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Stagea S2 Stumbling No Idle No Vac/boost Etc

godzilla_753

By godzilla_753,
in Four Door Family & Wagoneers

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godzilla_753 Contributor

godzilla_753

Posted
Posted

been working on a the engine trying to get it wired up correctly. I have got it started now and it seems like it doesn't want to run right.

Problems:

very low idle, almost dies

gauge is showing little/no vacuum (this might have to do with my homemade vacuum block)

running super rich

doesnt want to rev up

When I unplug the maf it runs much better, idle raises up and it revs much more smoothly but stops at 2500 rpm like it should. As soon as i plug the maf back in it drops down again to 300 rpm or so and wants to die again.

I was thinking maybe the maf wiring or maf itself are bad?

what would cause it to want to die and not idle?

godzilla_753 Contributor

godzilla_753

Posted
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Posted

Haha I am actually located in Texas, in the US.

I went out and tested the voltages that the TPS is sending back to the computer and its something like 3v at close and almost 8 at full throttle. this is with the car on and engine running. I tried adjusting the tps down but I only got it to send at a minimum of 2.6v at close throttle.

Isnt the tps supposed to see 12v on the + wire?

pipster11 Grand Master

pipster11

Posted
Posted

throttle shut the tps should read .44V but i'm not sure which wires that is across

a good idea would be to grab either a consult cable or an ecutalk display and hook it up to a pc and see whats going on

www.ecutalk.com does the cables and the display (display is soooooo handy)

take a pic of the vac system and post it up, it will give us a good idea of whats going on

QWK32 Veteran

QWK32

Posted
Posted

we told you in your other thread that the TPS see's 5v and you haven't taken any notice. no wonder your getting ridiculously high TPS readings. you'll be lucky if you haven't done any damage to the rest of the sensors that are designed to receive a 5v supply.

FYI, anything above 2.5v on the TPS at low load i.e idle, makes the ECU think you have your foot planted so it starts dumping in shit loads of fuel, this is all in preparation for hard acceleration and wont cause an issue if you do just that. because your not accelerating its just running mega rich at idle. to give you an idea of the fuel enrichment, your basically going from a normal idle injectors pulsewidth of about 3m/s to one of about 20m/s.

oh and just incase you still don't believe it

post-34711-0-16742300-1292915871_thumb.jpg

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