Trouble shooting some problems

Gravy · 09-30-2008

Well, good news/bad news now. I ran around on 3sx and found a nice IAC reset and followed that. Little different than the DSM, but fixed it. Car now idles between 800 and 900 rpm's with a SMALL surge in it, but i'm not worried on that.

AFR is still being a bit screwy on me, and it miss fires if i run anything richer than 13:1 under WOT. Also goes though a weird phase like it was before all these problems occured, where i get the car cruising at 55mph and it runs around 15:1 and drives just fine. After about 61 seconds, like clockwork, it goes from 15:1 down to about 11:1 or 10:1. Going to put the logger on it later tomorrow and see what the problem is, and if it's showing up there. If not.... back to the drawing boards. Before when i tried pulling the code, it just told me the O2 sensor was bad when the check engine light came on.

niterydr · 10-08-2008

Quote:

Originally Posted by Gravy

Well, good news/bad news now. I ran around on 3sx and found a nice IAC reset and followed that. Little different than the DSM, but fixed it. Car now idles between 800 and 900 rpm's with a SMALL surge in it, but i'm not worried on that.

AFR is still being a bit screwy on me, and it miss fires if i run anything richer than 13:1 under WOT. Also goes though a weird phase like it was before all these problems occured, where i get the car cruising at 55mph and it runs around 15:1 and drives just fine. After about 61 seconds, like clockwork, it goes from 15:1 down to about 11:1 or 10:1. Going to put the logger on it later tomorrow and see what the problem is, and if it's showing up there. If not.... back to the drawing boards. Before when i tried pulling the code, it just told me the O2 sensor was bad when the check engine light came on.

How old are your coils and ignition transistor?

Having the car go rich would indicate a loss of spark or surplus of fuel all of a sudden.

Gravy · 10-09-2008

Does it both cruising down the road or at idle, my 02 voltage(factory) doesn't change at all, and i figure from going 10:1 to as high as 16:1 would have to put out a check engine light while sitting still. But only does it durring driving conditions.

After running around on 3si, and talking to a few people, i seem to get a little bit too much knock under throttle and a count or two under idle. Going to replace knock sensor and drop down to 450cc injectors in the months to come.

Gravy · 10-14-2008

Now last night after idling the car.... i'm getting 20 some counts of knock at idle..... Sherlock, i think i'm onto something.

Anyone know what our max knock count on our cars SHOULD get to? I though i saw a rather high spike. But want to figure out first.

Gravy

P.S. Sorry for double post, new info, new question.