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nsargeant |
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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 ![]() |
In the quest for a perfect running 914 im getting oh so close. In the past I have replaced the tps with a new one that fixed the severe bucking/hesitation. The car ran so much better after that. What I am trying to figure out now is a random hesitation/hiccup that happens mostly during steady throttle when I am cruising on a highway. If I drive 30 miles it might happen once or twice. It seems pretty minor compared to the bucking I was having with the old tps. If I recall it has had this hesitation since I have owned the car for the last 3 years. I know the distributor does have a pertronix module in it. Ive recently changed replaced a few things listed below but still have that little hiccup. What would you guys investigate next?
Replaced: Fuel pump/filter Installed SS lines plugs, wires, rotor, (cap still looked new) tps sensor |
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nsargeant |
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#2
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Newbie ![]() Group: Members Posts: 12 Joined: 27-August 17 From: Vincennes, In Member No.: 21,381 Region Association: Upper MidWest ![]() |
[quote name='dr914@autoatlanta.com' date='Mar 16 2020, 09:42 AM' post='2794711']
maybe a less than tight ground lead on the back of the block I would assume I get access to this from the bottom side? What side is it located on? I will also check the vacuum on the mps when I get my hands on a tester thanks, Nathan |
BeatNavy |
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#3
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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 ![]() ![]() |
maybe a less than tight ground lead on the back of the block I would assume I get access to this from the bottom side? What side is it located on? I will also check the vacuum on the mps when I get my hands on a tester There is a multi-spade (3 connectors) ground that's on the top middle part of the case toward the back. It's underneath the plenum, and it held on by a case bolt. You should make sure those are clean and the 3 FI connectors connect tightly to them. You're going to need to remove the air cleaner. I think you can access it without removing the plenum (it's underneath and behind it). |
nsargeant |
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#4
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Newbie ![]() Group: Members Posts: 12 Joined: 27-August 17 From: Vincennes, In Member No.: 21,381 Region Association: Upper MidWest ![]() |
maybe a less than tight ground lead on the back of the block I would assume I get access to this from the bottom side? What side is it located on? I will also check the vacuum on the mps when I get my hands on a tester There is a multi-spade (3 connectors) ground that's on the top middle part of the case toward the back. It's underneath the plenum, and it held on by a case bolt. You should make sure those are clean and the 3 FI connectors connect tightly to them. You're going to need to remove the air cleaner. I think you can access it without removing the plenum (it's underneath and behind it). Looked at that yesterday evening and all seemed decent. Connections were a little dirty (greasy) but tight. They had been spliced into with new wires but appeared to be done right with solder and shrink tube. I will clean them up and then vacuum test the mps. thought I would give you guys an update. thanks for all of your help nathan |
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