Tach/engine jumping up and down... help please |
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Tach/engine jumping up and down... help please |
tod914 |
Jul 8 2007, 11:20 AM
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#1
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Advanced Member Group: Members Posts: 3,755 Joined: 19-January 03 From: Lincoln Park, NJ Member No.: 170 |
Just started happening. The car is a 75 2.0 with fuel injection. It has a pertronix ignition. The problem is, it seems to be jumping up and down in the rmp's and idles very low. Idle adjustment didnt seem to help. I checked all the grounds and contacts including the tranny strap. I swapped out the voltage reg and throttle switch and the problem still persisted.
Computer problem? Timeing problem? timeing was done last year, fi trigger points a few years old. Pertronix problem? its about 4 years old Bad coil? 4 years old Grounding issue? has new fi harness from bowsby - 2 years old Head temp sensor? its about 2 years old. What would you all suggest. Thanks for the help, Tod |
shaggy |
Jul 8 2007, 01:00 PM
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#2
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mechanic/welder/fabricator Group: Members Posts: 702 Joined: 26-September 05 From: Gilbert, AZ Member No.: 4,869 Region Association: None |
when i still had points mine did that same thing.
as i investigated i found that the plastic part on the points had broken. i changed to pertronix. is it possible you fried the pertronix? this can be done by turning the ignition to the on position and leaving it there. if the unit is on a closed position you can toast the unit. i did trying to prime the fuel system... if you have a dead pertronix it will do all sorts of funny stuff. ex. not light. not idle. stumble. ect. hope that has in some way helped. -jim |
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