Question about 1989 Honda Civic

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Engine periodically "races" mostly while idling or neutral

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The idle surges if this is the case take out the air intake tube that leads to the throttle body, get a can of carburetor fluid and spray around the throttle body. You will need someone to start the car and hold the gas peddle to 2500 rpm while you do this the car will shut of when you do this, restart the car and repeat the process until half of the can is used up. Now check your antifreeze level fill if needed.

Posted on Nov 17, 2009

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Truck idles very high when starting


how cold is cold???? In Alaska or Key west?
tell location and bingo, i know. but didnt
all engines race cold for sure EPA regulated ones.
and race faster the colder it is

what is RPM see dash, see dash rpm gauge called the
tachometer, use that to answer
or if no tacho there, ill never know here in the cloud.

no engines size stated


its 85f here.
2000 RPM is easy cold.
here about 1500 cold (85f) but drops fast say 5min.

Dec 25, 2015 | 2002 Suzuki XL-7

1 Answer

WHAT WOULD MAKE MY CAR ENGINE WANT TO RACE FORWARD


A few possibilities:
  1. Defective throttle position sensor (TPS);
  2. Bad idle bypass circuit or idle circuit solenoid;
  3. Cracked intake manifold, throttle body assembly, or bad throttle body gasket (most likely);
  4. Serious vacuum leak somewhere.

Aug 02, 2014 | 2002 Buick LeSabre

1 Answer

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.

Feb 13, 2014 | 1995 Geo Tracker

1 Answer

Engine racing


time to join the toyota death club.?.. LOL !!!!
eg; floor mats hitting throttle???? nah, nobody is that daft.
which engine options?
1.3 L M13A I4 (petrol)?
1.5 L M15A I4 (petrol)?
1.3 L I4 (diesel)?

but is ok, parked, with trans in neutral??????????
the normal RPM is about 800 hot.
not the word hot, it must be. it must be hot, 180F min. holding
hot. does it? we use a $9 scan tool to scan the ecu
and look at the ECT, does it show, 180F?
like this shows. driving dead cold the engine, warms, see it?
http://www.fixkick.com/my96-16v/TP-MAF-VSS-ECT-FUEL.JPG
the blue line, that is ECT, engine coolant temp sensor.......?
ok we got past rule one, and all fuse are good, we check.

The ECU (EFI BRAIN) in your car controls idle at all times.
GAS ENGINES, diesel we dont have here, in 2005 USA.
in your case, (hot) it does not, so can be only 2 things.
1: the ISC is messed up. (stuck open, so clean it.)
or
2: the EFI fueling is bad, causing #1.
the EFI controls might go rich or lean, and there can be air leaks in to the air intake system, (induction) on MAP engines, it races fast.
on MAF engines, it goes lean and idles slower.
i have no idea what system you have as my on line source skips 2005

what country?
is the CEL glowing key on?> check engine lamp
then stays out running>>>>>?????
do you have a maf sensor on the main air pipe? some are hidden in the throttle body. on some suz.
i believe this car is MAF based, (with map used for EGR tests only)
on very new cars, the MAF can fail, and the ECU is so smart
it can start using the MAP as backup,
or on some newer cars, it uses both , map works best at idle.
most mAF do a poor job at air flow reading at idle, (touch)
that is whats out there......
what does all this mean, simple
you start the engine, the CEL stays glowing, scan it.
you scan it and find the MAF is dead./ engine is in limphome
and in limphome mode idle controls can be DEAD>
ok CEL is out
engine hot, EFI is in CLOSED loop at idle and LTFT is like -4%
long term fuel trim. looks good, so if idle is wrong
the ISC is BUNGED

see what i did there , i used a $9 scan tool to tell me
the EFI fueling is good. so the ISC is bad.
the ISC can be 1 to 3 parts. (iac/iSC parts)
if any stick , it races. or stalls , depends on where is stuck
its just and air valve.
on MAF systems the ISC uses metered air and fuel is mixed perfect
so if it sticks open fueling is perfect and idle is RACING.
that is how EFI works. (fuel,idle, not spark)

i found what you had on the swift forum..... no lack of info there.

random page
http://www.teamswift.net/viewtopic.php?f=11&t=49725

most the questions answered this page are wrong cept last.
the maf on your car has extra capacity, so a bigger one does NOTHING. and the closed loop , will cancel the kids fiddling .
they dont understand EFI.
read

Greg Banish books to see how

all the bits work together. including how hard it is to get idle controls to
work right, its the last thing that does,,,,, work right.
ifcar has MAP total system (speed density ) most of my comments above are bunk,,,,
on SD systems, all air leaks, cause RACING ! apples and oranges different. they are...
to work efi , you need to first know what is there.....

Jan 22, 2014 | 2005 Suzuki Swift

1 Answer

My Nissan sentra fn15 with a ga15 engine, the rev counter does not change with rpm increase, drive car for 10 mins it slowly goes to 5-600 rpm, it also stalls sometimes, are they related


WHAT YEAR? CAR.
the engine tachometer reads what.
that whole post is a contradiction.
ahh, you mean the engine does not accelerate, or the engine bogs.
600 RPM is why below, 800 normal (most cars)
the engine stalls, well sure it will as low idle speed will surely do.
so the real post is my engine stalls.
and if i try WOT ,it will go above 600 rpm in or out of gear?
wot means wide open throttle.
can the engine race to 3000RPM in PARK (or neutral)
if engine power is ok, full WOT power up a hill and is only and idle problem say some. and we work bad idle.

the top reason for stalls (besides #1 never ever doing the 60k mile service,repeats at every 60k)_
is a stuck open EGR (part of same service to do that but Ill add that)
or stuck closed ISC (electric IAC)

Oct 16, 2013 | Cars & Trucks

1 Answer

Eceleration in neutro


car moves faster when A/T (is it A/T) is shifted to Neutral?
yes, (then you are going down hill?)
if gear shift linkage is maladjusted that would cause neutral to fail. (A/T)
A/T = automatic transmissin.
or are you saying the engine races (illegal idle speeds ) in neutral.
to get help, be clear on driving modes.
or ask your mechanic.

Feb 18, 2013 | 1992 Suzuki Swift

1 Answer

The tachometer shows 900 RPM on idle position but as i put the car in gear and release the clutch the RPM drops and u have to race the car manually through accelerator pedal.recomend the diagnostics a


The engine does not need to be raced when cold

The vehicles computer will adjust the idle according
to how the manufacture programmed it

After about one mine or so, the idle on most vehicles
comes down to approx 750RPM, generically speaking

When you put the car in gear,assuming it is an automatic,
the rpm will drop a 100 at most & may be adjusted by the
computer, just as it does when you put the A/C on. That is
to compensate for the change in engine load

You should be waiting for the rpm to come down to 650 to
800 & then a couple more minutes for some temp to come
up, before driving off. In cold weather wait at least 5 min or more

I think your vehicle is not working correctly, or you not explaining
it in a way I understand what answer you want

Sep 04, 2012 | Toyota Cars & Trucks

1 Answer

When in neutral idle surges


what kind of car? possibly a coolant sensor

Jan 04, 2012 | BMW X3 Series Cars & Trucks

1 Answer

Engine racing, will not idle. Not a stuck throotle


the trottle position sensor is the most likely problem,this is fairly common.if that is not the case the you likely need to repair leeks in the intake,base of throttlebody usually.

Sep 30, 2009 | 1999 Cadillac Eldorado

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

Jul 18, 2009 | 1997 Honda Passport

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