88 n/a supra running rich - Toyota Nation Forum : Toyota Car and Truck Forums

supraman508 · 08-27-2008, 07:42 PM

A month ago my supra was running rich after i forgot to move the shoestring that i have tied around the afm plug to give it a tighter connection.Since i forgot to do so i started the engine and it made a weird sound and then it cut off.I poped the hood and saw the shoestring and the afm plug totally cut off from the harnes so i had to rewire the afm plug back onto the harnes and surprisingly it started back up.Thats when it started to have black smoke come from the muffler and she eats gas like she gets 10milse to the gallon.I have replaced the knock sensor and the fuel pressure regulator thinking that it would'nt run rich anymore but ofcorse i was wrong,so i did a self diag on the supercomputer and code 31 poped up which is afm signal.I'm thinking that when the fan caught the shoestring that when it pulled the plug out of the afm forcefully and cut it off from the harnes that it would of had to short curcuited the meter.Could a half dead meter cause the vehicle to run rich since i drove all the way down d.c from hagerstown and had to hit 3 gasstation just to drive a 120 milse round trip

***bgrieger*** · 08-27-2008, 08:31 PM

Given you have an AFM code showing, I'm going to go out on a limb and say yes, it's possible.

Of course, I would have fixed the harness connector with something a little less Elmer Fudd than a shoestring so I could tell if it was my jacked up attempt to fix a wiring problem or the AFM itself...wait a minute...How can you spend the time and effort replacing a knock sensor and a fuel pressure regulator after noticing that "gee, when the shoelace is cut the car don't run so good" and somehow not come to the conclusion that you should start there???

Quote:

Originally Posted by supraman508

A month ago my supra was running rich after i forgot to move the shoestring that i have tied around the afm plug to give it a tighter connection.Since i forgot to do so i started the engine and it made a weird sound and then it cut off.I poped the hood and saw the shoestring and the afm plug totally cut off from the harnes so i had to rewire the afm plug back onto the harnes and surprisingly it started back up.Thats when it started to have black smoke come from the muffler and she eats gas like she gets 10milse to the gallon.I have replaced the knock sensor and the fuel pressure regulator thinking that it would'nt run rich anymore but ofcorse i was wrong,so i did a self diag on the supercomputer and code 31 poped up which is afm signal.I'm thinking that when the fan caught the shoestring that when it pulled the plug out of the afm forcefully and cut it off from the harnes that it would of had to short curcuited the meter.Could a half dead meter cause the vehicle to run rich since i drove all the way down d.c from hagerstown and had to hit 3 gasstation just to drive a 120 milse round trip

Tourer · 08-28-2008, 12:09 AM

Unscrew spark plug, or replace them.... The black smoke that that fuel badly burns , a problem in spark plug , has polluted them... Or clear them in gasoline ...

supraman508 · 08-28-2008, 12:17 AM

Quote:

Originally Posted by Tourer

Unscrew spark plug, or replace them.... The black smoke that that fuel badly burns , a problem in spark plug , has polluted them... Or clear them in gasoline ...

I'll try that plus i'll order a knew afm do to the ohm reading are not good thanks guys

supraman508 · 09-05-2008, 06:59 PM

well after changing the fuel pressure regulator,knocksensor,sparkplugs,and a.f.m she is still running rich.I changed the afm do to a code 31 thinking that the meter had a short but it does not.lastweek she did'nt start to i bought new ngk plugs yet still i see stacks of money coming out the muffler.sarcasm and opinions are welcome

willtotheumm · 09-07-2008, 02:56 AM

*eyes hurt* I couldnt stand to read the last bit there buddy.

Like Bgrieger said, if it's showing the AFM code then... yeah. Odds are its going to be the AFM. Start with the simplest things and work your way up.

supraman508 · 09-09-2008, 07:43 PM

Quote:

Originally Posted by willtotheumm

*eyes hurt* I couldnt stand to read the last bit there buddy.

Like Bgrieger said, if it's showing the AFM code then... yeah. Odds are its going to be the AFM. Start with the simplest things and work your way up.

christine has an appt. on thursday morning with the dealership cause i'm gonna have a mfen stroke if i don't get her back on the road since i only had her for a year and 2 moths and only put 2,000 milses on her.so by friday depending on how much it's gona cost me to have her running good again either i will do it myself or let them do it depending on what they say needs replaced.keep yalls fingers crossed.