2.8L M20 build - Now with 2.7L!

[UserError]

If there's fuel and spark, check for compression. That'd be step 1 in my book.

[acolella76]

compression is there

[acolella76]

Bump! I need help!

-Getting 3bar fuel at the fuel rail
-Getting 12v at the injectors
-Injectors are showing 14.7ohm resistance

-Sparking at the plugs
-Plugs, cap, rotor all clean and good

-Timed correctly

It will only start with the throttle wide open. What could this mean? Bad TPS, not getting enough air, getting too much fuel... ?

[Wanganstyle]

what CEL's do you have?

[acolella76]

what CEL's do you have?

None, it is throwing no codes!

Also, forgot to mention this, but with the intake boot and everything off it will actually run. Of course I have to hold the throttle open cause of all the unmetered air, but it doesn't need the starter to be engaged. Even still... it has to be WOT just to start. Doesn't really make sense to me.

[Bmwman92]

The problem your having sounds like mine have to hold the gas to start but mine will idle fine just no response from the pedal

[tinkwithanr]

bad idle air control valve...

[ForcedFirebird]

bad idle air control valve...

Highly likely.

Turn the key on and hold the IAC, is it "buzzing"?

Mine just went out on me on Friday, had to use the throttle cable to hang it open a bit for my car to run until the new one gets here. Sucks, I have about 5-6 straight IAC's on the shelf and my boot requires the 90* IAC, FTL.

[Bmwman92]

Highly likely.

Turn the key on and hold the IAC, is it "buzzing"?

Mine just went out on me on Friday, had to use the throttle cable to hang it open a bit for my car to run until the new one gets here. Sucks, I have about 5-6 straight IAC's on the shelf and my boot requires the 90* IAC, FTL.

If your referring to me the icv is working. if you have any ideas my thread is here.

http://www.r3vlimited.com/board/showthread.php?t=245708

sorry im not trying to thread jack

but yeah id check your idle control valve, tps, and if you have one your cold start injector.

[acolella76]

It buzzes when it's on and the little toy inside moves freely, so it's definitely working!

I am thinking about trying out another ECU, and if that doesn't work I will probably give up and take it to a shop.

[Wanganstyle]

perhaps there is a vacuum leak on the bizzach tube, intake manifold or TB?

[dinanm3atl]

Did we try the TPS? Like it is not reading unless floored?

[ForcedFirebird]

Did we try the TPS? Like it is not reading unless floored?

this reminds me, Alex. You have an Ostrich and can monitor all of the engine's sensors to make sure they are all working properly...

[acolella76]

perhaps there is a vacuum leak on the bizzach tube, intake manifold or TB?

I know the bitch tube is sealing well...as is the TB and intake. I think it would have to be a pretty big vacuum leak to do this though!

Did we try the TPS? Like it is not reading unless floored?

Code reader didn't show any codes for the TPS. I floored your mom.

this reminds me, Alex. You have an Ostrich and can monitor all of the engine's sensors to make sure they are all working properly...

Oh? I didn't know I was able to do that. I used a code reader to see if I have any codes, so I'm not sure if the Ostrich will be able to show much more?

[ForcedFirebird]

Ostrich won't tell you codes, but if you data trace you can see if the AFM, TPS, CTS etc are all working like they should.