Question about 1994 Jeep Wrangler
Wont pass smog fails evap. pressure test emissions are good
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Posted on Jan 02, 2017
SOURCE: jeep won't pass smog test
its taking a chance if u dont want to spend the money u may be able to patch with kit or exhast tape i am a ny inspector and i may over look if it were quiet and i would be able to get good reading to exhast probe otherwise my hands are tied. i have a 90 and its a runner worth the investment i know it still has a lot of life left in it
Posted on Apr 03, 2009
Running out of power going up a hill is generally the fuel pump. Now days a plugged catalytic converter will do it also. The fuel evaporation test could be a bad gas cap or evaporation canister or hose somewhere. The exhaust manifold is a jeep thing, expansion and contraction, hot cold over and over. Have it welded or replaced.
Posted on Jun 06, 2009
everthing effects the reading. pedal position, rpm load engine temp. air temp. all that stuff you added was just a waste of time and money. What you should of done wa diagnosed it correctly so your not cheating an emission test. Since barley failed the first time I would of recommended a tunup if not done in 40,000 miles. I would have looked at the scanner data to see if the inputs were correct. Iwould have serviced the oil if its been awhile. If everything checked out i would of recommended a catalytic converter. But there are 3 test to determine if the cat is dead we do first. If your car was barley failing and you needed a tunup and the cat was still good the need for a tuneup could toast the cat within a couple weeks.
Posted on Aug 01, 2009
Testimonial: "Assessment was correct. Needed the catalytic converter replaced."
YES A CAP FROM THE DEALER WILL MOST LIKELY SOLVE THIS ISSUE...SOME OF THE AFTERMARKET CAPS ARE NOT MADE TO THE PROPER SPECS TO MAINTAIN PROPER PRESSURE/VACUUM ON THE SYSTEM WHEN THE EVAP TEST BY THE COMPUTER OCCURS
Posted on Aug 31, 2009
Testimonial: "Thank you- I'll try that."
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