 Hesitation/miss at steady throttle |
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| nsargeant |
 Jun 3 2018, 05:06 PM
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#1
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Newbie  Group: Members Posts: 12 Joined: 27-August 17 From: Vincennes, In Member No.: 21,381 Region Association: Upper MidWest  |
I have a 1974 914 2.0 that I purchased last summer. When I bought it the connector to the TPS was unhooked. It seemed to run a bit rich and load up a little right after starting but outside of that,seemed to run ok without any hesitations. After i fixed a couple wires and hooked it up it ran better. Better throttle response, better starts, and even seems a little quicker. It seems after it warms up though i will get a miss occasionally while at a steady throttle. As soon as i accelerate when it is missing it comes out of it. It will probably miss/hesitate a few times in a 10 mile drive. Seems to happen in between 3-4000 rpm. Is this a common problem with a TPS going out? am I even looking in the right direction? It doesn't seem to do it when the plug is unhooked from the tps.
Thanks, Nathan |
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| BeatNavy |
Jun 3 2018, 05:21 PM
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#2
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Certified Professional Scapegoat Group: Members Posts: 2,924 Joined: 26-February 14 From: Easton, MD Member No.: 17,042 Region Association: MidAtlantic Region 
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This is a pretty well known problem with the TPS. It could be ignition or fuel-delivery related, but if you're not seeing it with the TPS disconnected, then that's probably your issue (also because the PO likely disconnected for that reason),
Here's a long thread on the subject: http://www.914world.com/bbs2/index.php?showtopic=95583 914Rubber sells the replacement "kit" for the TPS board. It's a pretty straightforward fix with basic tools. Swap the board, calibrate it, and hopefully you don't have the issue again. |
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| Mikey914 |
Jun 4 2018, 05:31 AM
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#3
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The rubber man Group: Members Posts: 12,677 Joined: 27-December 04 From: Hillsboro, OR Member No.: 3,348 Region Association: None
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I have the biards if you need them.
Even the early 1.7 for those that need them https://shop.914rubber.com/searchquick-subm...sc?keywords=Tps Attached thumbnail(s) 
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