Question about 1996 Jeep Grand Cherokee

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1993 Grand Jeep Cherokee. My check engine light comes on after driving about 10 - 15 minutes. Showing codes 51 and 62. The oxygen sensor was replaced 3 months ago. When the check engine light comes on, it really burns up the gas. The catalytic converter was replaced 1 year ago. Any suggestions would be appreciated.

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  • Jeep Master
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CODE 51 AIR FUEL AT LIMIT OXYGEN SENSOR SIGNAL INPUT INDICATES LEAN AIR FUEL RATIO CONDITION DURING ENGINE OPERATION. CODE 62 EMR MILEAGE NOT STORED UNSUCCESSFUL ATTEMPT TO UPDATE EMR MILEAGE IN THE CONTROLLER EEPROM. POSSIBLE CAUSE FOR A LEAN AIR FUEL RATIO AIR LEAKS IN INTAKE MANIFOLD, LEAKS IN EXHAUST PIPES, LEAKS IN EXHAUST MANIFOLD,LOW FUEL PRESSURE FUEL FILTER CLOGGED OR PRESSURE REGULATOR FAULTY,ONE OR MORE FUEL INJECTORS RESTRICTED,VACUUM HOSE IS DISCONNECTED BROKEN LEAKING OR LOOSE.

Posted on Aug 27, 2010

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1 Answer

1993 jeep grand cherokee v8 no spark from coil


Look to see if the check engine light come on, on your dashboard, when you turn the ignition on. If that light does not come on, then your ecu computer is in need of repair and your jeep will not start until that light does come on.
Alternately, if that light is on, it could be your crank sensor that's bad on the jeep.

Sep 10, 2011 | 1993 Jeep Grand Cherokee

1 Answer

1993 jeep grand cherokee wont start till check engen light comes on


Your ecu computer is in need of repair. You have what is known as the Delayed Check Engine Light problem. There are a few components inside the ecu that are slowly failing and eventually will completely fail. The ignition has to be turned on, for a few minutes, and the jeep won't start until the check engine light eventually comes on. This is because the ecu feeds power to the fuel pump and injector relays and won't feed power until that light comes on. Have it repaired.

Mar 06, 2011 | 1993 Jeep Grand Cherokee

1 Answer

I have code p0137 coming up on my 2003 jeep grand cherokee laredo what does the code mean?


P0137 - Oxygen O2 Sensor Circuit Low Voltage (Bank 1, Sensor 2)

Essentially the same as P0136, P0137 refers to the second oxygen sensor on Bank 1. P0137 means the O2 oxygen sensor's voltage remained low for longer than 2 minutes. This, is interpreted by the ECM as a low voltage condition and sets the MIL. Bank 1 Sensor 2 is located to the rear of the catalytic converter and should produce an output signal relative to oxygen storage capacity of the catalytic converter. This rear (sensor 2) sensor is less active than the signal produced by the front sensor. However, if the ECM senses the sensor is inactive, this code will set.

Symptoms: There may be no visible symptoms to the driver, other than the MIL (Check Engine / Service Engine Soon) illumination.

Causes: A code P0137 may mean that one or more of the following has happened:
* Faulty o2 sensor Exhaust leak near the rear sensor
* Plugged catalyst
* Short to voltage on O2 signal circuit
* High resistance or open on O2 signal circuit

Possible Solutions:
* Replace faulty sensor
* Repair exhaust leak near the rear sensor
* Check for restriction in catalyst and replace as necessary
* Repair short, open, or high resistance on o2 signal circuit

Hpe hti shelps (remember comment and rated this).

Jul 26, 2010 | 2003 Jeep Grand Cherokee

1 Answer

The rpm of my 93' jeep grand cherokee,changes from 2,000 to 3,000 rpm,when i'm driving at 70 mph, it does this 3 or 4 times in a minute some times it doesn't do it ' i've changed the tps and it still does...


have u run a fault code test on the systems computer, this sounds like maybe a Vehicle speed sensor problem, the speed sensor is on the side of the transmission, but do the code test, here is how u do that, go to the link below for instruction's that apply to all Chrysler cars and trucks

http://check-engine-light-codes.blogspot.com/2006/04/chrysler-1985-95-obd1-code-self.html

Jun 29, 2010 | 1993 Jeep Grand Cherokee

1 Answer

Check engine light on,1997 Jeep Grand Cherokee,4.0 six cylinder.code 1757.cleared code,comes back on after a few minutes of driving. Trans is sluggish,when pulling out,after a complete stop.


I just had those similar symptoms with my 97 grand cherokee a week ago and my crankshaft position sensor had to be replaced...hope this helps.

Jan 23, 2010 | 1997 Jeep Grand Cherokee

1 Answer

Engine trouble light coming on 2003 jeep gr. cherokee


If the light is ywllow, it's emmissions or some sensor. You can drive to a service center and have the codes read. If the light is red...STOP!! and check engine oil. DO NOT drive further!! Have it towed in for service.

Dec 30, 2009 | 2003 Jeep Grand Cherokee

1 Answer

My jeep grand cherokee check engine light is on and I've had the oxygen sensors already replaced


Remove the battery connectors for 5 minutes and replace back afterward.

This will do the trick.

Rate this and make a testimonial.

Thanks.

Sep 29, 2009 | 2004 Jeep Grand Cherokee

2 Answers

1993 JEEP GRAND CHEROKEE LAREDO IM TOTALLY BAFFLED


Back up a minute...Do you have spark from the coil wire? (juice from coil) If so, change or check rotor and cap (wires do not all go bad at same time so unless they are wet, likely at least good enough to start engine)

Mar 05, 2009 | 1993 Jeep Grand Cherokee

2 Answers

Running rich. No power. 5.2 v8


it can cause it to run rich because the oxygen sensor may be getting a false reading as to how much oxygen is there....this in turn causes the pcm to add more fuel

Dec 02, 2008 | 1993 Jeep Grand Cherokee

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