Author Topic: installed a cam. problems accelerating?? :smack:  (Read 669 times)

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79toy

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installed a cam. problems accelerating?? :smack:
« on: Mar 13, 2008, 05:57:46 PM »
ok so me and my uncle installed an lc cam yesterday and i havent been ableto figure out why its running rough.  at idle it sounds good at around 1000rpm but when im accelerating at mid-range rpm (no tach :() it starts sputtering real bad.  at higher rpms it clears up.  ive done a lot of research and i think it might be my tps is out of adjustment.  but my question is can the tps cause this condition even though we did not touch it?  does it need to be adjusted because of the new cam.  i know the dizzy timing is good.  ive ohmed out the tps according to this table:

Test   Clearance between
   lever and stop screw   Between terminals   Resistance / '89*-'95 (ohms)
1.   0.00mm (0.000")      VTA - E2      470-6100
2.   0.57mm (0.0224")   IDL - E2      <2.3K
3.   0.85mm (0.0335")   IDL - E2      open / Infinite
4.   Wide Open Throttle   VTA - E2      3.1K - 12.1 K
5.   n / a         c - E2         3.9K - 9.0K

my conclusions were:

Test   Clearance between
   lever and stop screw   Between terminals   Resistance / '89*-'95 (ohms)
1.   0.00mm (0.000")      VTA - E2      1.02k
2.   0.57mm (0.0224")   IDL - E2      open
3.   0.85mm (0.0335")   IDL - E2      open
4.   Wide Open Throttle   VTA - E2      3.5k
5.   n / a         c - E2         6.9k


it seems to be out of adjustment but why didnt the truck have this problem with the stock cam?  any help would be great.


TRACKER

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this may sound silly did you adjust the valves? make sure you are on time at cam time and ignition

good luck
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