Help! I'm being a douche about my Supra!

SupraDerk

The Backseat Flyer
Sep 17, 2005
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Tallahassee
On the wiring diagram the ECU only shows one "E2"...but the AFM and TPS both share a node that goes into this port. So he probably was checking the impedance at the TPS and AFM.

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Edit: A little FYI

E2 = Sensor Ground
VC = AFM and TPS
VS = AFM
 
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Hobbes992

New Member
Jan 25, 2006
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Tampa, Florida
I changed my spark plugs and valve cover gasket today and I was having the same rough idling and dying symptoms, turned out to be a vaccuum leak... a VERY small one at that. So put your head to the engine and listen to it for the brief moments it starts before it dies and listen for the whiiiisssssssssss. :) But then again if it's an electrical component failure then I guess you'll just have to replace the parts.

The original owner of my car ghetto rigged a lot of the vaccum lines and when I was taking off my y-pipe, I must have undid his ghetto rigging.
 

Hobbes992

New Member
Jan 25, 2006
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Tampa, Florida
Oh yeah, mine didn't start once because of gas. That was just reckless on my part because even though I knew my fuel gauge wasn't functioning I drove it around and still forgot to keep the extra jug of gas in my car, which I actually bought for situations where I might ran out of gas lol.

Or maybe you're fuel filter is so clogged that you're not getting enough fuel. I've heard about people getting shitty fuel with actual pieces of debris in it from average gas stations. These lawnmower guys came into the az I work at and they showed me the fuel filter to their lawnmowers that they just filled with gas from a mobil and it was filled with shit. They told me they were even going to be compensated for the damages the fuel did to the motors. But yeah, as to the vaccum lines, that includes the pcv connector things because if they aren't holding at the either the valve covers or the intake you could have a vaccuum leak for your intake charge. Mine were hard as rocks. They literally chipped when I pulled them off. :icon_evil

Just my suggestions, I know you said vaccum is fine but if you can't get it running long enough, how can you check for sounds? So replace those old shitty hoses!
 

Jervis Mcstabby

Puddin Pops!
Jun 21, 2006
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Where Indeed, CA
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Alright, I replaced the rotor, it had a circular divot in it, then I took apart the afm and cleaned out the connections and resoldered them. I also cleaned the connections on the spark plug wires and the ignition coil. I secured the Bvsv hose with a zip tie to make sure it didn't go anywhere. So far it's running well and timing is perfect. :icon_bigg
 

JustAnotherVictim

Supramania Contributor
^SWEEETT!!! A technical explanation :D^
Just curious though, because when I had an N/a the AFM was unplugged when I went to start it one time and it started up and died very quickly. So what I'm assuming you're saying is if the connection isn't made it won't start but if it is and the AFM is just bad it will start fine.
 

Jervis Mcstabby

Puddin Pops!
Jun 21, 2006
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Where Indeed, CA
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jetjock said:
It turns over more than one revolution while cranking doesn't it? All you need to do is verify timing ie, spark at the correct moment. For a no start condition other timing is not important. There are several ways to do this, not the least of which is a timing light. Works just as well during cranking as when running. Think about it. After all, a no start conditon is a very common problem in the automotive world. Ask any good mechanic and he'll tell you several ways to do it. See below for a few of the tricks I use.
:icon_bigg Thanks that clears up that idea a good bit. I think the main problems for mine were that :
1. The inner contact area on the rotor was worn and had a circle divot in it.
2. The main terminal connection between the igniter coil and wire was pretty dirty.

I had these symptoms once before I switched the distibutor cap, and all I did to fix it then was clean the cap terminals. Don't know why I didn't think to check under the cap.
Funny thing, jetjock, after you commented about blaming the car, I was gonna change the thread title to "Help! I'm being a douche about my Supra!", but I can't ,so oh well!:biglaugh:

Well thank you and everyone else for giving me ideas, I'll remember (most of) them!:runaway: