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Please help with emission failure 1995 Ram 1500

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Old 09-22-2011, 05:45 PM
jnickens jnickens is offline
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Default Please help with emission failure 1995 Ram 1500

I have a 1995 Ram 1500 2 wheel drive with the 5.2 engine. It failed the test with high HC and high NOx, the catalytic converter and O2 sensers are good. The truck runs good, no hesitation during acceleration, never stalls, and idles smoothly. I cannot afford to take it to a garage for repairs it may or may not need. Please give me some advice as to what troubleshooting I can do my self first. I am thinking PVC valve and/or EGR valve. The timing feels ok. Any input will be appreciated.
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Old 09-22-2011, 05:47 PM
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Get a PCV valve from the dealer. Less than 10 bucks.

Read the Plenum thread stickied at the top of this forum. If yours hasn't been fixed yet, it is probably (past) time.

Check fuel pressure.......
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Old 09-22-2011, 06:15 PM
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Quote:
Originally Posted by jnickens View Post
the catalytic converter and O2 sensers are good.
How do you know that?
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Old 09-22-2011, 06:46 PM
jnickens jnickens is offline
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Default About the emission results

The test verified the O2 sensor was good and the catalytic converter was good... I manually checked the cc and knew it was good before test.
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Old 09-22-2011, 06:52 PM
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The test means nothing, I've done tons of E tests on o2's(and a new one solved the problem). And how did you "manually" check the CC ? One other thing, you also stated that your "o2 senors" are good(plural) a 95 only has one?
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50mm Fastman TB, Hughes Plate,2" Hell Bent ,Volant CAI
Flowmaster 50 series, Rock Solid Ram Steering fix,B&M trans cooler,fuzzy dice good for 5HP
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Old 09-22-2011, 07:13 PM
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Default Old school way to check catalytic converter

Yes you will laugh....but I checked the catalytic converter by parking on some high grass and watching for smoke....then I used an oven thermometor and verified that the temperature at the outlet was higher than at the inlet....Also, the emissions test verified the catalytic converter and O2 sensor to be good. Yes, I know I only have one O2 sensor.
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Old 09-22-2011, 07:22 PM
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I won't laugh. But, wrong, wrong, and wrong. LOL
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Old 09-22-2011, 07:31 PM
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Default Wrong Wrong Wrong..Ok so what is Right?

I am on here asking for help and advice...so what do you recommend?
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Old 09-22-2011, 08:29 PM
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How old is the O2 sensor? How many miles on the truck? Has the plenum been fixed? (that would be something I would check immediately, if you are burning oil from a blown plenum, you will NEVER pass the sniffer test.)
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Old 09-22-2011, 08:42 PM
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Default What's a Plenum

Sorry, now I feel stupid. What the heck is a plenum and how do I check it.
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Old 09-22-2011, 08:42 PM
 
 
 
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