Egr valve malfunction wont go away
10-14-10, 06:17 PM
#1
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Egr valve malfunction wont go away
Hi i've got an sc300 95 with 158k miles on it,engine light comes on so i check it out and i get code 71 EGR MALFUNCTION so i took it out and it was cloged up so i cleand it.
I intall it back on and i drive for about 30 mile darn engine light on again and egr valve malfuction.
So i get another egr valve from a running car with no problems the guy sold it o me for 5bucks cuz his car got wreck so anyways i install it and drive about 30 miles again and guess what the engine light comes on again egr valve mulfunction.
so i checked the connections and it fine i checked the cable that hooks up the the egr valve from the engine harnes with a test light and i get nothing what should i do next?does anyone have a diafram for this car?
I intall it back on and i drive for about 30 mile darn engine light on again and egr valve malfuction.
So i get another egr valve from a running car with no problems the guy sold it o me for 5bucks cuz his car got wreck so anyways i install it and drive about 30 miles again and guess what the engine light comes on again egr valve mulfunction.
so i checked the connections and it fine i checked the cable that hooks up the the egr valve from the engine harnes with a test light and i get nothing what should i do next?does anyone have a diafram for this car?
10-14-10, 10:17 PM
#6
Had the car for 2 years now and have had my check engine light on this whole time for the EGR valve. Doesn't bother me anymore. I don't even notice it driving now. And honestly if something else goes wrong with my car I will notice it believe me....I won't need the check engine light to tell me.
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10-15-10, 06:22 AM
#8
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can the vaccum modulator be cleaned?
thanks scviolence
the engine light doesn't bother me much either but iam planing on selling the car so just would like to fix that issue.
thanks scviolence
the engine light doesn't bother me much either but iam planing on selling the car so just would like to fix that issue.
10-19-10, 07:30 PM
#12
You don't see EGR valves on newer cars because variable valve timing technology actually works to keep some exhaust gases in the combustion chamber and help emissions. It works for a daily commuter car standpoint, but from a performance standpoint it sucks ***.
I would put money on the vacuum modulator as the prob.
10-19-10, 10:32 PM
#13
it's a ****ty system, but it works to reduce emisions on cars. you'd be surprised how much i saw NOx levels drop when the EGR kicked on (saw it while working with a gas analyzer).
You don't see EGR valves on newer cars because variable valve timing technology actually works to keep some exhaust gases in the combustion chamber and help emissions. It works for a daily commuter car standpoint, but from a performance standpoint it sucks ***.
I would put money on the vacuum modulator as the prob.
You don't see EGR valves on newer cars because variable valve timing technology actually works to keep some exhaust gases in the combustion chamber and help emissions. It works for a daily commuter car standpoint, but from a performance standpoint it sucks ***.
I would put money on the vacuum modulator as the prob.
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