1993 Toyota Previa Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 1993 Toyota Previa
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1993 Toyota Previa ProblemsCheck Engine Light Due to Restricted EGR System
The EGR System tends to get restricted or blocked with carbon after 100,000- 125,000 miles which will cause an emissions test failure for NOX. If the EGR system is equipped with an EGR temperature sensor it will trigger a Check Engine Light for improper EGR flow. The repair is to clean out the EGR passages and the EGR Temperature sensor. Our technicians tell this repair is pretty straight forward and takes about 1-1.5 hours. It is also wise to verify the EGR system components i.e. the Transducer, EGR Valve and VSV Solenoid at this time.
A loss of power on the freeway may due to an internally leaking fuel pulsation dampener. This commonly occurs on higher mileage vehicles.
At higher mileages (125,000+) the mass air flow sensor may cause the vehicle to idle rough, run rich and even stall. It is recommended to replace the mass air flow sensor with a factory unit because the aftermarket units have very mixed results.
1993 Toyota Previa QuestionsMy 93 Previa is idling (really) high in P and N. And running poorly in general. (1 answer)
And sometimes in D it lags and surges. Or if I'm cruising at around 45-55 and let my foot off the pedal it seems to drag......like I'm slightly braking. This all began after I was having starter issues, which I've seemed to have fixed. Although the starter seems to stick a little s...
it's been sitting in same spot for about 2 weeks, makes a weird sound when i start it, white smoke coming from muffler, had a hard time starting it at first, now start right away, its kinda cold, sometimes it get super cold a night(weather)