1974 2.0 Hesitation at 3100RPM (Solved) |
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1974 2.0 Hesitation at 3100RPM (Solved) |
Nojoah |
May 7 2020, 12:32 PM
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#1
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Member Group: Members Posts: 119 Joined: 6-May 20 From: Ontario Member No.: 24,234 Region Association: Canada |
Hello again, I just posted yesterday with some questions about installing an ignitor II Electronic ignition. Well today I went to change out the points and apparently the previous owner had installed an ignitor I already. I replaced this anyway and the car still has the same issue so I'm assuming it has nothing to do with the ignition. The car runs perfectly, idles great when warm, and revs with no hesitation while in neutral. While driving though, it accelerates great up until about 3100 RPM when the car seems to hesitate and refuses to rev past when the throttle is pushed. A slight bucking can be felt if you pay attention but VERY slight. If you back it off and apply extremely gentle and steady pressure the car does seem to rev past this point slowly though... Any ideas? Has anyone had a similar problem with their car? Timing is set perfectly at 27 BTDC at 3500 RPM.
Note - Car still had original FI, with original distributor (Apart from electronic ignition) |
Nojoah |
May 8 2020, 12:02 PM
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#2
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Member Group: Members Posts: 119 Joined: 6-May 20 From: Ontario Member No.: 24,234 Region Association: Canada |
Heres a little update.
Unplugged the TPS and went for a drive. The car accelerated poorly (as to be expected), but seemed to accelerate through the certain RPM range that was causing me problems. I took off the TPS and found that the circuit board was very gouged. Almost certain that this was the problem. I took some pictures. A new board should be on the way shortly thanks to 914 Rubber. Attached thumbnail(s) |
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