supra12big
Jul 8, 2008 - 11:04 PM
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So, i have this very low missfire/thump at around 1200 rpms, but if i play with the tps i can almost change the location of this missfire/thump, its very werid, and i believe it affects driving throughout the rpm range
Parts i have changed out.
Plugs
Wires
Cap+Rotor
Fuel Filter
TPS
anyone have any ideas/methods of testing things?
when the tps is disconnected it misses alot more
mneal2_92788
Jul 8, 2008 - 11:12 PM
change teh O2
supra12big
Jul 9, 2008 - 1:25 AM
o2 seems to be in check, goes into loop at idle, and open when driving, i don't believe its the o2
supra12big
Jul 10, 2008 - 1:25 PM
anyone else got a clue? i did a boost leak down test, set timing..
lagos
Jul 10, 2008 - 2:14 PM
what bov are you using?
have you tried...
1. setting your tps to its factory position?
2. changing your cap/rotor/wires/plugs?
3. a new coil?
95celgt
Jul 10, 2008 - 5:21 PM
meh....check compression, bad ringland will cause this....did it to me anyway...
supra12big
Jul 10, 2008 - 8:36 PM
tps is new, and is set to factory position, brand new spark plugs, and wires, cap and rotor have about 2k on them, waiting on a coil, the one that is in there did pass the test, compression is 180 across the boards, using a hks ssqv(has given me no problems)
also when driving and light throttle is applied/vac is between 20-10 it kinda bucks/thumps, but when i give it some more gas it seems to go away, but i believe myself that its the igintion, and i doubt its my ignitor since it doesn't follow in those symptoms, hopefully the coil will do it
I do pull off 21vac at idle, but when my car is around 2k on the dev rev it gets really low like 25-26 while it pops, lol
supra12big
Jul 15, 2008 - 9:57 PM
anyone????
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