in the engine compartment) the tach connection is in the lower row of pins. Unfortunately the General never sealed the connection.
Checked to see if the site is still working...which it is, but I did notice it only stated up til 1989...don't know if there the same, but at least you can get a look at tach filters.
http://my.execpc.com/C4/4A/rodney1/corvette
Incidentally, Gordon Killebrew says, most tach problems are associated with water entering the main bulkhead connector (the large one in the engine compartment) the tach connection is in the lower row of pins. Unfortunately the General never sealed the connection.
Checked to see if the site is still working...which it is, but I did notice it only stated up til 1989...don't know if there the same, but at least you can get a look at tach filters.
Last edited by rick lambert; Sep 17, 2007 at 09:27 AM.
Racer
Joined: Aug 2005
Posts: 336
Likes: 3
From: State of Confusion
I used to think that my car was idling at 950 RPM, until I tested it with an automotive multi-meter. It idles in the 720-730 range, makes me wonder how far off it is at 5000!
