I have codes.
24 and 51.

I can not seem to locate these in my tsrm so I'm going to try an online link.

But if anyone knows and can save me some steps.

I would be highly appreciative.

i was getting those codes when i had faulty vsv switches
one switch controls fuel vacuum
one controls egr vacuum
you can test them easily but they are hard to get at to test

they are brown plastic dealios under the intake

you need an air/fuel meter long term to keep an eye on the mix

Alright.

Code 24 is the air intake signal.
Open or short circuit in intake air temp sensor signal tha.

Code 51 HAs to do with alot of ac schmaz which I have long sense deleted. So that brings us to the TPS circuit or the TPS.

This is about as good as i get guys. Code 24 sounds like I need a new afm and a new dry flow filter. YES or NO ???

Code 51 can be there simply because I have deleted the ac unit or I have a problem with my tps. Which may as well be in sputnik.

my guess would be the fuel one is not working and you're getting more than the usual amount of air in the mix

so fella's would this raise your idle ?

you betcha it's just like turning the air screw on the throttle body

i guess it could be the egr one what do i know

it's an easy continuity test

my diag is alot cheaper than yours

vsv switches are $50 each from the dealer

Well my afm is under warranty. So I'll replace it and get a new filter for starters. Not to be rude. It's just been a long night and I'm about to rack out. I'll read this again later when I'm more coherent.

EDIT: I'm getting fuel. No problem there the walbro is kicking a$$ and taking names.
If anything I'm running rich and need a fuel pressure regulater. But I don't know at this point.

I'll have to think more on this later.

Thanks for the input.

Code 51 is *usually* from opening the IDL switch while in diagnostic mode. in other words don't step on the gas while checking codes or adjusting timing and you won't get it.


The code 24 you've been chasing for a while and I know you've already replaced the AFM once. Test the THA and (as I've said before) if it tests to spec the issue is either in the ECU (which I think you said you've also tried swapping) or it's an issue with the wiring harness (this one gets my vote).


EDIT: You know, I keep forgetting that you mentioned a high idle. Have you tested the ECU's coolant temp sensor yet?

I go to work, come home and now you have codes....LOL

Well I guess you found your problems.

As far as your codes, come on, you have a TSRM right? Now show us how good of a mechanic you REALLY are. It shows you WHAT to check when you get those codes. Don't just go throwing parts at it.

I would convert back to the stock air box and paper filter. Seriously.

That's my next stop. New dry flow filter and a new reman'd afm.

CRE..., Ya I may have tweaked the idle once while it was running codes.

I'll disconnect the neg terminal and hope that clears it out. The 51 isn't bothering me.

My car had blowby before I did the build and I'm about to change all of that.

I was throwing a code 31 but I'm not now.

And hell you're telling me I work all night to turn it on and find codes.
Dear Lord.

Well...., after removing the AFM.

I at minimum know it had to be done because it was contaminated from my old air filter.

It stank of fuel. The plastic intake pipe didn't smell nearly as strongly as the afm did.

I am taking in more air. I am in the middle of building my own c.a.i., My injectors should be max'd out with the walbro behind them. So the influx of air shouldn't be a bad thing.

I also ported and polished the complete air intake plenums inside and out with a pencil grinder. Now before you go telling me I'm daft. I have prior experience in just this thing with jet air craft engines. So I'm not just thumb dicking around.

I should have the new afm right around noon and the air filter as well.

The battery is un hooked. The jumper wire is in place. I won't fock with the gas peddle this time around and we'll check for codes and try to get it timed and tested by early afternoon tomorrow.

Thanks for reading.