Question about 1995 Jeep Grand Cherokee

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Failed emissions bought 95 jeep cherokee and it passed smog in feb, took it in today to smog it and it failed due to pcv, and NO is too high at 15mph what should i do and how much will this now cost me

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A new pcv is only like 3 bucks try having injectors cleaned out

Posted on Jul 06, 2009

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1 Answer

Does not pass smog at 25mph


IT FAILED AFTER THE CAT TOO?
NO RESPONSE
SO

POST THE FAILED REPORT
THERE IS NO HELPING ANYONE LACKING THAT.
CO =
HC=
NOX=
-----
IF PRESENT
CO2=
O2=

DATA MATTERS. BIG TIME.

WHY GUESS?
WHY GO BROKE DOING ALL THAT.?


The engine is running real bad.
this is a fact.
due failing with new cat.
so....
scan it yet
and print on all sensors readings?

or ask you mechanic to do that, he knows how.

Jan 11, 2016 | 1995 Jeep Grand Cherokee

1 Answer

My 92 GMC failed smog only in the HC area. CA emissions requires max118 at 15mph and mine was 123, max at 25mph is 98 and mine was 97. What could it be?


sounds dumb but here in maryland people with older vehicles have problems passing emissions test. sometimes fresh oil change can help also possibly vehicle is in need of a tune up including plugs wire cap rotor pcv valve and fuel filter. one other thing could be the catalyst converter might not be cleaning to its full potential. hope this helps

Jan 04, 2014 | GMC Sierra Cars & Trucks

1 Answer

I'm barely failing smog due to high hydrocarbons.


Hi Larry, I your position I believe I would take the vehicle for a diagnostic scan and then check the read outs. There could be a problem with any one of a number of sensors but I believe you'll end up with all odds pointing at the cat. Regards John

Aug 25, 2012 | Cars & Trucks

1 Answer

My 1990 chevy astro van didn't pass smog. Paperwork says it failed the following; Ignition timing: 99 ATDC. Also, ASM Emission Test Results; 15mph HC (PPM) max is 122 measured 127, 25mph max is 102...


the smog test looks like the engine is miss firing, that could cause the timing to be out of whack also, try a old fashioned tune up, new spark plugs, wires, and filters also replace the PCV valve. any time you see the NO that high suspect a miss fire.

Feb 24, 2011 | Chevrolet Astro Cars & Trucks

2 Answers

Need 92 toyota paseo to pass CA smog test ! What causes too high HC in smog test????


High HC means moisture in the system. Try driving it longer then take it to the smog shop. Otherwise it could be hard like a head gasket or easy such as a PCV not functioning. Any ways you should always drive it about 20 miles before smog check, longer when the weather is cold.

Nov 30, 2010 | Toyota Paseo Cars & Trucks

1 Answer

1993 Grand Jeep Cherokee has fluctuating High emissions


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.

Aug 01, 2009 | 1993 Jeep Grand Cherokee

1 Answer

Failed smog test


trade it in on the scrappage scheme against a new one .or take it to an authorised garage for emmisions ,cant just point a finger at a certain component and say change that .Sorry but without the right equipment i would only be making educated guesses .What condition is the air filter in ---did you clean it before you went for the test

Jun 30, 2009 | 1995 Jeep Grand Cherokee

1 Answer

PCV valve/emission hose broke. (it's one piece)


You should be able to find one in just about any junkyard.

Apr 17, 2009 | 1994 Jeep Cherokee Country

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