WTF Idle

[A4ringedONE8T]

My throttle body has been jacked up since Waterfest, have to continually clean the throttle plate pivot points every couple weeks or I get an Idle control valve malfunction code and my idle rests at about 1300-1400 with the ESP light flashing. I just cleaned it again on Friday, at this point just buying time until I can do an intake manifold for the R32 TB I have. Well, over the weekend it started F'ing up again (usually goes a few weeks after cleaning). I tried doing a TB alignment this morning, now the idle surges from 1300-2600 back and forth every couple seconds. No ESP light flashing now and the only code thrown is this:

16891 - Idle control system RPM higher than expected
PO507 - 001 - Upper limit exceeded

Clearly still my throttle body (or I think) but WTF, anyone else ever seen or heard this shit?

For anyone else thats done a TB align, what were the results? Mine were 14.5% & 85.2%, are those correct?

Thanks!

Shawn

[CO AVANT]

Mine are ~83% after disconnecting battery or moving TB. After TB adaptation it goes to 87.1% at idle... I have extra TB parts if you need them.

[onceover]

i'd say look for vacuum leaks. i had a similar problem and it was my crankcase breather valve

[absolutegtr]

If you remember after I removed all those vacuum lines and check valves; I had HORRIBLE idle/misfiring problems, well it turned out to be a vacuum leak. Anyways, point is, my idle also was surging up to 2500 rpm.

I definetly say vacuum leak as well

[A4ringedONE8T]

Vac leak lol, you guys know I have the most simple vac system possible right And this isn't my first rodeo, come on guys!

Jordan if you have a spare TB, hit me up!

[Don Supreme]

Possible the water meth screwed it up?

[CO AVANT]

No I have spare parts not a complete TB... If you need any specific part on it to swap out and try then I prolly have it.... ie electrical etc.

[A4ringedONE8T]

Possible the water meth screwed it up?

Years of build up in the TB, yes thats the cause Im sure but regarding that I dont care, just want to make sure Im not forgetting anything before I spend $371 bucks on a new TB

[Condo]

I have a TB if you need it. I'm going with a custom intake manifold and R32 throttle body so I won't need the TB.

[A4ringedONE8T]

I have a TB if you need it. I'm going with a custom intake manifold and R32 throttle body so I won't need the TB.

How much? I have an R32 TB as well, just need to make a manifold for it but need something for the time being

[absolutegtr]

Vac leak lol, you guys know I have the most simple vac system possible right And this isn't my first rodeo, come on guys!

My vacuum setup is similar if not the same as yours, yet I had a vac leak. Just saying, dont forget the obvious!

[A4ringedONE8T]

My vacuum setup is similar if not the same as yours, yet I had a vac leak. Just saying, dont forget the obvious!

Ive already checked the obvious

[noring3.2t]

My throttle body has been jacked up since Waterfest, have to continually clean the throttle plate pivot points every couple weeks or I get an Idle control valve malfunction code and my idle rests at about 1300-1400 with the ESP light flashing. I just cleaned it again on Friday, at this point just buying time until I can do an intake manifold for the R32 TB I have. Well, over the weekend it started F'ing up again (usually goes a few weeks after cleaning). I tried doing a TB alignment this morning, now the idle surges from 1300-2600 back and forth every couple seconds. No ESP light flashing now and the only code thrown is this:

16891 - Idle control system RPM higher than expected
PO507 - 001 - Upper limit exceeded

Clearly still my throttle body (or I think) but WTF, anyone else ever seen or heard this shit?

For anyone else thats done a TB align, what were the results? Mine were 14.5% & 85.2%, are those correct?

Thanks!

Shawn

You should sell that car and get a wheel drive car. Like a R32 with a big ass turbo.

[A4ringedONE8T]

You should sell that car and get a wheel drive car. Like a R32 with a big ass turbo.

A wheel drive car? Shut up and eat your lunch! lol

[noring3.2t]

A wheel drive car? Shut up and eat your lunch! lol

you know what i meant fool.Lunch was great by the way.

[Condo]

How much? I have an R32 TB as well, just need to make a manifold for it but need something for the time being

PM sent.

[A4ringedONE8T]

PM sent.

Replied

[A4ringedONE8T]

Borrowed a TB from another 1.8T we have at the shop, is indeed the problem. Getting a new TB from John overnighted, should have it tomorrow and be good to go again!

Thanks guys!!

[B6Lovin]

guess you won't be needing mine then

and i felt important lol

[A4ringedONE8T]

guess you won't be needing mine then

and i felt important lol

Sorry, car isnt driveable with the busted one, needed one for sure and ASAP!

[msharifi]

i'd say look for vacuum leaks. i had a similar problem and it was my crankcase breather valve

I know this is a old post but how did you replace your crankcase breather valve?