74 914 2.0 dJet slight hesitation |
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74 914 2.0 dJet slight hesitation |
nsargeant |
Mar 12 2020, 07:38 AM
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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 |
BeatNavy |
Mar 22 2020, 11:09 AM
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#2
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Certified Professional Scapegoat Group: Members Posts: 2,933 Joined: 26-February 14 From: Easton, MD Member No.: 17,042 Region Association: MidAtlantic Region |
If you're going to give it a shot, here's' more about the MPS than you probably ever wanted to know: https://members.rennlist.com/pbanders/manif...sure_sensor.htm
About 2/3 down there's a summary table of what adjustments do what (richer / leaner / no effect) on idle, part and full load. I will also say: 1. This really SHOULD be done with an inductance meter, a wideband, and Chris Foley's adjustment tools that make it much easier. It is also helpful to have a stock baseline MPS to know how your inductance meter reads. 2. Make adjustments in very small increments (e.g., 1/8th to 1/4 turn). |
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