Question about 1989 Jeep Cherokee

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We have a six cylinder fuel injected 89 jeep cherokee. It has never started well. Lots of miles. A few weeks ago it would not shift well and started loading up and misfiring / back firing. We have since changed fuel filter, cap, rotor, plugs, EGR, O2 sensor and checked for vacuum leaks. It runs alot better than when we started but still acts like it loads up and starts back firing, but will run well under full acceleration (peddle to the floor).

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Have your fuel injectors checked especially if you have ever ran it out of gas...you may have a sticking injection needle

Posted on Aug 08, 2010

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Is there a difference between a1989 and a 1998 Jeep Cherokee flywheel


what engine, I toss my engine coin and land on 4.0L

10 long years, (hopeless really)
first off the 89 runs a FRENCh RENIX ecu, EFI injection
so the 1998 does not use this ECU ever ,that means all that CKP sensor stuff
is ALL DIFFERENT. the tone wheel marks are NOT THE SAME.

jeep dealer pages show you what fits. ever think to try jeep.?

this years 1988 to 1998 are turbulent years, 1996 is OBD2 and big change then 89 year, there.
  1. The Chrysler buy out.
  2. and EPA rules.
Scary no? should be....
see link and this (generalized, spec. cars and years, vary, usa)
  • 1986 - Renix TBI available on Jeep 2.5 L four-cylinder engines. (early EFI, digital , not analog like relic VW's, in the past 1970s era) All Renix is NON OBD systems. up to 1990 inclusive)
  • 1987 - The new Renix controlled 4.0 L six-cylinder engine was rated at 173 hp (129 kW; 175 PS) and 220 lb·ft (298 N·m) of torque.
  • 1988 - 4.0 L output increased to 177 hp) and 224 lb·ft of torque now, due to higher compression ratio.
  • 1989 -90 Changed to French Renix MPFI. (multipoint fuel injection) now called MPI.
  • 1991 - 1st OBD, Chrysler Corporation system ( the above Renix control system is upgraded (trash canned), to USA OBD-I-compliant control electronics, the Chrysler HO EFI) with a working (SHOCK?) CEL lamp. + key trick works now.
  • (and SBEC-I or II ECU's 91-92 years) The key trick works starting in 1991.
  • 1993 are OBD1, and all good over the counter tools support it.
  • 1996 are OBD2, USA compliant, (EPA) and now all scan tools work here, (EPA law dictated that) and USA invented OBD2,
http://jeepdied.com/


Ever try jeep? online, just look them up your self for all years
and learn what part numbers match.

http://www.factorychryslerparts.com/productSearch.aspx?ukey_make=1064


Nov 23, 2016 | Jeep Cherokee Cars & Trucks

2 Answers

Where is the fuel pump relay and fuse on a 89 jeep Cherokee? I had the pump replaced six months ago but now I don't hear it come on any more and it wont crank. I just did a tuneup on it and it ran fine for...


the relay is in the small fuse box in the engine bay. relays can burn out and lock up in power flow. if this has happened it can also burn out the pump as there is no fuel being moved as the fuel line is cut of by the valve when engine is not running.

Oct 14, 2013 | 1989 Jeep 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

2 Answers

Hesitant starting


WELL DID YOU REPLACE FULE FILTER BUT ANY WAYS THE DO YOU HAVE 4.0 0R 5.2 IF YOU 4.0 THE COIL COULD BE THE PROMBLEM OR THE PIC UP IN DISTURBITER IT HALLFEC TYP OR IT SOUNDS LIKE CRANK SENSOR ON THE BACK OF BELL HOUSEING LOST OF PROMBLEM WITH THE CRANCK SENSOR HOPE THIS HELPS

Aug 12, 2009 | 1997 Jeep Grand Cherokee

1 Answer

1998 jeep cherokee can smell exhaust when idled


check the exhaust manifold.It is prone to cracking at the expansion joints.Causing you to smell exhaust and confusing the upstream o2 sensor

Aug 02, 2009 | 1998 Jeep Cherokee

1 Answer

Spins wont start


does it have fuel pressure? sounds like the fuel pump is not working to me.

Apr 28, 2009 | Jeep Grand Cherokee Cars & Trucks

1 Answer

1997 Jeep Grand Cherokee. Stalls out,engine quits running


since its a 1997 your jeep has EFI, electronic fuel injection. The most probable reason for your troubles would be the injectors or a problem with the computer controling them, not allowing enough gas to be pushed into the cylinder causing stalling or lack of power, also too much gas iin the cylinder can lead to back firing and stalling. This would also explain the reason it takes so long to start back up some times, all the excess gas in the cylinder is flooding the motor and u have to wait till the gas disipates till the engine will turn over.

Mar 21, 2009 | 1997 Jeep Grand Cherokee

1 Answer

1996 Jeep Grand Cherokee stalls when brakes are applied


My 2000 Grand Cherokee had the same problem, without all the sputtering, it would just die approaching a stop. We could only keep it running by slightly pushing down on the gas petal when coming to a stop. I replaced the Throttle Position Sensor, but that didn't change anything. A new mechanic I found replaced the Idle Air Control Valve, and we've had no problems in a week.

Jan 02, 2009 | 1986 Jeep Cherokee

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