Question about 1990 Ford F250

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What is NOx in a 1995 GMC1500 truck? - 1990 Ford F250

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Same as it is for all cars. Nitrogen Oxide http://en.wikipedia.org/wiki/NOx

Posted on Feb 13, 2012

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Wher egr value located


Here's a link to a picture of what the EGR look's like,it's at the back of the engine,easy to remove.When bad, vehicles can experience poor engine performance, poor idle, high NOx emissions, failed emissions test, hesitation, engine surging http://www.autozone.com/emission-control-and-exhaust/egr-valve/duralast-egr-valve/volvo/960/1995/6-cylinders-9-2-9l-efi-dohc/857098_162245_0

Sep 27, 2015 | 1995 Volvo 960

1 Answer

Rattling noise when exceleating


egr system not working causeing chain like rattle. nox gas to high.

Dec 16, 2012 | 1995 Ford Explorer

1 Answer

My 1995 Nissan pick up truck failed the emission test from NOx oxides of nitrogen. The standard is 3.00 mine was 3.26, what could be the problem, is it the EGR valve?


NOX is formed from high pressure and temperature above 2500 degrees. The job of the egr is to recirculate exaust back into the cylinder to give it a cooler charge (exhaust wont burn). Make sure your cooling system is up to par and clean your egr with some carb cleaner and make sure the passages are clear. egr valves and passages get very dirty

Sep 08, 2011 | Nissan Pickup Cars & Trucks

1 Answer

High Nox levels on emmission test


here are the possible causes of high nox levels, Misfire condition
Malfunctioning or improperly adjusted EGR valve
Failed oxygen sensor
Leak in exhaust tubing upstream of converter
Excessive carbon deposits in combustion chamber
Improper spark advance
Blocked coolant passage
Overly lean air-fuel mixture
Damaged cold air duct
Failed or malfunctioning catalytic converter
Corroded or damaged engine sensor electrical connections.the best advice is to take it to a emission specialist to check it out! good-luck!

Apr 29, 2011 | 1995 Mercury Tracer

1 Answer

What is hc and nox?


Nox has to do with your exhaust.

Feb 23, 2011 | 1995 Nissan Sentra

1 Answer

I took my daughters 1995 Nissan Altima for its two year smog inspection and it failed three times due to nox failure at levels around 1400. Back in march of 2009 I took it to a reputable shop and they...


Check the ports if there is any carbon,I doubt it,
but you got to look
I would make sure you don't have overheating issues
That is the cause of NOX (High Combustion Temp)
Check fuel pressure
Use synthetic oil in engine
Check PCV Hoses etc

Feb 06, 2011 | 1995 Nissan Altima

1 Answer

Asm test NOx (ppm) 1842 limit, 2259 emissions failed


any check engine lights on sounds like a oxygen sensor

Dec 09, 2010 | 1995 Saturn Sl

2 Answers

Search an user manual for a plymouth voyager mod95 v6 3.0 for download


Can check this information in:
- Autozone.com (free register): Covers all U.S. and Canadian models of the Chrysler Town & Country, Dodge Caravan and Plymouth Voyager 1984-1995.
- 1995 Plymouth Voyager Owners Manual (for sale)

I hope helps with this (remember rated this help). Good luck.

Dec 31, 2009 | 1995 Plymouth Voyager

1 Answer

New catalytic, can't pass e-test,too much Nox, almost double the limit,temp sticker running out PLEASE HELP! 95 yj 4.0L


Nox is heat related not cat. Your car is running to lean you need to get it to burn more fuel. Check EGR valve.

Dec 20, 2009 | 1995 Jeep Wrangler

1 Answer

Failed e test-nox


check the egr system

Jan 20, 2009 | 1995 Buick LeSabre

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