UPDATE: Speed5hornets new part and countless promlems! NEED HELP

haha yeah i know its the frankenstein engine bay...really it is. My plans are...once get my winter truck back on thursday (so this weekend) i will try to move my wiring harness out of the way as much as possible to try to not "pinch" the vac line going to the s.s. And then remove my cruise control ;) Then go out driving and record my a.f ratios while driving and compare them with what "perfect" a/f ratios should be. Then call pg and mazda dealer to fix tune, look into injector seals...although pg replaced the injector o-rings when they did the install.....


and yes when the car is either cruizing by itselfish or when i let off/get back on the gas the a/f ratios ping at 11 sooo i guess its kinda doing that
 
OK, I'd say your first culprit is that vac line for the SSAFC. you might wanna look at cutting the grommet to free up some space for that vac line... but however you do it, just make sure its not getting pinched.

however, I think you've got another problem because you shoulda noticed that before the IM change if that was all that was goin on, unless it was already a problem and that just made it worse. sounds like the injector bosses should be fine if they replaced the O-rings especially since it is a random misfire, and not one cylinder all the time. Other than possibly the tune, I don't know what it would be.
 
cam was the code he got, and it sounds to me like it was just because PG tried to start it with the sensor not plugged in. (oops)
 
lol, that'll do it

sorry, haven't had a chance to read through the rest of the posts...I'll comment later when I get more time
 
haha ok thanks....yeah i just check "perfect" a/f ratios and im realllllly rich at idle lol like 16-18, wonder if its supposed to be higher with that 626 IM but i doubt that high..
 
16-18 that's lean...

and 14.7 is perfect stoich, and should be a little lean 14-16 during idle and when you decelerate in gear you will induce fuel cut and the readings will again go to like 16-18...
 
the 626 will mess with your AFRs.. and you definitely running rich at idle, I could smell it. I think regardless of if it "solves" your problem, you probably should retune.
 
wha? 16-18 is lean? i did a search and found thread sayin 16-18 is rich at idle...and trust me dude...it reaks like gas lol its litteraly pouring out of the exhaust
 
14.7 is stoich anything higher is lean anything lower is rich.

if u are idling at 16-18 you most likely have an exhaust leak (assuming everything else is ok). this can be from the exhaust manifold all the way to the 2nd exhaust 02 sensor. i know it sounds weird but i had a leak in my s and j pipe and it did the same thing. i would assume the smell your smelling is exhaust bypassing the cats. if you had a boost leak or vac leak your boost gauge would read less than 20in hg.

You should be around 14.3-15.1 bouncing around 14.7 on a msp ecu. if you have an afc or anything like that i would put it to all 10's and let the ecu be normal before trying to figure out what it is.

if you smell literal gas then you need to check the injector o' rings and fuel lines for fuel puddling and dont drive it. i think its a leak somewhere its jsut hard to say without seeing it.

im trying to think of anything it can be but its kinda hard to follow in the thread lol
 
He's got SSAFC...

terbow said:
14.7 is stoich anything higher is lean anything lower is rich.

if u are idling at 16-18 you most likely have an exhaust leak (assuming everything else is ok). this can be from the exhaust manifold all the way to the 2nd exhaust 02 sensor. i know it sounds weird but i had a leak in my s and j pipe and it did the same thing. i would assume the smell your smelling is exhaust bypassing the cats. if you had a boost leak or vac leak your boost gauge would read less than 20in hg.

You should be around 14.3-15.1 bouncing around 14.7 on a msp ecu. if you have an afc or anything like that i would put it to all 10's and let the ecu be normal before trying to figure out what it is.

if you smell literal gas then you need to check the injector o' rings and fuel lines for fuel puddling and dont drive it. i think its a leak somewhere its jsut hard to say without seeing it.

im trying to think of anything it can be but its kinda hard to follow in the thread lol
Click to expand...
 
hmm yeah so its gotta be a combination of both exhaust leak and vac leak, cuase i got the corksport downpipes and theres no gasket inbetween them, appearantly cs says you dont need one ;) so that could be one problem but the vac of 6 at idle, and 16 while cruizing(no gas) baffles me
 
Last edited:
speed5hornet said:
hmm yeah so its gotta be a combination of both exhaust leak and vac leak, cuase i got the corksport downpipes and theres no gasket inbetween them, appearantly cs says you dont need one ;) so that could be one problem but the vac of 6 at idle, and 16 while cruizing(no gas) baffles me
Click to expand...

put a stock one in there you definately need one. 6 vac at idle is horrible. if you smell gas, check your orings on the injectors and possibly the fuel regulator since it has a vac source.
 
its that black piece that is mounted on the top of the passenger side of the fuel rail with two 10mm bolts...just undo the bolts and it slides right out, but have a rag ready to soak up the fuel that will inevitably come out (it won't spray out, just leak out) and be sure to repressurize the system before you start it up

either by:
1. putting your key to acc (and shutting off all your interior electronics so you don't kill your battery) and leaving it there for a good 20 minutes

or

2. unplugging the two coils and trying to turn over the engine for a short amount of time

the first is better obviously, but the second works fine as well
 
promising news!

i believe that my ecu got its mind completly jacked up when the IM was installed cause wagonbacker n i reset mine yesterday and i believe its actually learning a little bit about what happened to it. The a/f rations are alittle bit richer now, i watched them like a hawk today and when i first start the car(cold start) they are perfectly at 14.7 and the car is idling smotthing and purring like a kitten...once it warms up though they lean out to 16-18 and the idle goes to hades. I mean i know its supposed to be a lil rougher but while studying the a/f ration the idle gets really bad when the a/f ratios dip to 18...so obviously the tune needs a little bit of work, and im assuming more fuel at idel and lower rpms/speeds will help a ton with the almost "misfire" sounding and feeling idle. Now the only thing that still is a mystery is the vac, im gonna put the gasket in the s/jpipe and probably have my mechanic buddy see if he can find any other traces of vac leaks.
 
did you check your egr?

this issue sounds exactally like what I had before and it was the egr tube.....the damn thing always seems to get stuck and thus crossthreaded and so when you put it back on it doesn't always seal right...can you wiggle the tube and it has play in it at all?
 
haha no problem

another update!
you gonna love this one
yeah so i was on my way to a friends house...and my breaks all of a sudden dont work...yeah like as in i cant push the break pedal in!!! This only happened once though (thankfully cause i had to go right through a red light honking my horn like a crazy person cause i couldnt stop!!! :eek:) I called a mechanic friend and he said that there could obviously then be a problem with the brake booster vac line, its not tapped into or anything but tomorrrow he and i are gonna take look at that....very intersting that it only happened once but in a way it would kinda make sense with the vac issue...
but like i said before, car seems a little better a/f ratio wise. So i have a question, can the ssafc change the a/f at idle??? Ive heard yes and now, if it can then ill reeally be sitting pretty a/f wise
 
anything you put in line between the ecu and its sensors can affect it.

so in short, yes absolutely it can affect at idle. even if the unit isnt programmed to do so, its an electrical resistance on the wire when its installed in between.

speed5hornet said:
haha no problem

another update!
you gonna love this one
yeah so i was on my way to a friends house...and my breaks all of a sudden dont work...yeah like as in i cant push the break pedal in!!! This only happened once though (thankfully cause i had to go right through a red light honking my horn like a crazy person cause i couldnt stop!!! :eek:) I called a mechanic friend and he said that there could obviously then be a problem with the brake booster vac line, its not tapped into or anything but tomorrrow he and i are gonna take look at that....very intersting that it only happened once but in a way it would kinda make sense with the vac issue...
but like i said before, car seems a little better a/f ratio wise. So i have a question, can the ssafc change the a/f at idle??? Ive heard yes and now, if it can then ill reeally be sitting pretty a/f wise
Click to expand...
 
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