Low and surging idle

Started by Chaapppppp, Nov 14 2018 08:07 PM

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7 replies to this topic

#1 Chaapppppp

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Posted 14 November 2018 - 08:07 PM

Hi,i have a '97 rs legacy twin turbo.
Idle is very low and surges, sometimes car stalls when stopped.

I have:

Cleaned iacv
Cleaned throttle plate/intake
Reset ecu by disconnecting battery

Anyone have any suggestions?

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#2 El_Freddo

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Posted 14 November 2018 - 10:11 PM

Got any codes?

Also cleaning the contact points on the throttle position sensor could be worth the effort. Then re-adjust the tps’s setting following the workshop manual.

Thermo fans on all the time? If so, temp sensor is dead

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Bennie

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#3 Chaapppppp

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Posted 15 November 2018 - 03:04 PM

No codes, however i disconnected maf sensor while car was running and it didn't die🤔
Does this mean maf is bad?
Thermo fans are all good.
Thanks

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#4 podmak

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Posted 22 November 2018 - 08:53 PM

You guys have a workshop manual for gen2 twin turbo? Would you share please?

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#5 Chaapppppp

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Posted 24 November 2018 - 06:54 AM

Not the maf, only have a haynes hard copy i bought from super cheap auto bro.

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#6 Ads

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Posted 24 November 2018 - 07:39 AM

Checked plugs? I had the same symptoms intermittently up to the point where it wouldn't even start. Turned out to be fuel fouled plugs from running rich, possibly due to an injector issue (stuck or clogged). Surprised you are not getting any codes though..