0
You failed smog on a 94 jeep Cherokee high nox 1700ppm What can you replace to pass?
Wiki User
∙ 13y ago
The Nox emissions on the '93-'' 95 era G. Cherokees are controlled %100 by the catalytic converter!. There is no EGR on these 4.0 liter 6 cylinder engines, so the Nox gets very high. Very irritating that older Cherokees in rather rough condition pass because they have EGR systems while my Grand with a NEW ENGINE won't! Needless to say my car has great compression, all new tuneup parts and filters, new O2 sensor and cleaned injectors!
It has required a new Cat every 2 years since I owned it (@8 years) and the really expensive CAT that is OEM (@$700) didn't last any longer. Now I failed again. Owning an older car in California is HELL! Oh yeah, I changed the crank position sensor, map sensor also- no effect. A new Cat will get you over the hurdle (just!) however, I doubt it really can keep it clean more than a week or two. By the way, No error codes, runs like a clock and I've been a mechanic for over 40 years. Its really the manufacturer's and States fault but the problem is all owned by the poor owner. Del
Wiki User
∙ 13y ago
Add your answer:
Earn +20 pts
Cherokee 4.0l engine what is considered high mileage?
Over 200,000 miles
What causes high nitrogen oxides in a 1995 jeep Cherokee?
nox is from exhaust temps too high or a cat. convertor breakdown.
Where is the High Mount Brake Light in a 1998 Grand Cherokee?
If equipped, it is above the liftgate glass.
What kind of oil should i put in my 1994 high output 4.0 jeep Cherokee?
10w3010w30
How do you turn on high beams on 94 jeep Cherokee sport?
pull the turn signal lever toward you.
Why does your 1999 Pontiac grand am heater ac only work on high?
There is a resistor pack operated by the fan switch. It has failed. You need to replace it.
Where exactly is Cherokee High School located in Georgia?
The Cherokee High School in Georgia is located in Cherokee County in Georgia. It is one of eight public schools in the Cherokee County School District.
Where would you check fuses for a 1999 Jeep Cherokee HVAC that only works on the high speed?
It is not a fuse problem. The HVAC resistor pack is defective. Replace it.
What does a P0123 diagnostic code mean for a 2002 jeep grand Cherokee Laredo mean?
P0123 TPS volts high. Replace the throttle position sensor.
How far is it from Cherokee high to Pepplebrook high school?
Use Google Maps. Type in "Cherokee High School, [city], [state] to Pepplebrook High School, [city], [state]." Here's the link: http://maps.google.com/
Why do you think tariff reform failed?
because they were high
Your 95 prizm failed the emissions the nox reads too high what do you need to replace you cannot find a egr valve on this car it is a 1.6 liter with a 5 speed?
have it scanned and have them ck your oxygen sensor
When was Livingston High School - New Jersey - created?
Cherokee High School - New Jersey - was created in 1975.
Jeep Grand Cherokee with the 4.7 liter engine and it consistently revs to around 2200 rpm on start up regardless of engine temperature can it be adjusted to not rev so high?
Replace the TPS (Throttle Position Sensor).
Where is hendersonville high at?
It is located in Hendersonville, TN on 123 Cherokee Rd.
What color is the high beam wire on a 1998 jeep Cherokee?
Orange
Why doesn't the fan switch on a 98 Grand Cherokee work on high. It works on both low and medium?
Try replace the resistor. It's locate pass.side under dash by fan blower with one plug and two bolts.
