1992 toyota previa idles rough and Poor acceleration

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

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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 ...

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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.

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Toyota Celica Runs Very Poor ' Vaccum Leak and Map ...

www.dewitzdiagnosticsolutions.com/rough-running-1992-toyota-celica/
This 1992 Toyota Celica was one of them. This Toyota was ... Going down the road it wasn't to bad, but fell on its' face when accelerating. I then checked for

could be the head is cracked.
do you have smoke or steam coming out the exhaust?
how is the coolant level?
this engine WILL NOT tolerate running with out coolant.

most of the time when a timing belt goes it just goes and will not run i would look into a plugged cat converter on the exhaust

Hello. Welcome to FixYa. I am Toyota Ed; I will be assisting you today.

The differences 'side by side' are negligible. The main difference, one that you really cannot determine by the eye, is the size of the combustion chamber. On a supercharged Previa, the compression ratio is markedly lower, because of the supercharged air being sent into the engine. The combustion chamber on a supercharged engine is slightly larger, and the piston domes are shorter.

Note: All turbo and S/C engines have lower compression ratios than a normally asperated engine.

In short, putting a supercharged head on a normally asperated engine will give you very bad acceleration and drivability, due to the increased combustion chamber size. The lower compression of the S/C engine's head on a normal engine will have bad idle, poor acceleration, and bad hesitation.

To tell the difference, you need both variants of cylinder head, and measure the cubic centimeters of the combustion chambers with a liquid. The one that holds more volume is the S/C head.

Thanks for choosing FixYa for assistance today. I hope that my answer helpd you out.

Need the code make a diagnosis

need a better description mrs ,like does the steering wheel shake ,does the car wobble at slow speeds .Better still as this vehicle is over 10 yrs old trade it in on plan new and get 2000euros back against a new car

prolly sad shaft bushings 100 bucks on eBay and not to much expertise needed

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.