Question about 1990 Suzuki GSX-R 750 L

5 Answers

1998 gsxr too much fuel

I have a 98 gsxr 750. I bought this used and they couldnt get it to start. I ajusted throttle bodies, tps,and installed new fuel lies and fuel pump. It starts right up now. It has so much fuel its spitting it out of the pipes and runs like ****. There is also no codes in computer. This is driving me nuts i have hours and hours trying to figure this out. Can anyone please help.

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Get the carb checked :
There are 4 basics changes:
1) Main jet
2) Needle
3) Pilot jet
4) Pilot screw
Check these components on the cab if the vehicle was left with gas for long time then thin film may build in carb use a carb cleaner spray to carb and then try to start ...

Good luck...



Posted on Feb 21, 2009

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Hi
Check the die vacuum pipe on the carbs. It might be connected to the overflow on the tank and not the tap resulting in the fuel to flow out .

Please revert for further clarifications.
Thanks Rylee

Posted on Feb 21, 2009

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Sounds like the fuel pressure is set to high .. you need to test that

Posted on Feb 21, 2009

  • Roberta Smith
    Roberta Smith Feb 21, 2009

    two places you are likely having the problem are float needle or vacuum diaphram

  • Roberta Smith
    Roberta Smith Feb 21, 2009

    i have the link for the service manual as well

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You may need to rebuild your throttle body or carb.

Posted on Feb 21, 2009

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  • Master
  • 547 Answers

Is there a ajust screw on pump or carb? if so ajust it?

Posted on Feb 21, 2009

  • albert getty
    albert getty Feb 21, 2009

    So which is it? Carb or Throttle Body?
    Throttle body is a single (sometimes 2) electronic fuel injectors mounted in a carburetor LOOKING device that sits on the intake manifold. A flooding throttle body injector system is caused by faulty electrical to the injector or more likely a sticking injector. If the problem isn't too severe yet, use some injector cleaner before you spend a lot of money.
    If it's a CARBURETOR, you have a sticking needle & seat or a damaged float inside the float bowl. It's a relatively simple job to rebuild the carburetor but if you have never done it before, you might want to just replace your carb with a rebuilt one.

  • albert getty
    albert getty Feb 21, 2009

    this should help you out thank you for useing fixya

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1 Answer

How to replace the TPS.


no engine option stated, and is key fact to know here.
eg:
The 5.7L V8 engine does not use a separate Throttle Position Sensor (TPS) on the throttle body.

remove old TPS, and bolt on new.
its like 2 or 3 screws. no big deal.
but needs to be calibrated per fsm.
ill take a wild guess, 3.7L
3.7L Engine and 4.7.
  1. Remove air resonator tube at throttle body.
  2. Disconnect TPS electrical connector.
  3. Remove two TPS mounting screws.
  4. Remove TPS.
install
The throttle shaft end of throttle body slides into a socket in TPS. The TPS must be installed so that it can be rotated a few degrees. (If sensor will not rotate, install sensor with throttle shaft on other side of socket tangs). The TPS will be under slight tension when rotated.
  1. Install TPS and retaining screws.
  2. Tighten screws to 60 inch lbs. (7 Nm) torque.
  3. Connect TPS electrical connector to TPS.
  4. Manually operate throttle (by hand) to check for any TPS binding before starting engine.
  5. Install air cleaner tube to throttle body.
some TPS need calibration
to see what yours needs, read the FSM
or at alldata.com
or here. I think all engines here, are TPS PCM autocalibrated.

read WJ car here
http://www.jeep4x4center.com/knowledge-base/index.htm?utm_source=cj#service

May 24, 2014 | 2005 Jeep Grand Cherokee

1 Answer

Where is the thorttleposition sensor on 2001jeep cherokee


The 3 wire Throttle Position Sensor (TPS) is mounted on the throttle body and is connected to the throttle blade.
The TPS is a 3wire variable resistor that provides the Powertrain Control Module (PCM) with an input signal (voltage) that represents the throttle blade position of the throttle body. The sensor is connected to the throttle blade shaft. As the position of the throttle blade changes, the resistance (output voltage) of the TPS changes.
The PCM supplies approximately 5 volts to the TPS. The TPS output voltage (input signal to the PCM) represents the throttle blade position. The PCM receives an input signal voltage from the TPS. This will vary in an approximate range of from .26 volts at minimum throttle opening (idle), to 4.49 volts at wide-open throttle. Along with inputs from other sensors, the PCM uses the TPS input to determine current engine operating conditions. In response to engine operating conditions, the PCM will adjust fuel injector pulse width and ignition timing.
The PCM needs to identify the actions and position of the throttle blade at all times. This information is needed to assist in performing the following calculations:

selectachapter.gif

Cherokee, Grand Cherokee, 1999-2005
Throttle Position Sensor

Print


Operation

The 3 wire Throttle Position Sensor (TPS) is mounted on the throttle body and is connected to the throttle blade.
The TPS is a 3wire variable resistor that provides the Powertrain Control Module (PCM) with an input signal (voltage) that represents the throttle blade position of the throttle body. The sensor is connected to the throttle blade shaft. As the position of the throttle blade changes, the resistance (output voltage) of the TPS changes.
The PCM supplies approximately 5 volts to the TPS. The TPS output voltage (input signal to the PCM) represents the throttle blade position. The PCM receives an input signal voltage from the TPS. This will vary in an approximate range of from .26 volts at minimum throttle opening (idle), to 4.49 volts at wide-open throttle. Along with inputs from other sensors, the PCM uses the TPS input to determine current engine operating conditions. In response to engine operating conditions, the PCM will adjust fuel injector pulse width and ignition timing.
The PCM needs to identify the actions and position of the throttle blade at all times. This information is needed to assist in performing the following calculations:


Ignition timing advance Fuel injection pulse-width Idle (learned value or minimum TPS) Off-idle (0.06 volt) Wide Open Throttle (WOT) open loop (2.608 volts above learned idle voltage) Deceleration fuel lean out Fuel cutoff during cranking at WOT (2.608 volts above learned idle voltage) A/C WOT cutoff (certain automatic transmissions only)


Removal & Installation

3.7L & 4.0L

  1. Disconnect TPS electrical connector.
  2. Remove TPS mounting screws.
  3. Remove TPS.

To Install:
The TPS is mounted to the throttle body. The throttle shaft end of throttle body slides into a socket in the TPS. The TPS must be installed so that it can be rotated a few degrees. (If sensor will not rotate, install sensor with throttle shaft on other side of socket tangs). The TPS will be under slight tension when rotated.
  1. Install TPS and retaining screws.
  2. Tighten screws to 7 Nm (60 inch lbs.) torque.
  3. Connect TPS electrical connector to TPS.
  4. Manually operate throttle (by hand) to check for any TPS binding before starting engine.

4.7L
  1. Remove air duct and air resonator box at throttle body.
  2. Disconnect TPS electrical connector.
  3. Remove two TPS mounting bolts (screws).
  4. Remove TPS from throttle body.

To Install:
The throttle shaft end of throttle body slides into a socket in TPS. The TPS must be installed so that it can be rotated a few degrees. If sensor will not rotate, install sensor with throttle shaft on other side of socket tangs. The TPS will be under slight tension when rotated.
  1. Install TPS and two retaining bolts.
  2. Tighten bolts to 7 Nm (60 inch lbs.) torque.
  3. Manually operate throttle control lever by hand to check for any binding of TPS.
  4. Connect TPS electrical connector to TPS.
  5. Install air duct/air box to throttle body.

Hope this helps

Dec 31, 2011 | 2001 Jeep Grand Cherokee

1 Answer

Where is the fuel sensor?


Jennifer,
Yes, that helps. The THROTTLE POSITION SENSOR is a black plastic device [abbreviation is TPS] mounted on the throttle body. It is held on with 2 screws and has a 3 wire electrical harness plugged into it. The easy way to locate the throttle body [in case your brother does not know] is to follow the black rubber tube which goes from the air cleaner to the engine. the aluminum device that rubber tube connects to, is the throttle body. There is another sensor called the IAC [Idle Air Control Valve] which also is attached to the throttle body. The IAC usually has 4 wires, rather than 3, going to it. That is the easiest way to differentiate it from the TPS [Throttle Position Sensor]
The TPS can be changed by unplugging the wiring connector and removing the two mounting screws. To further complicate the issue, Ford used two styles of TPS. One style has slotted holes for the two mounting screws. The slots are designed to allow the sensor to be adjusted. The second TPS design does not have slotted mounting holes in it. It can only go on one way, and is NOT adjustable. If your car has the style with slotted holes, you will need to use a computer scanner to read the voltage of that sensor [with the key on, engine off and gas pedal [aka throttle pedal] at idle. If the voltage for the TPS is between 0.9 and 1.1 volts, everything is OK. If the voltage is not within that tolerance, you must loosen the mounting screws and move the sensor in the slotted holes, to get the proper voltage reading.
If this is all to confusing for your brother, you will need to take the car to a professional mechanic.
Does your brother know if your engine has throttle body fuel injection or four individual fuel injectors? I ask, because that also makes a difference.

Nov 27, 2011 | 1998 Ford Escort

1 Answer

Where is the throttle positions sensor located


The Throttle Position Sensor, or TPS is connected to the throttle shaft on the throttle body.

zjlimited_2070.jpg

Fig. 2: Disengage the Throttle Position Sensor (TPS) wiring harness connector

According with the Grand Cherokee Repair Manual, check this removal & installation procedure...
(see Figures 5 and 6)
  1. Remove the air intake tube at the throttle body.
  2. Disengage the TPS wiring connector and remove the two mounting screws.
  3. Carefully remove the TPS from the throttle body.
To install:
  1. The throttle shaft end has a tang that can be fitted into the TPS two different ways. Only one of the installed positions is correct. When correctly positioned, the TPS can be rotated a few degrees. To determine correct positioning, place the TPS onto the throttle body with the throttle shaft tang on one side of the TPS socket. Verify that the TPS can be rotated. If the TPS cannot be rotated, place the TPS on the throttle body with the throttle shaft tang on the other side.
  2. Tighten the two TPS mounting bolts to 60 inch lbs. (7 Nm) and engage the wiring connector.
  3. Manually operate the throttle and check for any binding.
  4. Install the air intake tube.
zjlimited_2071.jpg

Fig. 5: Remove the throttle position sensor retainers...

zjlimited_2072.jpg

Fig. 6: ...then, remove the throttle position sensor

Additionally, its possible that you are interesting in some section about this repair manual: Jeep Grand Cherokee 1993-1998 (ZJ Series).

Hope this helps; just keep in mind that your feedback is important and I'll appreciate your time and consideration if you leave some testimonial comment. Thank you for using FixYa.

Jose.

Oct 20, 2011 | 1997 Jeep Grand Cherokee

1 Answer

How to adjust the TPS (throttle positioning sensor) on a 1998 Mitsubishi Montero?


just change the TPS sensor for a new one. It's an a electronic part and can't be ajust it

Oct 11, 2010 | 1999 Mitsubishi Montero

1 Answer

When i turn on heater or fan engine revs over 3000 rpm


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 & Installation 3.5L Engine To Remove:
  1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
  2. Remove the fuel injector sight shield.
  3. Drain the cooling system.
  4. Remove or disconnect the following:
    • The air cleaner intake duct. Figure of IAC and TPS electrical connectors disconnected. aurora_g1.gif

    • 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. aurora_g2.gif

    • 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.
  5. Clean the gasket mating surfaces.
To Install:
  1. Install a new gasket and new studs if necessary.
  2. 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.
    • The air intake duct.
  3. Refill the cooling system.
  4. Install the fuel injector sight shield.
4.0L Engine To Remove:
  1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
  2. Relieve the fuel system pressure.
  3. 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. aurora_g3.gif

    • 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. aurora_g4.gif

    • The idle air control (IAC) valve and throttle position (TP) sensor electrical connectors. Figure of fuel lines removed from retainer on throttle cable bracket. aurora_g5.gif

    • 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. aurora_g6.gif

    • 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.
  1. 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).
  2. Install the negative battery cable.
  3. Pressurize the fuel system and verify no leaks.
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Oct 07, 2010 | 2001 Oldsmobile Alero

1 Answer

Where is the carb on a jeep grand cherokee 1993 4.0 liter


There is no carburetor on any of the 6 cylinder or 8 cylinder Jeep Grand Cherokees. They have Fuel Injection and a throttle body which looks like a carburetor scaled down.

---
Instructions on how to remove and replace the throttle body follow:

Throttle Body REMOVAL & INSTALLATION
  1. Disconnect the negative battery cable.
  2. Remove the vacuum hoses from upper bonnet, unfasten the retaining clips and remove the upper bonnet assembly.
  3. Remove the lower bonnet retaining bolts and lower bonnet.
  4. Remove the throttle cable and the return spring.
  5. Disengage the wire harness connector from the injector.
  6. Disengage the wire harness connector from the WOT switch, ISA motor and TPS.
  7. Disconnect the fuel supply and return lines from the throttle body.
  8. Tag and disengage the vacuum hoses from the throttle body assembly.
  9. Disengage the potentiometer wire connector.
  10. Loosen throttle body retaining bolts and remove throttle body assembly from the intake manifold. To install:
  11. Clean the intake manifold and throttle body mating surfaces of old gasket material.
  12. Install a new gasket and the throttle body assembly. Tighten the mounting bolts to 16 ft. lbs. (21 Nm).
  13. Engage the potentiometer wire connector.
  14. Engage the vacuum hoses to the throttle body.
  15. Engage the fuel lines to the throttle body.
  16. Engage the WOT switch, ISA motor, TPS, and injector electrical connections.
  17. Install the return spring and throttle cable.
  18. Install the lower bonnet and fasten the retainers.
  19. Install the upper bonnet assembly, retaining clips and vacuum hoses.
  20. Connect the negative battery cable.
  21. Start the vehicle and check for fuel leaks. Fig. 1: Exploded view of the throttle body and related components 86745g41.gif
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Aug 17, 2010 | 1993 Jeep Grand Cherokee

2 Answers

After a while of riding bike doest go over 5500rpm


NORMALLY HIGH REVING ITS BAD SPARK PLUG CHECK THE TUNE UP PIERRE

Jan 10, 2009 | 1998 Suzuki GSX-R 750 W

1 Answer

TPS in a 1998 GMC Jimmy


the tps is ususally at the side of the throttle body opposite where the throttle cable / tv cable mount.
sometimes it won't start, run, or run erratically. there are ways of testing this unit (by output voltage) before you commit to buying a new one. to test it you will need a dvom (digital volt ohm meter).

just a note: straight from the book... "a broken or loose tps can cause intermitten burst of fuel from the injector and an unstable idle because the ecm thinks the throttle is moving."

Sep 22, 2008 | 1998 GMC Jimmy

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