2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

miss firing on primary coil every 15-20seconds

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Old Dec 3, 2006 | 05:51 PM
  #1  
NZ_87_TURBO's Avatar
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miss firing on primary coil every 15-20seconds

Im having a couple of teething issues still
1 my idol is way up the waazoo. but ill get to that in a sec

I checked and adjusted my timing with a "snap on" timing gun ( set right ) and my timing was maybe 5 degrees out so i adjusted that. Now while checking this i noticed a miss every 15-20 ( possibly 30) seconds? This isnt normal right????
My coils have the correct risistance etc so would it be my ignitor?
i had no miss on my secondarys.

Idol.
My idol is all over the show. I installed a new second hand tps that i checked the risistance on and it was all good. I set it to 1K ohm on a warm engine
some times my car idols at 2300 rpm but if i put my foot under the pedal and pull it out ( sticky pedal or something ) it drops to 1500
sometimes it even hunts!!!
sometimes it idols at 700
sometimes it will just die ( which isnt helpful after coming home from a boost and the car wont let the turbo timer do its job )
The screw in my BAC is stuffed and i cant turn it at all, not even to remove and replace it

what can i do? My throttle cable is almost at the end of its adjustment
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Old Dec 4, 2006 | 01:17 PM
  #2  
NZ_87_TURBO's Avatar
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long live the monster BP
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so no body knows anything? come on guys. you must know something
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Old Dec 4, 2006 | 03:50 PM
  #3  
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How did you determin the miss? Did the flashing light on the timing gun not flash for a split second? If so it doesn't mean its missing, possibly just got interference from another wire or didn't pick up the electrical pulse in the wire its self.
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Old Dec 4, 2006 | 06:55 PM
  #4  
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long live the monster BP
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yea thats exactly how i determined it. it dosnt sound like its missing but the light was telling me other wise.
Thanks for the suggestion. you may be right ( i hope so )
Anyone else have any thoughts?
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Old Dec 4, 2006 | 07:07 PM
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slpin's Avatar
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unhook tps and see if it misses
if that "fixed" it, it is actually a misadjusted tps and/or vac leak.
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Old Dec 4, 2006 | 08:42 PM
  #6  
RETed's Avatar
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It's normal for it to miss.

It's spelled i-d-l-e not "idol".


-Ted
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Old Dec 4, 2006 | 08:44 PM
  #7  
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long live the monster BP
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cheers ted - dam forums that dont have spell check

so it is normal then. ok well thats sweet as then
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Old Dec 5, 2006 | 01:30 AM
  #8  
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If you set the timing with the rpms at anything over 1100 rpms.................then you screwed up.

The ECU advances the idle anytime your over about 1150-1200 rpms. So, you can see that if the idle was over 1100rpm, you did NOT set the timing to Lead -5 and Trail -20. Right? Right. Done
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Old Dec 5, 2006 | 02:32 PM
  #9  
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it was idoling around 700 when adjusted.
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