NEED HELP BH5 SINGLE TURBO

[gtb]

Hey just converted my bh5 1999 legacy to single turbo

Won't let me boost has sometimes a ruff idle have checked for air leaks and fuel pressure spark plugs was put on an analyzer computer it said it was the air flow temp sensor so I replaced air flow meter but still the analyzer reads the air temp to be like 205 degrees or somthing wen the engine reads 37 degrees wen I start it any ideas my next step is coils but sometimes the car just won't start and wen it does pops and farts then then goes again didn't think coils would give simp dims like that

[lachlan]

Lol simp

Dims . Took me a while .

If it reads 207 etc then its likely open circuit or wiring fkd or not connected etc .

Unplug at sensor end and check continuity back to ecu plug for the wires concerned

[gtb]

Cheers will check tomorrow it's giving all the (symptoms) lol as a faulty airflow meter I pulled the plug off it today to see if it would stall and it did I also had an old fuked meter I put that on to see if it would run worse and it did also bring up check engine light so went all out bort a new one engine light went out but still not good very confusing

[gtb]

There was no open circuit was all swt anything g else??

[Marky]

Ok so it says air temp sensor is the problem

You replaced it and it's still the problem

Weird, must be wiring

Is this a problem which started after you fiddled with it, or is it something which has just happened out of nowhere

[gtb]

It ran swt for about a day then started to play up I keep putting it on the analyzer every day keeps bringing a different code up today was o2 sensor the computer I'm running was a bit corroded so I just replaced it today made no difference just has a Lil up and dwn idle and won't let me get much boost before it starts popping and farting day before yesterday the analyzer said map sensor was playing up so I got another one of those. I can smell it running real rich just changed the plugs before witch I already changed bout a week ago and they were fowed up I keep looking for air leaks can't find nothing I would think it was the coil playing up wen it comes on boost but the funny idle rich smell hmmmm

[Marky]

What do you mean it ran sweet for a day

What exactly have you done to it, at the moment I could list a dozen maybes

[Roscoeb4]

hi i have put a 2000 STi Forester intake and 3plug ecu in my 1999 b4 legacy and i running a TDO5 single turbo, and all v2 wrx sti gearbox and diff but after about 20min has a fuel cut surge and then engine cel comes on then it dnt go ova 4500rp like it has a governor , then the cel gose out then its back boostin hared again ,the fal code is 45 , any help

[Rosssub]

 Roscoeb4 said:

hi i have put a 2000 STi Forester intake and 3plug ecu in my 1999 b4 legacy and i running a TDO5 single turbo, and all v2 wrx sti gearbox and diff but after about 20min has a fuel cut surge and then engine cel comes on then it dnt go ova 4500rp like it has a governor , then the cel gose out then its back boostin hared again ,the fal code is 45 , any help

45 covers the MAP sensor and the atmospheric pressure change solenoid.

Are you still using the BBOD?

[Roscoeb4]

Hi nah i got all the forester bits

[Rosssub]

Sweet. So on the drivers strut tower should be:

Boost solenoid.

MAP sensor.

Atmospheric pressure change solenoid.

Are all 3 plugged in and plumbed up properly?

[Roscoeb4]

I think so im running a boost tap as well

[Roscoeb4]

The check engin light dos go out when i cruz then i slow right dwn and stop take off and then it will surg and do it again

[lachlan]

Talk properly or go back to facebook mechanic threads

[Rosssub]

 Rosssub']Sweet. So on the drivers strut tower should be:

Boost solenoid.

MAP sensor.

Atmospheric pressure change solenoid.

Are all 3 plugged in and plumbed up properly?

I think so im running a boost tap as well

Did you do the conversion wiring yourself? To use a forester solenoid/MAP/pressure change solenoid, you would need to modify/rewire the original BBOD loom, or the pressure change solenoid cant be plugged in.

[quote name='Guitar_Guy said:

Feeling a little hi-jacked here but ya know...

I'll move this to another thread tonight.

[Roscoeb4]

Yes i did .i done ecu reset and it was goin great .i drove it for about 100k on the open road had no falt or anything .then when i slowed down to about 50k and went to take off it did it again . Do you think its a vacuum leak.

[Rosssub]

Yip could be a boost leak somewhere, or a faulty AFM.

How much boost are you running?

[Roscoeb4]

I changed the AFM . Mite have to get it checked on a diagnostic computer

[Rosssub]

Sweet, more likely a boost leak or too much boost. What psi are you running?

To check for boost leaks. Either spray ether (starter fluid) or anything highly flammable around any possible vac/boost leak spots. If any fluid gets sucked in the idle rpm will change straight away.

Or block the intake off at the AFM end, then pump 10-15 psi into the intake manifold through a vac hose. The system should hold pressure perfectly. Any air/boost leaks will hiss and be obvious.

[Roscoeb4]

It was the o2 sensor changed that and its fine now thanks for the help cheers roscoe