Question about 1987 Jeep Cherokee

2 Answers

Replaced the 4.0L engine in my 87 cherokee. Used the old exhaust/intake manifold but new, oil, gas filter, spark pluggs and spark wires along with a new cap and rotor. Now I get very slow acceleation and it actually chugs right before I shift into a differnt gear. used engine only has 30,000 on it. Seems to idle just fine and very quite.

Posted by on

  • Philip Frye
    Philip Frye Nov 20, 2009

    The old engine had over 170K miles. It had just started with a loud knocking noise that came from the back of the inside of the engine. Even with the loud knocking it ran just fine. The loud knocking came after my son noticed a drop in oil pressure one day and very low power so he pulled it over to the side of the road and let it sit for around a 1/2 hour. Started it back up and he heard the knocking noise but the oil pressure came back up to normal and it regained it's power. Yes I used the old fuel Injectors but have changed all the old O - rings with new ones.

×

2 Answers

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Master
  • 4,472 Answers

How about when you hit the accelerator when its in neutral? How does the engine perform then? there could be a lot of possibilities at this point. what was reason for old engine being taken out and how many miles? did you use same injectors everything else? Once I have more information I can try and assist you further.
Thank you,
Lee

Posted on Nov 20, 2009

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 2 Answers

One question.did you meddle with the tps?when you start the motor,does the idling rise up then settle at 750rpm?need to know and willing to assist,bob,kenya

Posted on Jan 04, 2010

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

My jeep wont stay on but i have to give it gas to turn it on


replace spark plugs wires,problem could be ignition timing,idle speed too low.intake manifold vacuum leak,check all vacuum lines on intake check pcv valve make sure its getting vacuum and the vacuum line not disconnected or cracked broken if pcv is not working engine wont run correctly.

Oct 03, 2012 | 1988 Jeep Cherokee

1 Answer

2000 ALERO STALLS AT TRAFFIC LIGHT , NEW SPARK PLUGGS AND BOOTS ALONG WITH NEW FUEL FILTER BUT DSTILL STALLS


Could be a dirty throttle body or a faulty idle air control valve.
Is the check engine light on ?

Sep 05, 2012 | 2000 Oldsmobile Alero

1 Answer

How to replace head gasket on 4 cylander


2.6L Engine
  1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
  2. Drain the cooling system.
  3. Relieve the fuel system pressure.
  4. Remove or disconnect the following:
    • Negative battery cable
    • Hood
    • Accessory drive belts
    • Accelerator cable
    • Positive Crankcase Ventilation (PCV) valve and hose
    • Air intake duct
    • Fuel pressure regulator vacuum line
    • Canister hose
    • Brake booster vacuum line
    • Engine wiring harness connectors at right wheel housing
    • Ground cable connector at the intake manifold, starter and firewall
    • Heated Oxygen (HO2S) sensor connector
    • Alternator wiring connectors
    • Oil pressure switch connector
    • Starter motor harness connectors
    • Ignition coil connector
    • Spark plug wires
    • Distributor
    • Exhaust front pipe
    • Exhaust Gas Recirculation (EGR) gas temperature sensor connector
    • Air pump
    • EGR pipe
    • Heat shield
    • Exhaust manifold
    • Throttle Position (TP) switch connector
    • Cooling fan
    • Water pump pulley
    • Power steering pump
    • Intake manifold
    • Crankshaft pulley
    • Front cover
    • Timing belt. Refer to the Timing Belt unit repair section.
    • Valve cover
    • Rocker arms
    • Camshaft
    • Cylinder head
Cylinder head bolt loosening sequence - 2.6L engine

tecnovative_96.gif
  1. To install:
  2. NOTE: Refer to Section 1 of this manual for the cylinder head torque sequence illustration. The illustration is located after the Torque Specification Chart.
  3. NOTE: Lubricate the cylinder head bolts with clean engine oil for assembly.
  4. Install the cylinder head with a new gasket. Tighten the bolts in sequence as follows:
  5. Step 1: 58 ft. lbs. (75 Nm)
  6. Step 2: 72 ft. lbs. (98 Nm)
    1. Install or connect the following:
    2. Camshaft
    • Rocker arms
    • Valve cover
    • Timing belt
    • Front cover
    • Crankshaft pulley. Tighten the bolt to 87 ft. lbs. (128 Nm).
    • Intake manifold
    • Power steering pump
    • Water pump pulley
    • Cooling fan
    • TP switch connector
    • Exhaust manifold
    • Heat shield
    • EGR pipe
    • Air pump
    • EGR gas temperature sensor connector
    • Exhaust front pipe
    • Distributor
    • Spark plug wires
    • Ignition coil connector
    • Starter motor harness connectors
    • Oil pressure switch connector
    • Alternator wiring connectors
    • HO2S sensor connector
    • Ground cable connector at the intake manifold, starter and firewall
    • Engine wiring harness connectors at right wheel housing
    • Brake booster vacuum line
    • Canister hose
    • Fuel pressure regulator vacuum line
    • Air intake duct
    • PCV valve and hose
    • Accelerator cable
    • Accessory drive belts
    • Hood
    • Negative battery cable
    1. Fill the cooling system.
    2. Start the engine and check for leaks.

    tecnovative_65.jpg

    Feb 05, 2011 | 1997 Isuzu Rodeo

    1 Answer

    Need to replace engine (rod went through engine when it blew) on 1998 Mitsibushi Montero Sport 6 cyl 2WD. Are there any engines compatible with later models or do we need to look strictly for 1 1998...


    If you are going to put a used engine in the vehicle you will want to make sure that the engine is no more than one year before or after the date of your original engine so that you will not have to change very much from the old engine over to the engine that will be going into your vehicle. The auto industry changes their vehicles every year, and the more years that are between the original engine and the one that is going into the vehicle will often translate into how much has to be removed from the old engine and installed on the new engine for it to properly function in that vehicle, and especially to make the OBD-II system happy so that there is no check engine light on after installing the engine, and the difference can be from just having to change a sensor or two, to having to change all of the sensors, the fuel injectors, the oil pan, intake manifold and or throttle body, the exhaust manifolds and the valve covers. The most important thing is to be certain that all of the sensors that are on the old engine are exactly the same as on the engine that is going into the vehicle, and if any are different then swap them with the ones from the old engine. There should be no more or no less sensors than the original engine had on it and all of the sensors should be exactly like the original sensors or they should be the original sensors that are on the engine when the engine is installed into the vehicle.

    There are a few things to check for when purchasing a used engine, and check the tune-up parts to see how well the engine was maintained, and check the spark plugs to see how each spark plug was burning and that gives you an idea how well that cylinder was functioning, and what you are looking for will be uniformity among the spark plugs, and optimally there should only be a light tan color to the spark plugs, and any spark plug that is not or is fouled out with carbon or oil fouled was not burning properly and that cylinder will have had some kind of either mechanical, electrical, or a fuel related problem with it. Also remove the oil filter if it has one and pour it into a container or a drain pan so that you can look for any fine brass clouds in the oil, or for any metal shavings.

    If you are purchasing a new or a rebuilt engine then it will not matter because you will have to change over all of the sensors to the new engine, along with the intake manifold, the valve covers, any exhaust manifolds and usually the oil pan.

    Sep 13, 2010 | 1998 Mitsubishi Montero Sport

    1 Answer

    I REPLACED THE MOTOR (OLD ONE BLOWN) RUNS GREAT BUT ONCE IT @ RUNNING TEMP LOSES POWER STARTS POPPING THU INTAKE . SHUT OFF AND START UP AGAIN IT GOES AWAY FOR A FEW MIN THEN COMES BACK. WHAT CAN THIS B,...


    Check if the engine is over heating, such as the thermostat. But don't forget to check that the heat riser opens on the exhaust manifold. In general, popping is either too lean or bad timing. Check for vacuum buildup in gas tank by listening for whoosh when you open cap. Check for vacuum leak with vacuum gauge attached to manifold. Check for plugged catalytic converter if the old motor was dumping oil, by attaching pressure gauge to oxygen sensor port. Check timing. See if power loss is all cylinders or just one, by removing plug wires one at a time. Finally, check oxygen sensor with ohmmeter (sorry I don't know the expected reading.)

    Jan 17, 2010 | 1993 Jeep Grand Cherokee

    2 Answers

    1993 Chevy S10 Blazer engine hesitation with smoke from exhaust


    Had a 94 Olds Bravada that did a similar thing and it was EGR valve on the front of the intake. It' s easy to take off and clean with WD 40 and if you have an air compressor blow it out good.

    Dec 19, 2009 | 1993 Chevrolet S-10 Blazer

    1 Answer

    Hesitation on acceleration, engine delay, almost cuts out in 93' Plym Gr Voyager LE with 3.8L eng. (74K mi), main use to tranport 2 wheelchair bound individuals to and from doctor appointments (is modified...


    Have someone press on the gas petal while you feel the exhaust coming out of the tail pipe.It should have more exhaust coming out as the petal is pressed farther down. This method is checking for a restriction in your catalitic converter. A high flow type is best. Also make sure your air filter is clean and nothing blocking your air filters intake.

    Aug 31, 2009 | 1996 Plymouth Grand Voyager

    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

    I need a diagram of a 1995 ford escort engine


    96 escort 1.9L

    bb97132.gif
    e0d7524.gif

    Engine Components
    Item Part Number Description 1 6766 Oil Filler Cap 2 6A548 (8 Req'd) Valve Cover Bolt 3 6582 Valve Cover 4 — Exhaust Manifold Shield-to-Exhaust Manifold Nut (4 Req'd) 5 9A462 Exhaust Manifold Shield 6 — Exhaust Manifold Shield Stud (4 Req'd) 7 9430 Exhaust Manifold 8 9454 Exhaust Manifold Nut 9 9448 Exhaust Manifold Gasket 10 — Exhaust Manifold Stud (Fine Thread), Short (4 Req'd) 11 — Exhaust Manifold Stud, Long (1 Req'd) 12 — Exhaust Manifold Stud (Medium Thread), Short (1 Req'd) 13 6518 Valve Spring Retainer Key 14 6514 Valve Spring Retainer 15 6513 Valve Spring and Damper, Intake 16 6C515 Valve Tappet Guide Plate Retainer 17 6571 Valve Stem Seal 18 6513 Valve Spring, Exhaust 19 12405 Spark Plug 20 6269 Camshaft Thrust Plate 21 — Camshaft Thrust Plate Bolt (2 Req'd) 22 — Cup Plug 23 6B273 Camshaft Oil Flow Control Rod 24 6K292 Camshaft Front Seal 25 6256 Camshaft Sprocket 26 6278 Camshaft Sprocket Washer 27 6K252 Camshaft Sprocket Retaining Bolt 28 6L269 Camshaft Sprocket Key (5 x 18) 29 6250 Camshaft 30 6051 Head Gasket 31 6A008 Cylinder Head to Block Dowel 32 6010 Cylinder Block 33 6507 Intake Valve 34 6505 Exhaust Valve 35 6049 Cylinder Head 36 — Intake Manifold Stud (7 Req'd) 37 17A084 Engine Lifting Eye 38 — Engine Lifting Eye Bolt (2 Req'd) 39 9439 Intake Manifold Gasket 40 — Bolt 41 9723 Accelerator Cable Bracket 42 9424 Intake Manifold 43 — Intake Manifold Nut (7 Req'd) 44 9D476 EGR Valve Gasket 45 — Exhaust Gas Recirculation (EGR) Valve Bolt (2 Req'd) 46 9D475 EGR Valve 47 — Fuel Injection Supply Manifold Bolt
    (2 Req'd) 48 9F593 Fuel Injector 49 9D930 Fuel Charging Wiring 50 6786 Oil Level Indicator Tube Bracket 51 — Oil Level Indicator Tube Bracket Bolt 52 6754 Oil Level Indicator Tube 53 6750 Oil Level Dipstick 54 9D280 Fuel Injection Supply Manifold 55 — Vacuum Fitting 56 9E498 Main Emission Vacuum Control Connector 57 — Vacuum Tap 58 — Vacuum Hose 59 9B989 Throttle Position Sensor 60 — Screw and Washer 61 9F782 Throttle Position Sensor Gasket 62 — Throttle Body Bolt (4 Req'd) 63 — Idle Air Control (IAC) Valve Bolt
    (2 Req'd) 64 9F715 Idle Air Control Valve 65 9F670 Idle Air Control Gasket 66 9E926 Throttle Body 67 9E936 Throttle Body Gasket 68 — Vacuum Fitting 69 — Camshaft Position Sensor Screw 70 6B288 Camshaft Position Sensor 71 8255 Water Hose Connection Gasket 72 — Water Hose Connection Bolt (3 Req'd) 73 8592 Water Hose Connection 74 8575 Water Thermostat 75 6065 Cylinder Head Bolts 76 6500 Valve Tappet 77 6K512 Valve Tappet Guide Plate 78 6564 Rocker Arm 79 6A528 Rocker Arm Seat 80 6A527 Rocker Arm Bolt (8 Req'd) 81 — Ignition Coil Mounting Bracket Bolt
    (3 Req'd) 82 18827 Noise Filter Condenser 83 — Ignition Coil Mounting Bolt (4 Req'd) 84 12259 Spark Plug Wire Set 85 12029 Ignition Coil 86 12043 Ignition Coil Mounting Bracket A — Tighten to 5-12 Nm (4-9 Lb-Ft) B — Tighten to 5-7 Nm (3-5 Lb-Ft) C — Tighten to 21-26 Nm (16-19 Lb-Ft) D — Tighten to 2-10 Nm (1.5-7 Lb-Ft) E — Tighten to 8-13 Nm (6-9 Lb-Ft) F — Tighten to 40-55 Nm (30-41 Lb-Ft) G — Tighten to 16-20 Nm (12-15 Lb-Ft) H — Tighten to 20-30 Nm (15-22 Lb-Ft) I — Tighten to 8-10 Nm (6-8 Lb-Ft) J — Tighten to 8-11 Nm (6-9 Lb-Ft) K — Tighten to 23-30 Nm (17-22 Lb-Ft) L — Tighten to 20-40 Nm (15-30 Lb-Ft) M — Tighten to 4.5-7 Nm (3-5 Lb-Ft) N — Tighten to 18-26 Nm (13-19 Lb-Ft)

    Feb 24, 2009 | 1995 Ford Escort

    Not finding what you are looking for?
    Cars & Trucks Logo

    Related Topics:

    38 people viewed this question

    Ask a Question

    Usually answered in minutes!

    Top Jeep Experts

    yadayada
    yadayada

    Level 3 Expert

    75822 Answers

    Colin Stickland
    Colin Stickland

    Level 3 Expert

    22156 Answers

    Kevin Daniels

    Level 3 Expert

    1455 Answers

    Are you a Jeep Expert? Answer questions, earn points and help others

    Answer questions

    Manuals & User Guides

    Loading...