throttle problem or something

[Scarrell]

not sure if you guys will be able to read this without being a member but we will see:

http://www.s10forum.com/forum/f107/thottle-problem-305502/

please let me know what you guys think, i need to get this fixed asap!:help: :angry :banghead

[MobileAudio219]

IAC valve

DUH!!!!!!!!!!!!!!!!!!!!!!!!!!:happy055:

[Scarrell]

i am not mechanically inclined, where is it? what is it? etc.. pics?

[MobileAudio219]

Go to http://www.s10forum.com

Search IAC valve, I believe theres a "how too" with pictures showing where it is, what it does, and how to clean it...

Theres alot of things it could be, but theres a good chance it could be a bad/dirty IAC valve.

Thats the one thing I really hated about the the newer s10s, they always had the gay issues with the fuel and air metering system...

I could also be your mass air meter, you can unplug that and see if it makes a difference...

[cargodz]

Definately sounds like a mass air flow sensor problem...
You see if it's messed up, then it will send a bunch of strange signals to the ecu which will in turn make the idle do a bunch of goofy chit... check and make sure it's clean as a first.

[Scarrell]

it Could be that, but i got a "new" one from an 00 Malibu, and it ran fine after that.. although it is possible it went bad.. ill put my old one back on and see what happens..

[breakjunki]

I went though all this a while back, I got the same problems, same answers, mass air flow, throotle position sensor, o2 sensor, iac, I prob spent $500 switching out sensors. It ended up being the seals around the injectors were leaking. Not that your problems isn't one of the above. But sometimes it ends up cheaper to just figure out what it actually is...good luck man, I hate car problems....:thumbsup

[brent]

Do like I said in a previous post. If the IAC switch doesn't help, take a can of carb cleaner and spray all around your intake, TBI, and any other vacuum systems. With you mentioning the difference you felt by applying pressure to the brakes, it makes me think it is a vacuum leak. The brakes, although hydraulic, operate through the vehicles vacuum pull.

[Scarrell]

actually last night i took the iac out and cleaned it, and opened the throttle and cleaned it with carb cleaner... some people are saying just to take out that butterfly piece.. also.. this may be normal but i never payed any attention to it before, but it sounds like my truck is trying to suck in more air than before.. but it may be my fan or something, im not sure..

[brent]

Did it sound lke that when the breather was off, or does it sound like that always since the idle prob? If it always sounds that way, then yeah, that noise is a vacuum leak, otherwise it should sound like that with the breather off. Use that carb cleaner to spray along your intake, tbi plate, and anything else vacuum related. If the engine bogs down, then you have found the problem.

[Scarrell]

with the breather off, my truck starts for a second and dies.. while it is running for that second, it makes a major sucking noise...

[Scarrell]

MAJOR UPDATE.. ok i went to Autozone and had them put their diagnostics tool on it.. before no ones machine would read because my ECU harness got ate up by my tire rubbing it.. so i had put all the wires back together and it ran like a dream.. well it read this time and i got ALOT of codes.. long story short, it may be my wiring again, but here are the codes:
--------------------------
here are the codes and the definition it gives with it:

P0758:
tranny stuck in 4th
2-3 shift solenoid valve performance
shift solenoid malfunction
2-3 shift solenoid (ss) fault
shift solenoid b electrical malfuction ssvsl2
shift solenoid b malfunction
shift solenoid b malfunction fault
shift solenoid b circuit fault
shift solenoid 2 circuit condition
-----------------------------------------

P1406:
heated catalyst internal control module
EGR
EGR valvle pintle position circuit
EGR temp. sensor signal range performance
DPFE sensor downstream hose off or plugged
------------------------------------------

P1806:
ICC solenoid valve circuit fault
ICC PWM solenoid electrical/circuit fault
---------------------------------------

P1864:
TCC enable solenoid electrical fault
DATA bus powertrain missing message, from adr control module
------------------------------------------------------------

P1886:
automatic transaxle concern
3-2 shift solenoid valve assembly circuit electrical fault
----------------------------------------------------

P0102:
MAP/MAF
---------

P0340:
cam sensor condition
--------------------

P0753:
shift solenoid 1 performance condition
3-4 shift solenoid relay condition
shift solenoid A electrical

then it says " the pcm has detected a short to ground, a short to battery, or an open air circuit condition in the electrical circuit for the shift solenoid "
--------------------------------------------------------------------------

P0122:
"the pcm has determined that the input from the throttle position sensor is lower than the expected current engine operating conditions"

tp sensor
---------------




ok. so.. as i said.. its very possible its the wiring again.. i thought i secured all the wires, but maybe not.. so im about to go tackle that!

[cargodz]

It will die without the breather hooked up to the throttlebody, cause no air is passing over the MAF... It's tryin to suck the extra air since it isn't sensing any and will die, because it thinks it's running to rich.

[Scarrell]

as i suspected.. wiring problem... there was a wire cut in half.. put it back together, drove fine.. went to Autozone and it read no codes and said "pass"

[breakjunki]

nice antoher prob down:thumbsup

[Scarrell]

actually.. the ECU wiring is the problem period.. the truck is running fine now.. i need to find a junk s-10 or something and get the ecu harness and crap from it..

[brent]

Nice, glad to hear it was fixed Scarrell

[cargodz]

actually.. the ECU wiring is the problem period.. the truck is running fine now.. i need to find a junk s-10 or something and get the ecu harness and crap from it..
That should be relatively easy with the millions of S-10s out there... check http://car-part.com/

[Bwcad1]

Blazers Work 2