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Guest Message by DevFuse
 

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Turbo EA82 idle spastic when cold


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4 replies to this topic

#1 moosens

moosens

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Posted 09 January 2004 - 12:11 AM

'87 EA82T.My local Subaru senior master tech says it could be a grounding issue.Any thoughts?

Idle stays steady upon starting but once you kick it down it wants to jump from about 1500 to 2500 PRM.

After driving around,and then shutting the car off it'll act perfectly.At that point it'll idle at around 1100 or 1000.

My gas mileage blows bigtime.SPFI gets around 30mpg and the turbo gets more like 20mpg.....bogus dude!

Possibly related to grounding(?) is the fact that my radio when on AM has heavy interference when cold/just starting up.Later on it'll sound fine.
Thanks for any help.Cheers!

#2 calebz

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    Andys Coupe killed my cat

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Posted 09 January 2004 - 01:22 AM

First off, Turbo gas mileage sucks. I average about 20-22mpg in mine.. most of the reason being that people with turbos tend to use them.. every time that turbo spools up, your gas gauge goes down...

Second. Grounding. I have run into a few weird problems with grounding on my turbowagons. everything from odd operational problems to funky digidash readings. My solution has been to run 3-4 extra grounds from the battery to the engine and body. You can never have too many grounds.

Third, funky cold Idle. I would start with the most likely culprits, which in my mind would be the coolant temp sensor, located on the passenger side to the rear of the TB, and even a more likely culprit, a malfunctioning aux air valve. I would give more specific info about it, but, even thoug I know what I am talking about, it always comes out wrong. I'm sure SuperSkip will chime in shortly to expound upon or disprove my theories. :)

#3 Skip

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Posted 09 January 2004 - 06:40 AM

Chiming - As it would be bodaciously bogus to disagree with anything Caleb, the SUBARU MASTER, says
(I don't understand why he uses a butcher for an avatar though? self proclamation? ;^)
I would like to point to some points for grounding on turbos that sometimes need attention.
1) Front drivers side core support (I clean and replace the phillips head with a standard 10mm head size bolt.)
2) Pass side front intake manifold bolt (dash to engine ground - a TSB was issued durring the time of production on this ground problem)

One small item the SUBARU MASTER did not address is this statement
"Idle stays steady upon starting but once you kick it down it "
Now whoa be it for me to suggest a sticking componet (throttle pedal pivot, cable or other related devise), as the master would surely have picked up on this if it needed mentioned.
To test if it's the AAV pinch the hose to it.

All in jest as I do not like the look of the cutlery he is wielding,
plus the fact,
one thin I dew knew fer sure is
"YA DON"T MESS WITH TEXAS!!"

SSout


#4 calebz

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Posted 09 January 2004 - 11:20 AM

D'OH.

As Skip pointed out, somthing may be sticking.. I have a tendancy to overlook the obvious on occasion.

Skip, someday grasshopper, you will be a master like me. But first you must learn to overlook the obvious. Only then will true mastery be achieved.;)

One final note.. Go ahead and mess with texas.. I am from Washington.. Here out of necessity.. I am hoping that when California falls into the ocean, mother nature will see fit to find a way to take Texas with it..:D

#5 moosens

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Posted 09 January 2004 - 12:27 PM

Thanks guys! I'll check things out soon.




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