Problem at 5200 rpm
Problem at 5200 rpm I have a 93 Lt1 a4 which is the speed density set up. I just replaced the entire opti distributer and cap , rotor ,plugs wires, ect. The car starts poping at 5200 rpm for example when I punch it from a 25 roll it starts to pop, missfires up top, but runs fine when driven normaly.Dosent have a check engine light or anything. 
Originally Posted by harvickgm
i would test the coil first and see what the results are.... does it do it more so when its hot or cold??
now does it feel like a random missfire or does it feel more like one cylinder thats doing it?
its also hard to test the ICM... do a tap test and see if that changes anything... get like a 15mm wrench and just start tapping on the coil and then the ICM... and see if it acts up.. if it does then you know whats giving the problem... this will not always work to find problems... but if you get a reaction thats the problem... never fails...
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Originally Posted by GTP PWR
seeing as how he JUSt replaced the entire opti....seems more logical for ti to be a coil. I'd get teh MSD balster one from Summit for cheap. I like mine a lot.
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Originally Posted by BRETTINATOR
agreed, also might consider new 02's if you haven't already replaced them. I use the cheesy Bosch because Orielly has a 1yr warranty and I replace them about every 2 months just for the hell of it. What condition are your plugs in?
Brett get the Delphi O2s, they have a one year warranty and are much better than the Bosch's imo.
Oh and I replaced the tb cable, so now just to get back to track with those et drags
Then I just have to get a new a/c compressor and exhaust back on.
Originally Posted by lt1 97 formula
Edit: Forgot to say another vote for the msd blaster coil.
Brett get the Delphi O2s, they have a one year warranty and are much better than the Bosch's imo.
Oh and I replaced the tb cable, so now just to get back to track with those et drags Then I just have to get a new a/c compressor and exhaust back on.
Brett get the Delphi O2s, they have a one year warranty and are much better than the Bosch's imo.
Oh and I replaced the tb cable, so now just to get back to track with those et drags
Then I just have to get a new a/c compressor and exhaust back on.
Not tonight, im still at work dont get off until 5 so wont get home until near 6 and then I would be leaving katy and havnt even asked if I can borrow those et drags again. Ill let you know next time im going to bring it out.
im sure there is a special tool that can do it... but you cant just do it with a volt meter like you can alot of electronics... where have you taken one to get it tested???
misfire
Originally Posted by 1994Z28Lt1
yeah it definitely sounds like a weak coil to me especially if you just replaced the opti coils when they start to weaken generally cause hard starting when its really cold along with missing under heavy load
now does it feel like a random missfire or does it feel more like one cylinder thats doing it?
now does it feel like a random missfire or does it feel more like one cylinder thats doing it?
misfire
Originally Posted by GOaT Cheese
Real quick...Did this problem occur before, or is this a new problem SINCE you replaced the distributor?
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Joined: Jan 2006
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From: st.charles
check the conector that goes to the opti spark. The one on the pass. side of the intake. one of the prongs might have pushed up when u pot it back on and not making a good conection. It makes it seem like an opti problem.
