Help needed: Code 42 - Electronic Spark Control Error

[tomtom72]

Demps....check your PM's.

[oricale]

Got em'! tom!!

TOM: Did you expereince the same symptoms/...hesitation and lack of power??How about idle fluctuation?...

IF NOT,.. would it be possible that the fluctuation is due to the little check valve under the plenum is either failing or backwards?......AND what is the check valve actually used for IF I have eliminated all the secondaries and smog/air crap!!

[tomtom72]

sorry, I was e-mailing my Boss.

Check valve is to keep vacuum in the tank as a reserve & source at wot..I think. If it was in backwards then maybe it's a big vacuum leak. Without secondaries it is redundant I think???

When I had my mistake & bent the pin the symptoms were as follows:
SES light lite always; batch fire on injectors; no secondary function ( I still have my system OE) no balls, not that it mattered. Also the entire ignition system uses only the ESC box which is a limp home feature so you don't get stuck.

I'm no expert ( I'm a master of understatement though! ) on LT5's sans secondaries. To me if it's generally sputtering, like loading up? Then the fueling and or the timing is bad? Or the injectors are dumping too much fuel? Or there could be a vacuum leak the size of the grand canyon? That's JMHO.

I'll hold off on the DIS box if you like. Use my e-mail addy posted to advise me of what you want to do going forward, okay?


Tom

[oricale]

Tom...NO..proceed, these are the same issues I have,..did you have a code 42 or????...here are my symptoms:

1. Fluctuation at idle either after 4 min at idle or after reving up...800-1100
2. 1st gear has no balls,
3. hesitation (although slight)
4. a back fire every no and again
5. NO BALLS!(cant spin tires, doesnt "really" put you back in the seat!
6. 4 gear..stomp on it and I got smoke at the pipes(not sure how much)
7. on high rev down to stop, makes a wierd sputter ("release" rythm like the idle)

ALSO! who here can work on a throttle body or can tell me how I can fix a throttle body that I have to tap to get the throttle down??

[tomtom72]

Okay, I'll try to get to the Post Office at lunch. Not looking too good as a major redecoration project at my job is going sideways, and fast!

Yes I had a 42. It was the bent pin preventing proper communication(?) or preventing the ECM from knowing that the DIS box was 'there & willing to work'? I'm not sure which, but the result was the ESC box and the starting protocols in the ECM took over management of the ignition system. The result is a somewhat sick LT5 with useless extra fuel injectors!


Tom

[oricale]

Holy S^&%t that might be the whole issue!!!

[tomtom72]

Demps, you have a PM. The long & the short is the USPS says tomorrow you will have mail!


Tom

[tomtom72]

Yo Demps! Please tell me that the DIS arrived today?

[oricale]

SOLVED!!!!... It was a damn pin!!!just like tom had....I couldnt see it till I pulled the ignition module out at compared it to one Tom sent me(you rock Tom!!) the pin was buried!!!!..So no codes, idle seems solid... ....NOW ANOTHER PROBLEM!!!!!!(SEE NEW POST!!!" Almost BG bound-Need help AGAIN"

Again thanks for the info and assistance!!!!

[tomtom72]

Yo Demps, who is C. Perry???? They signed for my DIS box yesterday at 11:45 AM. Do you have my DIS? Speak to me please.


Tom