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mark houghton mark houghton is offline
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Join Date: Jul 2008
Location: Central Washington State
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These typically mount to the boost recirculation manifold, not directly to the intercooler. It will still read the boost signal fine on the IC, but there is the possibility that the sender is not seeing a good ground because the IC itself is not grounded due to the rubber o'rings and rubber grommetted mounts. Even though you have the white wire connected, you may also need to run a ground wire to the sender itself.
I should remember this stuff but time fades memory. It may be just the opposite of what I said earlier about the gauge pegging if you were to ground out the white wire. That sender is just a variable resistor that responds by changing it's resistance in response to boost air pressure. The higher the pressure, the more resistance. If the wire is completely disconnected (and that could be mimicked by no ground on the body of the sender) then your gauge may peg to max. In other words, try disconnecting the wire and grounding it somewhere, and see if your gauge returns to zero. If so, that's good news for the gauge. Then hook it back up and run a temporary ground to the sender and the gauge should stay at zero.
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Mark H. 1987 930, GP White, Wevo shifter, Borla exhaust, stock everything else. The result of a massive Pelicanite good will fire recovery effort. Truely an open book, ready for the slippery slopes to modification.
Old 04-24-2013, 04:59 AM
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