Question about Suzuki Grand Vitara

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Suzuki grand vitara 2ltr td 2002 Lacking acceleration

Lack of accelaration, engine management light on, computer says throttle cable sensor? Had throttle cable replaced. Ocassionally the revs can rise even when the engine is just running but the common fault is it just had little exceleration and often goes faster when you lift your foot up off of the pedal! Confused!

Posted by Alison Short on

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lolthepcman

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  • 179 Answers

Lots of odd things can happen in fuel injected cars sometimes the reverse of what you may expect. typically a malfunctioning O2 sensor can affect adjustments to TIMING thus for same accelerator position engine revs can rise/fall or become unstable just because O2 sensor is duff. if O2 bad poor acceleration/easy stall is definitely likely due to fluctuation in timing. can also cause pinking. best to check OBD codes if you can. some do not cause engine light to show and if intermittent, are cleared if you disconnect battery. check air filter and replace. if its diesel though you must suspect fuel pressure too.

Posted on Dec 14, 2017

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5 Related Answers

localwonder

Michael Masters

  • 6784 Answers

SOURCE: throttle Pedal Position Sensor Switch A

its just a sensor. you do not have to replace the entire throttle body.

Posted on Mar 16, 2009

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Anonymous

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SOURCE: 2002 suzuki grand vitara brake warning goes on and off

Do you have a brake fluid accumulator(ABS)? If yes, the pistons/pulsing assembly are worn, and may need to be replaced.

If not, you may have a vacuum leak in the power booster (located on the firewall). Check all hose and clamps for a tight fit/cracks,etc. Vacuum leaks cause intermittent brake failure lights.

You may want to park the vehicle on a clean surface, pump the brakes a few times, and check for brake fluid leaks. If there is a leaking wheel cylinder (back brakes) , caliper (front brakes), or brake line, you will be able to see it.

Leaks cause pressure loss, and, thus, the brake warning light will illuminate.

Posted on Mar 26, 2009

Anonymous

  • 192 Answers

SOURCE: Engine revs up even when parked - Honda Odessey 2002

replace the idle air control valve.(on the bottom of the throttle body) may be easier to remove the throttle body and turn in upside down to remove the idle air control valve and hoses. be sure not to pinch the gasket. after u do that be sure to replace any coolant that may have came out. then, start the car, rev the car to 3000 rpms till the radiator fan comes on , then let the vehicle idle for 20 - 30 mins . the computer should relearn the idle. local honda dealer should have the valve in stock,

Posted on Apr 05, 2009

canbruce75

Bruce Canfield

  • 1776 Answers

SOURCE: engine management light on ,suzuki grand vitara 2

Take the car to an autoparts store and have them scan the computer for any fault codes stored. The check engine light is to alert you that the computer has noted a fault in one of the car's systems. Getting the codes will show what the computer has noted and curb the need for speculation. Most parts stores will perform the scan for free. Hope this helped and best wishes.

Posted on Sep 06, 2009

nohaironheed

Andy

  • 2 Answers

SOURCE: car repair manual for a 1997 suzuki vitara v6 2ltr petrol 24v

Haynes don't cover that engine. I've found a copy of the H25 engine manual which is similar to the H20 engine we have. If you search for SQ416 in google you'll find a copy you can buy or if you're lucky you'll find a free download somewhere like I did!! :-) It has helped me loads.

Posted on Dec 03, 2009

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This will need to be put on a scanner to see what sensor has flagged up.. The car will not be as efficient with this light on so get it checked asap.
Use a good local garage...listen to what they say. If it doesnt make sense, write it down and come back here with description.
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Lack of power


If your problems started from the day that you had the new throttle body installed, yes this may be your problem. I'll give you some checks that you may perform to check if it was installed properly.

1.Make sure that all the hoses were replaced and all hose clamps were tightened up properly, if it leaks air, your air flow sensor wont be able to read the correct air flow into the egine which leads to poor performance.

2. If it is second hand throttle body that was installed, move your throttle shaft where the accelerator cable is attached to, up and down. If there is a lot of movement you will have to replace it or get it re-bushed.

3.On the side of the throttle body is a black unit attached, this is your throttle position sensor. With the egine not running, move the throttle on the throttle body, you should hear a click sound (a micro switch inside this unit opens a circuit), if you do not hear a click sound it has been set up incorrectly. Loosen up the two bolts holding this unit to the throttle body and turn this unit in the opposite direction of the throttle to rev up the engine if it was running, then turn it in the same direction as if you would throttle the engine but do it slowly untill you can hear a click sound. As soon as it clicks hold it and tighten the lock bolts. Now test it and make sure as soon as you would accelerate it clicks, job done for this one.

Generally look for vacuum hoses that might not be connected or secured properly and or electrical connections that might not be in place.

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1 Answer

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Try these easy things...take off clean and reconnect the battery cables, take to Auto Zone for a FREE computer hook up. More than likely if the battery hook up doesn't work it's the oxygen sensor.

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