One or more oxygen sensors may fail resulting in illumination of the Check Engine Light.
Resources for the Repair and Maintenance of your 1999 Toyota Sienna
1999 Toyota Sienna
1999 Toyota Sienna Problems
The Check Engine Light may illuminate due to an evaporative emission (EVAP) system fault. Our technicians tell us these EVAP system faults can be difficult to diagnose but it is not uncommon to find a failed charcoal canister or a loose or worn gas cap.
The mass air flow sensor on higher mileage cars occasionally needs to be cleaned or replaced if sluggish acceleration is experienced or the Check Engine Light is illuminated with a mass air flow meter sensor fault code stored.
Sludge can build up in the engine because Toyota did not recommend frequent enough oil changes. Lexus will sometimes offer a discount on cleaning the engine if necessary. Owners who changed their oil every 3,000 miles did not experience these problems. This sludge build up can lead to excessive oil consumption.
1999 Toyota Sienna Recalls (Recent)
RepairPal Expert Overview:
Toyota is recalling 1998–2010 Sienna models manufactured or registered in twenty-two Eastern and Midwestern states because of problems with the spare tire carrier and assembly cable due to road salt corrosion. This may cause the spare tire assembly cable to break and the spare tire to separate from the vehicle, increasing the risk of a crash. Toyota will notify owners via letter with instructions on how to remedy the problem. For a list of the affected states, call Toyota at 1-800-331-4331.
Summary: EQUIPMENT DESCRIPTION: AFTERMARKET THEFT DETERRENT SYSTEMS USED ON 1998-1998 TOYOTA RAV4, AVALON, AND SIENNA MODEL VEHICLES DISTRIBUTED BY SOUTHEAST TOYOTA DISTRIBUTORS, INC. IN THE STATES OF ALABAMA, FLORIDA, GEORGIA, NORTH AND SOUTH CAROLINA. THE ALARM WIRING HARNESS PLUGS INTO THE VEHICLE'S IGNITION SWITCH AND THE VEHICLE'S IGNITION SWITCH WIRING HARNESS PLUGS INTO THE ALARM HARNESS TO COMPLETE THE CIRCUIT. A PERCENTAGE OF THE FEMALE TERMINALS USED IN THE ALARM CONNECTOR WERE FOUND TO BE DEFECTIVE, CAUSING AN "OPEN CIRCUIT" CONDITION WHEN MATED TO THE MALE IGNITION SWITCH TERMINALS.Learn more »
1999 Toyota Sienna Questions and Answers
my 99' toyota sienna's steeling wheel has a big play when you turn along a curve specially when you are driving fast.
Some people said it is the rack and pinion. Please advice.
Car just click when start. It will not turn over or start until the steering wheel is turned. What's wrong with it?
I have an indictor light that has been on for a couple of days, no one seems to know what it means. It is beside the ABS light, it looks like a tire with some type if "arrow" inside poin...
The driver side door opens fine from the inside, so I though the handle must be broken (like so many Sienna handles). But I took off the door panel and can the handle is working fine. It must be th...
1999 Toyota Sienna Reviews
We bought ours new in '99, and it handled beautifully then. Now, not too bad. brakes are good, heating and AC good. No problems at all with exhaust and emissions. 2 coils went bad, caused hesitation on cold days, and it took a very long time (over a year) to diagnose by 2 different mechanics. The drivers side window motor needed replaced: about $300. The tailgate door opener/handle cost 300 to replace, the right sliding door handle/opener cost about 150....these all not prompted by any abuse as we are quite easy and gentle with our vehicles. The steering hose had a nick in it and it cost 400 to replace! (I think this may have been one of those mechanic induced traumas.) I have fixed a lot on mine, and now it runs great. I think I will keep it until the engine dies out.
Had to have A/c system recharged at 70,000 miles, had problems with A/C again at 129,000. Still having problems at 188,000. Also have a slight oil leak now. Other than that its been a great running car. Would buy another one. Probably after 200,000 miles.