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Author
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Topic: smog problems
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bumbellbee
New Member
Member # 7746
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posted
 
 
hey yall I have a 89 lx with a cobra intake
possible cam dont know because the idle is a little chopy got the car as it is dont really know the history of the add on parts.
currently im trying to pass smog and the co% is at 10 I think it should be @ 14 any body have any suggestions. also the check engine light comes on and off and the modis scanner just says enging rpm un controllable at low rpm oh yea and i hooked up a vaccum gage and at idle its 15 lbs i think it should be at 20.
some was saying the cats coukd be hollow or perhapps cooked .
Posts: 4 | From: vallejo | Registered: Jun 2007
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Curt
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Member # 6254
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posted
fix your EGR system
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'90 GT
'94 Toyota 4wd "It have problem"
'56 F100 5.8 AFR185's Vortech SC S-trim
Posts: 866 | From: Monterey/Rocklin | Registered: Nov 2005
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bumbellbee
New Member
Member # 7746
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posted
I applied a vaccum pump to the egr asnd the engine stumbled where next should i check in the egr system ?
Posts: 4 | From: vallejo | Registered: Jun 2007
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90lxfoxbody
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Member # 6947
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posted
well if it has bad idle check for vac leaks.then check the idle motor.Make sure your tps is under 9 tenths of a volt after base idle is set.Also make sure the tps reads correctly from idle to wide open.should be .890 or so at idle to 4.5 to 4.7 at wide open.
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Owner Of All Out Performance
Ya I own that Cobra
Old setup whipple and jug 9.37 155
New twins hoping for 8.50s at 165
Posts: 588 | From: fresno ca | Registered: Jul 2006
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