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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
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 ...
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.
the problem if from the map sensor.. when you change it it will run rough and keep cutting off,, keep stating it back and reeving over and over as soon as it cuts off again keep repeating until the CPU gets calibrated with the new sensor and it starts idling smoothly..
you don't specify petrol or diesel ! If it's petrol (sorry gas ) I would suspect the A.I.C valve requires checking and possibly cleaning, this is the Automatic Idle Control valve, Usaully situated on the inlet manifold close to the throttle body, Cheers
replace the throttle postion sensor also pull catalitic converter and clean out if it's plugged. You can remove the idle adjust screw and reset it but i would have to give you full proceedure to do that so post here for more detailed information.
My Previa was doing the exact same thing and it turned out to be a LOT of carbon deposits in the connecting passage between the throttle body and EGR valve. It just needed cleaning. That little passageway tends to get clogged on Previas a lot.
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