Question about 2000 Suzuki VL 1500 Intruder LC

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Racing idle When stopped, the engine races. It happens in neutral and first gear. Normally, if I goose the throttle a little or let up on the clutch in first gear it stops. Is this a fuel or clutch problem...or neither?

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This is an air problem. You have an air leak(s) between the carb(s) and the cylinder. This leans the fuel mix and causes the racing problem. Rubber / plastic seals, "o" rings and manifold ducts get old and cracked and just don't seal well at the clamps any more.

Posted on Jun 30, 2009

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1 Answer

Revs high when i change gear


Is it possible the clutch pedal is interfering with the throttle? Start the engine in neutral and allow it to idle. Press only the clutch pedal down and see if this increase the engine speed. If it does speed up the engine and slows back down when you release the clutch then somehow this operation is where your fault lies. If it doesn't alter the idle speed, then rev your engine and release the throttle to see if it returns to idle immediately. If it is slow to return to idle then your throttle cable could be sticking. This means when you change gear lifting off the throttle has little effect and depressing the clutch to change gear causes the engine to race as the throttle is still partially open.

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Rpm goes 5000 after running a few miles


OMG, its got the Toyota Disease. next is Medial and lawyers.

i think you mean to post with foot off the the throttle, in say DRIVE
the engine races to 5000 RPM , total idle failure,
bad idle controls,
bad idle can happen on any car and can be caused by 2 things.
and is dangerous, (you can cut the key to stop any engine)

1: the throttle is really stuck. check the linkage end to end.
2: the IDLE control valve, ISC is stuck open. clean or replace it.

the cars ECU does all it can to prevent this, but can not help
if there are hard failures. ISC or throttle linkages failure.
there is a throttle return spring too, that can break (very rare)
the throttle bore can get so dirty that it can stick open.
on some cars, NO ENGINE STATE
Speed density engines, (MAP) will race for ANY VACUUM air leaks
to the intake plenum , (cracked hoses, etc)

Jun 14, 2014 | 1995 Cadillac Eldorado

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Gas pedal gets stuck and keeps the car going cant stop without turning the car off


dont drive it. find the cause and fix it now.
Hot and cold engine or BOTH>?
1995 Tracker, no tranny , no 4wd , on engine options stated.
Exact high RPM in neutral, not stated...... 1500 is normal cold.
keeps going in Neutral. (nah , you have 5 ways to stop any car.
key, hand brake, foot brake and neutral. and with 4wd, 1 more neutral.
keep that in mind driving any car.
this car has up to 3 throttle cables that can stick. and more!

1: floor mats hit the pedal>? ala. Toyota style (lawsuits)
2: the three cables are, throttle. , cruise and A/T transmission kick down cable. if car is M/T and no cruise it has 1 cable.
so disconnect it, throttle fixed? (disconn,. 1 by 1, bingo?

no cure?, then its not the pedal , you meant just high idle.
yes, replace the cable or bad parts three.
ok say its not the cables.. (tests proved that)
the 95 came with 2 engines, 8valves and 16valves,
they work differently (8v love so race, 16v loves to stall)

1: ISC Stuck open, common.
2: 8v, any air leaks at all , will cause super high idle speeds.
3: throttle valve in the throttle body is stuckopen (gunk) or the return spring broken (very very rare the latter,in fact never heard of one breaking)
4: IAC (thermal idle control stuck open ,(my 97 was). and lots more.
5: on the 16v it takes 2 failures. to make high idle.
gross rich running engine (cold engine its normal) and any air leak
once hot the engine can not race unless there is huge overfueling
and an air leak.
6: the 8v has this device on the side of the throttle body.
called a dash pot. its just a fast idle vacuum servo.
if stuck open the engine will scream full time....
7: ECU stuck in limphome, can cause too high idle speeds.

we need to know which engine
http://www.fixkick.com/find-parts.html
8v or 16v first.
then does the idle race hot or cold or both (engine temperatures)
if it races , then how fast?, RPM the dash tachometer tells you that.

it can be as simple as a 50cent hose cracked.
to a dead ISC. (idle speed control) IAC is thermal idle air controller.
the IAC must be closed on a hot engine,
if the the engine never gets hot,it will scream full time.

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Try cleaning out the throttle body,just use some carb cleaner..

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1 Answer

My SUV is choking and it hesitates


which engine? 2L I4 or 2.5L V6?
chocking, it bogs full time.
total loss of power at all times? any speed, any hill, any gear.
is this a A/T or M/T car, the A/T can slip. easy
does the engine lack power, or does the tranny slip.
slipping is easy to discover, the RPM of the engine rise fast
but you go now where fast.
bogging can happen in many modes. (all or just 1: pick one)
all permutations
1: hot engine?
2: cold or both.?
3: wont race even in neutral, but idles ok. at 800 rpm.?
4: only with a fast right foot,called tip in throttle. but recovers.!
5: lost power at all driving loads, and worse on hills.?
6: all the above.?
in a real shop, i drive it and in a few minutes all the above is seen and vastly more, that is why online help is so bad, (me too)
no inputs. = wild guessing.....
heck i even notice things like?
dash volt meter dropping. below 14v at any time running.
overheating
CEL glowing or worse flashing (USA feature , OP never said)
old noises and vibration.
clutch slipping or A/T slipping.
Scan tool connected, and seeing pending codes, or any odd PID behaviors.
bad idle speed, idle speeds not controlled correctly.
and 100 more things, Ill stop here, it's a complex machine.

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2 Answers

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check the throttle position sensor. that should be whats wrong.

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1 Answer

Engine races in ALL gears. 1997 Honda Passport 4WD


My gas petal used to stick on the jeep so i spray up in there on the petal to stop it from sticking ore the brake light woud stay on becuse petal got stuck try some WD40 just dont sray on your petal ok might work

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make sure throttle linkage isn't pulling a little,try pushing throttle lever fwd and see if it drops down when it's racing if ok try mass airflow ,gm had problems with them,give it a hard tapping when its acting up and see if it clears out,dead giveaway

May 06, 2009 | 1995 Buick LeSabre

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