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Guest Message by DevFuse
 

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new to me 93 leg wagon running issues


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11 replies to this topic

#1 hush777

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Posted 13 June 2014 - 10:39 PM

Just gave the guy money and grabbed the title for the moment.

Took it for a short test drive.

idles crappy like hitting on only one cyl. Give it a bit of gas and after a few seconds it jumps to about 3 grand.

Seems to like anything above 2k but goes back to the one cyl hit below that.

Want to just drive this home.

Any suggestions of what to check to get it running a little better?

Need to drive about 65 miles to get it homw.

 

Thanks

Hush



#2 1 Lucky Texan

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Posted 13 June 2014 - 11:40 PM

IAC air tube under the intake might be loose (guessing a 93 has something like that?)

 

crank/cam timing could be slipped

 

dirty/gummed-up throttle body



#3 heartless

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Posted 14 June 2014 - 06:51 AM

dirty, gummy, IAC /throttle body

Bad plugs

Bad wires

Possible timing is off a tooth or two.

 

there are a multitude of things that can cause bad idle - none are overly difficult, or expensive, to fix - just a little time consuming.

 

Would start with a complete "tuneup" - Basic NGK plugs, NGK wires, air & fuel filters and see where that gets you.



#4 turboguzzi

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Posted 15 June 2014 - 10:50 AM

IAC air tube under the intake might be loose (guessing a 93 has something like that?)

 

crank/cam timing could be slipped

 

dirty/gummed-up throttle body

+1, dislogged it once while working, thought engine was toast.... rather fat rubber hose should attach to a stub in the manifold casting.



#5 hush777

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Posted 16 June 2014 - 09:22 PM

Gonna take an extra Iac and some hose that I have with me.

And some sealer and brake cleaner.

Will grab some plugs and wires in town.

 

Thanks

Hush



#6 grossgary

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Posted 17 June 2014 - 05:30 AM

i'd take an OBD code reader with me.  i have a cheap ebay special one that i don't mind throwing around, letting people borrow, taking on trips, keeping in my work bag to help people out.



#7 heartless

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Posted 17 June 2014 - 06:33 AM

93 is still OBDI...code reader wouldnt do him much good...

 

Gonna have to go old school to read any CEL codes on this one...

 

http://legacycentral...ature/codes.htm



#8 johnceggleston

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Posted 17 June 2014 - 11:27 AM

NGK plugs and wires first.

cheap and easy and they can't hurt.

until you do them you are just guessing .

 

then re-assess.



#9 hush777

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Posted 17 June 2014 - 08:56 PM

Got it home fine.

Runs better after it warms up.

Will start with plugs and wires and work my way out from there.

 

Thanks

Hush



#10 hush777

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Posted 20 June 2014 - 12:13 AM

Son sprayed card cleaner at the base of the intake on the driver side and idle picked right up.

So need to have jason send me a set of gaskets.

 

Hush



#11 BB's93LegacyL

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Posted 20 June 2014 - 07:54 PM

When mine had these symptoms, it was an intake manifold gasket. Mine is also a '93 Legacy wagon. This happened at about 100K miles when the car was about 17 yrs old.



#12 88coupe

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Posted 24 June 2014 - 07:42 AM

A little bit ago bought a 93 legacy wagon & it ran like SH!T when 1st started each day. Only reasons we went ahead and got it was the price, pretty cheap for the condition it was in (besides driving performance) & it would clear up and run pretty good once warmed up. After multiple threads & posts I tracked down a few issues that caused its lacking performance. 1ST was timing, it was off 2-3 teeth. I couldnt believe that because it ran so good when it warmed up. 2ND previous owner had those Bosch 4 tip platinum plugs in it, immediately in went NGK's, it helped. 3RD Coolant temp sensor was shot, idled at 2000-3000+ rpm's for a while at first start of the day. Not any more. BTW the EASIEST way to tell if the coolant temp sensor is crap is to just turn key to "ON" pos. and if your fans start or stay running NON-STOP its shot. Granted fans will run if the car has been drivin recently & is stil hot/warm but if they dont stop after 30min then its toast. 4TH cleaned throttle body/IAC valve/PVC/MAF. There's a few things to look into if its running shitty & keeping a high idle. 


Edited by 88coupe, 24 June 2014 - 07:42 AM.





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