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02-10-2010, 07:08 PM | #1 |
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Dead spot on the throttle
Ok - on my 87 turbo coupe I have a dead spot on the throttle. When I rev it up, it goes from 1200 to 2000 rpm. I can't get it anywhere in between. I checked the throttle positioning sensor (tps) and the voltage increases as it's supposed to... So, I'm kinda stumped.
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-Don 86GT (sleeping in the garage for now) 87 T-bird Turbo Coupe (daily driver) 87 Ranger ($100 work truck) Meat is murder!... Tasty, tasty murder. |
02-10-2010, 07:38 PM | #2 |
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If you check resistance instead of voltage (with it disconnected) you will see the dead spot . Definately the TPS
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02-10-2010, 07:51 PM | #3 |
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Eric 89 LX Coupe-Juiced 01 Lightning-Boost 06 TBSS |
02-10-2010, 08:16 PM | #4 |
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Huh... never tried that before. Makes sense. I'll try that this weekend. Thanks!!!
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-Don 86GT (sleeping in the garage for now) 87 T-bird Turbo Coupe (daily driver) 87 Ranger ($100 work truck) Meat is murder!... Tasty, tasty murder. |
02-11-2010, 04:44 AM | #5 |
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I can't think of the name of it now but the Box before the turbo will cause this also. VAM. You can pop the top off of it and clean it with a scotch pad. The tps is much easier to check so start there first! I'm sure I have an extra one in the shop if you find a problem. A few years ago the VAM was $100 with a core at the zone.
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02-11-2010, 06:15 AM | #6 | |
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Quote:
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