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I have a 1991 Dodge Grand Caravan, front wheel drive, 3.3....

<< Back to: rec.autos.makers.chrysler FAQ, Part 1/6

Question by bodyfat2
Submitted on 9/29/2005
Related FAQ: rec.autos.makers.chrysler FAQ, Part 1/6
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I have a 1991 Dodge Grand Caravan, front wheel drive, 3.3. It does not have an EGR valve. I do not know if the previous owners took it out or that model did not come with one. (California) I looked in the Chilton repair manual and under the emission controls section, "1991 Federal, California and Canadian 3.3L vacuum hose routing - front wheel drive" diagram there is no EGR!? The 1991 2.5L, Federal and Canadian, 1991 Federal, California, and Canadian 3.0L don't have an EGR either. But the 1991 California 2.5L diagram does have one. Am I reading these diagrams correctly? Am I not supposed to have an EGR? Both PepBoys and Autozone are able to find the part when I give them my model information. This call came about because I failed the smog check because of high NOx. Two years ago I just squeaked by. In researching possible reasons, I found out that that is the function of the EGR valve. I looked inside and I don't see any hanging vacuum hose where it would have been connected (although that could have been taken out at the source which I don't know where) and I don't see a dangling electric plug either.

What else can I do to lower my NOx. I may have made things worse by changing the spark plugs and wires which might make the temperature hotter! I changed the air and gas filters...all before I found out the mechanism of NOx production and heat.


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