Question about 1996 Geo Tracker 2 Door

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What are the symptoms of a bad egr valve ina 1994 geo tracker?

Could it stutter until completely warmed up when you first drive it.

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  • Anonymous Mar 16, 2014

    symptoms of bad egr valve

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This may help
EGR Theory. EGR serves one purpose and one purpose only. That purpose is to reduce Oxides of Nitrogen (NOx). Undernormal combustion, Nitrogen(N2)Oxygen (O2) in the air and Hydrocarbons (HC) in the fuel combind into water(H2O) Carbon dioxide (CO2) and the Nitrogen remains unchanged. Under very hot combustion temperatures, the Nitrogen reacts with the other two byproducts and forms Nitrogen oxide (NO). After being released into the atmosphere, it picks up another Oxygen and becomes Nitrogen dioxide (NO2). In the presence of sunlight,
it combines with other compounds like Hydrocarbons and forms Smog. Since exhaust gas is inert (very stable) it doesn’t burn again. So by being introduced into
the combustion chamber, it will lower combustion chamber temps enough so that
the Nitrogen doesn’t react with the other compounds and is passed unchanged out
the tailpipe thus not contributing to smog. Now, since exhaust gas doesn’t burn, it
doesn’t exactly help with combustion. At higher RPM’s, this really isn’t noticable,
but at idle, the reintroduction of exhaust gas will cause a very rough idle and can
cause stalling if to much is introduced into the combustion chamber

Posted on Mar 07, 2009

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1 Answer

Motor turn 3000 when it's cold, when it's warm he turns low at 1500 an than up again at 3000, again an again.


I've been trouble shooting this on my tracker as well and have got the problem solved for the most case. I had a loose vacuum line on the electrical valves on the left had side of the engine in the front looking from the front. I also replaced my head gasket and discovered the EGR system was completely stopped up in the intake manifold, exhaust manifold and the EGR valve. It has gotten better since then but still revs high at the beginning for about three seconds then comes back to normal and stays there. Hope this helps

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I have a 1996 geo tracker that the code reader says has an EGR valve problem. I have read about the cleaning the out the port? going to it. Is it possible or likely that this port? fouling is really the...


Had same problem and cleaning out port where the exhaust tube enters the intake solved the problem. This tube runs from near the EGR valve up to the intake. Two 10mm bolts on each end. Simple fix and cost is only time. 15min.

Nov 26, 2010 | 1996 Geo Tracker 2 Door

1 Answer

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1 Answer

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MY GEO TRACKER SHUT DOWN AFTER 3 MINUTE. I WAIT 5 MINUTE MORE TO TURN ON. AGAIN AGAIN & AGAIN. IT HAVE CURRENT IN SPARK PLUG. THE ONLY SYMPTOM IF GASOLINE STINK


motor is flooding.
press gas pedal to floor ,for secret unflood mode.

tune it up/
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this a 8valve motor ?
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Apr 04, 2009 | 1994 Geo Tracker

1 Answer

Egr valve location


The EGR Valve Location is typically housed on the intake manifold this schematic may help you
http://www.autozone.com/shopping/repairGuide.htm?pageId=0900c1528008822d

Mar 07, 2009 | 1996 Geo Tracker 2 Door

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