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R32 Gtst Problem Child

beemae30

By beemae30,
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DVS JEZ Grand Master

DVS JEZ

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Could very well be the issue. Tty another one to see if it does the same or not.

With the TPS it should be .45v no throttle and should slowly rise to 4.5 - 5v at Wide Open Throttle. Make sure u are checking the correct pin on the TPS.

You say in ur post( 4 up) that its only whenits dead cold then once it starts it takes 7hrs. Can u explain this a bit more please

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beemae30 Proficient

beemae30

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It does it when its stone cold. Then it'll take around 7hrs or so to get cold enough after its hot to start doing it again. And i'm pretty sure its the IAC as the spring isn't even holding it closed normally. I tested it with 12v and nothing ... at all so i'm thinking when its cold the AAC struggles to flow enough to stop it running rich on cold start.

And there is only 2 wires on the tps, or am i supposed to earth one of them to test it?

Also were is this hose supposed to go, Its at the rear of the block beside the intake manifold.

IMG_0503.jpg

Edited by beemae30
beemae30 Proficient

beemae30

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Was bypassing which must have been enough to make an issue at cold start when it richens up. Through an oem worker on and straight away starts perfect. Better then when i first got it. Shitty gfb BOV's

  • 2 weeks later...
beemae30 Proficient

beemae30

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Looks like it but it is blocked with a bung. And the orientation of the hose puts it to the back of the fuel rail/inlet manifold as you can see by the bit of a hole above and left a bit to the nut.Also heater works fine :)

Edited by beemae30
  • 1 month later...
beemae30 Proficient

beemae30

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Issue has reared its ugly head up. So i thought id replace the Cold air idle controller which didn't work when i supplied voltage to it. Fitted a known working one and still has the same issue. Any ideas?

  • 4 weeks later...
beemae30 Proficient

beemae30

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Haha tell me about it. When the engine is stone cold when i start the engine the first 2-3 seconds it sputters and farts around 200-300 rpm. Occasionally it will stall out and need a re-start. If i jab the throttle after i've started it and while its sputtering it revs up then returns to a normal cold idle. Ive checked the tps and adjusted it to 0.45v idle and at max it only goes to 4v. Coolant sensor is 2k at cold and haven't had the chance to check it at operating temperature. Has a known working cold air valve and idle is set to 600rpm as per manual. Had it set to 900 but made no difference. Have cleaned the IAC and the AFM. Resoldered the AFM pins. Replaced the fuel filter and lines. Replaced all the vac hoses and boost hoses. Any ideas?

DVS JEZ Grand Master

DVS JEZ

Posted
Posted

Cold start issue can be a few things.

Let me know if it blows much smoke meaning its too rich.

How low is the idle on cold start?

Does the problem go away with a bit of throttle? Maybe the aac valve is buggered.

Have u set the base ignition timing? Might be out

beemae30 Proficient

beemae30

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No smoke,

When it starts it farts around 300 but once i have jabbed the throttle it goes to 1400-1500 at cold stand still.

And i've replaced the cold start valve ( one under the tb). I would think if it was the aac it would have an issue every start and struggle to idle? It idles sweet at 600 as per the manual and doesn't falter when a/c is switched on/off.

Yeah if i start it with the throttle a bit open it starts sweet.

And i haven't touched anything with timing and once the engine is warm it idles perfect, runs perfect. Only thing timing wise i can think of is that the cold compensation on the computer has changed.

Sarumatix Veteran

Sarumatix

Posted
Posted

your starting issues are fairly similar to my 32 gts-t which every cold start struggles to get up to idle. A short tap of the pedal usually gets it to idle perfectly so I have never bothered to track the fault down.

Did your random power cut out issues go away? I had exactly the same thing and it was definitely the AFM plug getting dry joints plus having an aftermarket BOV. I presume given you are getting TPS voltage you are using consult? if not give that a test and make sure it isn't throwing up any fault codes.

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