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From your description I don't know if replacing the throttle body is necessary. Replacing the engine (Long block) does require the throttle body to be removed from the old engine and installed onto the new. The housing is aluminum. Because of its age I would highly recommend rebuilding the unit before installing. If the engine is still running I would observe injector spray patterns and check for leaks. If the there is any doubt or question then price out both injectors and seal kit. If the rebuild goes wrong then a new throttle body would be needed. Another way you are protecting your investment. Any questions please feel free to write back. Good luck.
Usually dirty or bad throttle body. You need a scan tool to perform a throttle body relearn after cleaning or replacement. If you don't have a scan tool, don't do this one yourself. P2101 P2110 P2112 Jeep Ricks Free Auto Repair Advice
Yes its that easy, just make sure you engage the notch on it to the throttle body shaft. You may have to roll it past the screw holes to engage the notch. Then holding it in place on the throttle body, just roll it back to where the holes line up for the screws. Do not over tighten the screws
If the compression is not right, it could be the timing belt. If you have compression and spark to the plugs, it should start on carb cleaner sprayed into the throttle body.
Idle Air Control Valve Pintle may be bad
If you disconnect the IAC and the problem ceases it can point to this being the problem.:
Removal & Installation3.5L EngineTo Remove:
Before servicing the vehicle, refer to the precautions in the beginning of this section.
Remove the fuel injector sight shield.
Drain the cooling system.
Remove or disconnect the following:
The air cleaner intake duct.
Figure of IAC and TPS electrical connectors disconnected.
The idle air control (IAC) valve and throttle position (TP) sensor electrical connectors.
Figure of cruise control and throttle control cables removed from throttle lever.
The cruise control cable and throttle control cable from the throttle body lever.
The fuel pressure regulator vacuum hose, positive crankcase ventilation (PCV) hose and the throttle body vacuum port hose.
The throttle body coolant hoses.
The throttle control cable bracket, leaving the throttle and cruise cables connected.
The upper nut holding the throttle body to the intake manifold.
The throttle body assembly.
Clean the gasket mating surfaces.
To Install:
Install a new gasket and new studs if necessary.
Install or connect the following:
The throttle body assembly.
Start the top nut by hand.
The throttle body coolant hoses.
Position the throttle control cable bracket and hand start the retaining nuts and bolt.
Torque the three throttle body retaining nuts to 89 in.lbs. (10 Nm). And the bracket retaining bolt to 115 in.lbs. (13 Nm).
The throttle body vacuum port hose, PCV valve hose and the fuel pressure regulator hose.
The throttle control and cruise control cables to the throttle body lever.
The IAC valve and TP sensor electrical connectors.
Before servicing the vehicle, refer to the precautions in the beginning of this section.
Relieve the fuel system pressure.
Remove or disconnect the following:
Negative battery cable.
The Mass Air Flow (MAF) sensor electrical connector.
The air cleaner intake duct.
The PCV valve fresh air tube.
Figure of cruise control cable removed from throttle cable bracket.
The cruise control cable and throttle control cable from the bracket.
The cruise control cable and throttle control cable from throttle body lever.
Figure of IAC valve and TPS connectors removed.
The idle air control (IAC) valve and throttle position (TP) sensor electrical connectors.
Figure of fuel lines removed from retainer on throttle cable bracket.
The fuel feed and return lines from the retainer on the throttle control cable bracket.
The transaxle shift cable clip from the throttle control cable bracket.
Figure of throttle body removed from water crossover.
The throttle body from the water crossover.
To Install: NOTE: The Mass Air Flow (MAF) sensor inlet and the outlet of the air cleaner assembly must line up when installed. Misalignment may cause MIL illumination or driveability concerns.
Install or connect the following.
The throttle body to the water crossover. Torque the bolts to 106 in.lbs. (12 Nm).
The IAC valve and TP sensor electrical connectors.
The throttle and cruise control cables to the throttle body lever.
The throttle and cruise control cables to the throttle control cable bracket. The transaxle shift cable clip to the throttle control cable bracket.
The fuel feed and return line retainer to the throttle control cable bracket.
The MAF sensor electrical connector.
The air cleaner intake duct clamp. Torque the clamp to 27 in.lbs. (3Nm).
The PCV valve fresh air tube.
The fuel injector sight shield. Torque the nuts to 20 in.lbs. (2.3 Nm).
Disconnect the negative battery cable, then drain cooling system into a suitable container.
Detach the heater inlet and throttle body heater hoses from water outlet. If accessible at this time, disconnect the upper radiator hose from the water outlet.
Remove the exhaust manifold. For details, please refer to the procedure located in this section.
Remove the intake (camshaft housing for SOHC) and exhaust (DOHC only) camshaft housings.
Unfasten the oil fill tube bolt/screw then remove the oil fill cap and level indicator assembly. Pull the oil fill tube upward to unseat from block.
Label and disengage the injector harness electrical connector.
Detach the throttle body-to-air intake duct.
Tag and disconnect the power brake vacuum hose from the throttle body.
Remove the throttle cable bracket.
Remove the throttle body from the intake manifold with the electrical harness and throttle cable attached and position the assembly aside.
Tag and disconnect the MAP sensor vacuum hose from the intake manifold, then remove the intake manifold brace.
Detach the electrical connectors from the MAP sensor, IAT sensor and the EVAP canister purge solenoid.
If not already done, detach the upper (inlet) radiator hose from the water outlet.
Disengage the coolant temperature sensor connector(s).
Unfasten the cylinder head bolts in reverse order of the installation sequence shown in the accompanying figures.
Lift the cylinder head from the engine block. Remove and discard the gasket. Inspect the oil flow check valve for freedom of movement.
Using a suitable solvent, thoroughly clean and dry all bolts, bolt holes and mating surfaces. Inspect the head bolts for any damage and replace, if necessary. If using a scraper to clean the old gasket material from the mating surfaces, use only a plastic or wood one, NOT a metal scraper. Do NOT allow any debris to fall into the engine!
To install:
Place a new cylinder head gasket on the cylinder block, then carefully position the cylinder head in place.
Sparingly coat the head bolt threads with clean engine oil, then allow the oil to drain off before installing.
On 1988-89 engines, install and tighten the cylinder head bolts, in sequence, as follows:
Step 1 - Tighten all head bolts in sequence to 26 ft. lbs. (35 Nm)
Step 2 - Using a torque angle meter, tighten the short bolts an additional 80°and the long bolts an additional 90°in sequence
Fig. 5: Cylinder head bolt tightening sequence - 1988-89 2.3L engine
On 1990-91 engines, tighten the cylinder head bolts, in sequence, as follows:
Step 1 - Tighten all head bolts in sequence to 26 ft. lbs. (35 Nm)
Step 2 - Using a torque angle meter, tighten the short bolts an additional 100°and the long bolts an additional 110°in sequence
Fig. 6: Cylinder head bolt tightening sequence - 1990-91 2.3L engine
On 1992 engines, tighten the cylinder head bolts, in sequence, as follows:
Step 1 - Tighten, in sequence, head bolts 1-6 to 26 ft. lbs. (35 Nm), 7-8 to 15 ft. lbs. (20 Nm) and 9-10 to 22 ft. lbs. (30 Nm).
Step 2 - Tighten all head bolts, in sequence, an additional 90°using J 36660 or equivalent
Step 3 - In sequence, loosen each bolt one turn, then immediately re-tighten to the specified torque
Step 4 - After completing step 3 on all 10 bolts, tighten each bolt, in sequence, an additional 90°
Fig. 7: Cylinder head bolt tightening sequence - 1992 2.3L engine
On 1993-95 vehicles, tighten the cylinder head bolts to the specifications shown in the accompanying figures.
Fig. 8: Cylinder head bolt tightening sequence and specifications - 1993 2.3L engine
Fig. 9: Cylinder head bolt tightening sequence and specifications - 1994-95 2.3L engine
Engage the coolant temperature sensor electrical connector(s).
Connect the upper radiator hose to the water outlet.
Install the intake manifold bracket.
Attach the following electrical connections: MAP sensor, IAT sensor, and the purge solenoid.
Using a new gasket, install the throttle body to the intake manifold.
Install the accelerator control cable bracket.
Connect the throttle body-to-air intake duct.
Install the oil fill tube and level indicator.
Install the camshaft housing(s).
Install the exhaust manifold. For details, please refer to the procedure located in this section.
Connect the heater inlet and throttle body heater hoses to the water outlet.
Fill all fluids to their proper levels.
Connect the battery cable, start the engine and check for leaks.
If the manifold was replaced, install or connect the following:
Vacuum source manifold.
Positive Crankcase Ventilation (PCV) valve.
Manifold Absolute Pressure (MAP) sensor.
Throttle body assembly.
Upper-to-lower intake manifold carrier gasket to the upper intake manifold.
Carefully place the upper intake manifold onto the lower intake manifold. Ensure that the alignment pins in the upper intake manifold align with the holes in the lower intake manifold.
NOTE: Apply thread lock compound, to the bolt threads before assembly.
Install or connect the following:
Upper intake manifold. Tighten the upper intake manifold bolts in sequence to 89 in lbs (10 Nm)
Accelerator and the cruise control cables with the bracket to the throttle body.
EVAP purge solenoid vacuum line to the throttle body.
Connect the electrical connectors to the following:
Mass Air Flow (MAF) sensor
Manifold Absolute Pressure (MAP) sensor
Idle Air Control (IAC) valve
Throttle Position (T/P) sensor
EVAP purge solenoid
Install or connect the following:
Throttle body upper support bracket bolt. Tighten the bolt to 89 in lbs (10 Nm)
EGR valve wiring harness heat shield, nut and the bolt. Tighten the nut and the bolt to 89 in lbs (10 Nm)
I dont know what you need a bolt pattern for exactly, usually you just need to locate the starter. Disconnect all the wires from it, noting their locations, and unbolt the bolts and it should come right out.
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