Question about 1990 Jeep Cherokee Limited

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I have a 1990 jeep cherkee larado 4.0 liter engine

I replaced the rotor, distriborter cap, spark plug and wire set, vacume line's ,battery, battery cable's, crank shaft sensor fuel filter, fuel regulator, fuel,pump ,and there is no fuel coming out of the injector rail no gas going to the injectors, will not start how can i fix this what should i check next is there a fuse for the fuel pump,and how can i tell wich relay is for the fuel pump there are four relays and if it is the relay which one is it there are four of them on the passenger side above the wheel well i realy need help this is the only transportation my family has and i'm disabled i need to be able to go to my doctor apointments and my wife needs to get to work

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  • carhob May 11, 2010

    when you turn key on is your fuel gage working,do you have power at elect.conn. at sen ding at gas tank?

  • Richard Scordino May 11, 2010

    Which engine? If a 4.0, it's likely the second from the firewall end of the power distribution center, and the same as starter relay (you can swap them to check if it's working...if bad, starter won't work when swapped) I checked this on a 91& 93, both are in same place. (labeled inside box cover)

  • yadayada
    yadayada May 11, 2010

    is the fuel pump running? with all the money u have spent on un needed parts you could have had the dealer fix this.

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Jeeps are famous for the fuel pumps in the tank going out. More than likely the fuel pump has quit on you. I don't have a book to tell you which relay would go the to fuel pump. It should be marked in the junction box for easy identification.

Posted on Mar 08, 2009

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On my 1993 wrangler with a 2 5 if i try to start it it only fires on cylinder 1 and 3 if i shut it off and try again it fires only on 2 and 4 what would cause this


Sounds like a spark plug or distributor problem.... Change out all your spark plugs and check your wires for breaks. Check fuel injectors for build-up.

Feb 06, 2016 | 1993 Jeep Wrangler

1 Answer

I replaced the spark plugs, gaped at .35, replaced wiring, took each wire and replaced from the one I replace so the firing order should be correct, replaced the cap and rotor. The had been running before...


If the engine is balking or kicking back while you are cranking it over, chances are you may still have gotten the wires on the cap wrong. You may have the correct order but started in the wrong spot.
Take a drinking straw and put it into the #1 plug hole (don't let it fall in) and rotate the engine by hand 'till the timing mark on the front pulley lines up with the "0" on the timing scale and the straw is at it's highest position. Look at the rotor. it should be pointing roughly at the R/F headlight. Mark the position with a crayon etc on the outside of the housing and replace the cap. That is the #1 plug wire position...the remainder of the wires are installed in the same direction the rotor turns...153624 or 18436572 (if 8cyl). If the rotor points 180 degrees away from where I said, turn the engine one more revolution.

Feb 28, 2011 | Jeep Cherokee Cars & Trucks

1 Answer

I just changed the plugs,wires,distributor cap on my 1996 jeep grand cherokee limited, the firing order is correct,but my engine is misfiring&the codes that come up on my computer/scanner reads misfire...


I would manually set it up to top dead center. (Rotate the engine by using a breaker bar and socket on the crankshaft pully bolt the same direction as it runs) with the front cylinder, #1, assuming you have a 4.0 liter straight six, spark plug out. Put your finger in the spark plug hole, and as the engine is turned by hand, you will feel "air pressure." This is coming up onto the compression stroke. With the piston at top, you are at top dead center. (Zero aligned for timing marks) Now remove the distributor cap, your rotor should be pointing at the stud for the number one plug wire.
Turning it will then move the rotor to the next plug to be fired.

Nov 10, 2010 | 1996 Jeep Grand Cherokee

2 Answers

I have a 93 jeep grand cherokee larado have replaced alternator, starter, battery, coil, still has no spark got power to everything coil has power at it but nothing comes out of it repaced cap and rotor...


The only thing left to replace would be the electronic trigger module which is mounted inside the distributor. If this module is bad it won't switch the coil on and off to produce spark.

Sep 16, 2010 | 1993 Jeep Grand Cherokee

3 Answers

IT IS MISSING iVE REPLACED THE PLUGS


Misfiring Escort...
THE Guide!
1- check HT leads, including the main lead from the coil. pull one off at a time and see if there is any difference in engine noise, if a lead makes no difference to the engine note when you pull it off it is broken and you need a new lead for that plug - best to replace a full set since the others will be on their way out too. try each plug and check the leads like this with the engine running, 2- clean/repace distributor cap and rotor arm if it is dirty or corroded, there are 2 Clips, one on either side of the distributor cap, pull em off, take the distributor cap off, look inside the cap, there are 4 pins, are they all corroded and covered in white stuff?, they should be shiny brass, clean them up with fine wet and dry sandpaper, make them flat and shiny again. also still on the distributor is the rotor arm, pull it off, it may need a bit of wiggling - clean this up the same with the wet and dry, get a very fine grade of wet and dry sandpaper since you want the metal to be as smooth as possible afterwards, once the cap and rotor both have shiny metal clean them with mild detergent, rinse and dry them fully, not only to clean them of dirt and grime but also the metal filings from the sanding are "bad" for the distributor.. once dried refit the rotor arm (it only goes on one way, do not force it) refit the distributor cap, make sure its the right way round (make a note of its position BEFORE you remove it) 3- check if air filter is blocked and replace it if it is very dirty - if you think it is blocked try running the engine without the filter and see if it runs better, you know for sure you have a bad filter if this is the case. 4- check fuel filter (especially on 1.0 and 1.3 engines) for blockage and fuel line for blockage (replacement costs £3.50-£5 or so)
apart from that its "experience required" jobs like setting the ignition timing - just get a normal tune up after you've checked out the leads and dizzy/rotor arm which is quite cheap on an escort, you only turn the dizzy and move 1 screw...
Just for reference in case i have misjudged you're ability and you want to try tune it yourself... 1989 MK4 Ford Escort ;-D you didn't give CC so you'll get all engine data for 1989! (petrol)
NOTE: the CVH engines have hydraulic tappets so no adjustment is possible and no data is given. ---------------------------------------------
Escort 1.3 "HCS" 1988-1990 1297cc Valve tappet clearances - Inlet --- 0.20mm - Exhaust 0.32mm Firing order 1-2-4-3 Idle speed - 700-800RPM -
750RPM is optimal idle but anything between 700-800RMP is acceptable.
Ignition Timing- 15 Degrees before top dead center at idle RPM
Spark Plugs : Motorcraft - AGRF22 Champion - RS9YC Spark Plug Gap - 1.00mm (check it is right or it will misfire...)
---------------------------------------------------------------------
Escort 1.4 (1392cc) "CVH" - 1986-1990
Firing Order 1-3-4-2 Idle speed 750-850RPM, 800 being optimum _____ NOTE: This engine requires premium fuel (97 Ron) or it will run poorly - damage may result from using low grade fuel. ----------------------------
Ignition Timing - 12 degrees BTDC at idle RPM. Spark plugs - Motorcraft - AGPR22C Champion - RC7YC Spark plug gap 0.75mm (check this)

----------------------------------------------------------
Escort 1.4i Catalyst - 1.4 "CVH" 1392cc 1989-1990
Idle RPM 850-950RPM 900RPM Being optimum :This engine needs only regular unledad 95RON
Ignition timing - 8 to 12 degrees BTDC 10 degrees being optimum Spark PLugs - Motorcraft - AGPR22C1 Champion - RC7YC
---------------------------------------------------------------------------
Ford Escort 1.6 "CVH" 1596CC
Firing order 1-3-4-2 Idle speed - 750-850RPM - 800 being optimal Ignition Timing - 12 degrees BTDC at 800 RPM Spark Plugs - Motorcraft - AGPR22C Champion - RC7YC Spark Plug Gap - 0.75mm (check it!)
NOTE :This engine will run on regular fuel (95 RON) but the timing should be set to 8 Degrees BTDC at idle RPM for this fuel.
------------------------------------------------------------
FORD ESCORT 1.1 - 1989-1990 - 1118cc "HCS"
Firing order 1-2-4-3
Idle speed - 700-800RPM 750 Being optimal
This engine runs on regular or premium fuel without adjustment
Ignition Timing - 10 degrees BTDC
Spark Plugs - Motorcraft - AGRF22C1 Champion - RS9YC Spark Plug Gap 1.00mm (check this!)
-------------------------------------
So check your spark plug gaps with feeler guages if you don't have a feeler guage they're less than a fiver at a cheap motor shop - even pound shop and market stalls sometimes have them.
Apart from that lot - these cars can run bad if the battery is weak, they chug like hell on a half charged or failing battery, so make sure the battery is strong too...
The carburettor jets could be clogged or worn... Inlet manifold could be leaking?
Check the low tension wiring (the wiring on the ignition coil, the two round plugs that puch onto the coil) one red and one green/black/stripey/somethin - trace these two wires around the engine bay and check them for damage and loose connections.
Thats all I can think of right now tell me how you get on, I KNOW these cars... I'll go step by step if you need help checking everything/replacing whats wrong,
------------------------------
Good luck.

Jan 20, 2010 | 1989 Ford Escort

1 Answer

How to change cap n rotor and spark plugs and wires


you can try useing a hot spark sloution,this is usualy an answe on gm products but its worth atry
unplug the ciol wire an leve it about 1/2 inch away its ******* the module but the system wil supply the spark

Oct 20, 2008 | 1990 Jeep Cherokee Limited

1 Answer

Jeep cherokee 1990


The 1987-90 Jeep Cherokee with the Renix Eletronic Engine controls take somewhere between 4-7 revolutions before the computer has enough information to get the engine started.

If it takes longe rthan that, it may be time for a full tune-up:
Distibutor Cap and rotor
Spark plugs
Spark Plug wires
Fuel filter
Air filter
and possibly an oxygen sensor

Aug 17, 2008 | 1987 Jeep Cherokee

1 Answer

Need diagram for 1998 Jeep Cherokee sport spark plug wiring


hi, you didn't say what engine you have, I'll assume it's the 4.0 L in line 6 cylinder. Standing on the PASSENGER side of the jeep, the spark plug at the front of the engine is #1, the next is #2, and so on to #6 which is at the back (nearest the windshield).
The distributor is between you and the valve cover on the engine. Pretend the top of the distributor cap is the face of a clock.
The #1 spark plug wire goes in the cap at what would be the 6 o'clock position, (as viewed from your position standing on the passenger side, facing the side of the engine). The firing order direction is clockwise, so the 'hand' of the clock (actually the rotor in the cap) would continue to the next distributor cap plug in, which would be spark plug wire to #5 (8 o'clock position), then #3 (10 o'clock position), #6 (12 o'clock position), #2 (2 o'clock position), #4 (4 o'clock position). So all this means isi your firing order is, 1,5,3,6,2,4 If you have a different motor or any questions, let me know. Good Luck! countrycurt0

Aug 06, 2008 | 1996 Jeep Cherokee Country

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