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 |
nsargeant |
Mar 16 2020, 05:07 AM
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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 |
So I went through the distributor and cleaned everything, it needed it, but I still have the hesitation. I'm certain my vacuum advance is working better now though. When i did the test drive i noticed the hesitation a couple times at steady throttle just as I was going up a hill as well. I dont know if I had picked up on that before. you pick up more when you turn the radio off. It also did it at no incline as well. It seemed to be more prevalent when it encountered more of a load at steady throttle though. Another thing I noticed was the throttle transitions weren't always smooth. For instance if i coasted down to 60 and then back up to 70 repeatedly. I have replaced the tps last year but I can look into that again. I will look into the grounds for the fuel injection harness next and then check vacuum and resistance on the mps.
nathan |
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