1995 Toyota Previa idles too fast when engine is warm

Toyota Previa Questions - 93 toyota previa having white ...

www.cargurus.com > Questions > Toyota > Previa

CarGurusMar 17, 2013 - 93 toyota previa having white smoke while starting and stu-off while running on the road. ... Lift the cylinder head off the engine block and move to oneside. Remove the ... 1992 Toyota Previa 3 Dr LE Passenger Van ... was going down the road one day and it just shut off. it will turn over but wont crank.Missing: water

Rough idle, bad hesitation on acceleration, perfect idle with ...

repairpal.com > Questions > Toyota > Previa > 1994 Toyota Previa

1994 Toyota Previa Questions ... Idle is perfectly smooth for first 1 - 2 minutes after overnight cold start, before .... This may be because the throttle position sensor is signalling just off idle. .... My check engine light came on with PO-420 code. ... theengine was turning over under starter motor that would bring the engine to an ...

Re: Replacing a Previa head gasket. - ToyotaVanTech

www.toyotavantech.com > Forum > Technical Discussion > Toyota Previas

Dec 3, 2011 - 20 posts - ‎2 authors
Okay, so you've got a Toyota Previa with a blown head gasket. ... The next few pix are taken after dropping the engine out from the bottom using a ... You can see a definite path between the water jacket and the cylinder. ... I believe this was a result of #1blowing and over pressurizing the cooling system.

How to Change a Coolant Temperature Sensor - YouTube

? 26:00
https://www.youtube.com/watch?v=IXSp5ykI6po
Sep 16, 2012 - Uploaded by rehma6b0

either bad intake gasket ,warped or cracked intake manifold,cracked or warped head,or head gasket blown if u have access to a radiator pressure tester pressurize the system and use a mirror to try and pinpoint the exact location of leak

It could be the thermostat replac eto be sure but also check to make sure the cooling fan is coming on periodically observe engine idling after the motor warms up the fan should come on after 5 - 10 minutes idling if not replace either the fan relay or the coolant fan switch

The radiator or heater core might be plugged up, most likely the radiator.

it would cost somewhere around $1.200- to 2.000 dollars call around to different repair shop and see if you can find a good deal or someone who can do it on the side for you and try this website to see if your car is listed it www.autozone.com or pickup a haynes auto repair manual and you see its not hard to do.

Look the engine over and see if you can find any external leaks, change the thermostat and make sure that fan(s) are operating.
Check the oil for water...loosing that much, it has to show up somewhere. Blown headgasket usually puts oil in coolant or coolant in oil, causes an external leak from between head and block or goes out through the tailpipe as steam.
look carefully and you will find your problem!!

its normal it just a moisture in your piping which causing to smoke that way...but if the smoke still when normal driving you might check the reservoir for cloudy water instead of coolant in that case you may have a blown head gasket if you got luck but if no cylinder or head are crack..anyways do not worry about white smoke you must worry if you have black smoke

replace the idle sensor or the distributor is not degreed properly

I had a power problem, when cold idled just fine,when warm it would miss at idle, spudder on acceleration and sound just fine at higher rpm. found number three spark plug wire had burned through lower boot. Spark was firing to head at low idle. same wire burn twice with about 40000 mile between.