Question about 1998 Toyota Caldina GT-T
Please tell me what could be the problem as they replaced the exhaust sensor but the lights are still on?
The best solution is to have the OBD (on-board diagnostics) interrogated for faults using a tester. This should help pin-point the issue. Most dealers (Toyota or otherwise) should be able to do this.
As the OD drive is flashing, I would suspect that a transmission fault is indicated.
I do not think that the GT-T outputs transmission error codes via the OBD. However, you can place the vehicle ECU (the EFI/ATM computer) in a diagnostic mode and it will indicate, via pattern flashing of the Engine light fault codes that can point you in the right direction. There are only 9 fault codes for the ATM - all to do with the solenoids, switches and speed sensors used in that system.
Initially all these devices can all be checked reasonbly simply by a competent mechanic, although the ATM speed sensors would need removing to do so.
Information about placing the ECU in diagnostic mode, reading the codes and their interpretation is given in vehicle service information and is too extensive to outline here. A Toyota dealer or Toyota-savy mechanic should be able to do this for you unless you want to undertake it yourself.
BTW, an exhaust sensor would not cause both lights to flash. In fact it woudn't normally cause even the engine light to illuminate. There are two exhaust sensors on the GT-T so information from the OBD would be generally used to determine which one needs attention.
Posted on May 24, 2014
You can try taking the car to one of the commercial auto parts stores and the will usually diagnose the problem for free, using their handheld computer, giving you the solution.
Posted on May 15, 2014
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Posted on Jan 02, 2017
SOURCE: 1997 Toyota Caldina GT-T 3S-GTE
As you say the tacho/speedo come "back up to normal" after the incident, I assume that they either stop working or become erratic while the dash lights are misbehaving.
If so, this sounds like a dash wiring electrical problem.
The O/D OFF light is lit by the switch on the shifter (switch also inputs to the ECU). The ENGINE light is driven also from the ECU but the SLIP light is driven from the ABS/VSC computer, although these two computers do communicate.
Best plan of attack would be interrogate the ECU for error codes or ask a Toyota dealer to do so. At least you'll have some clue to any problems that the ECU's may have picked up.
Contact me about checking for ECU error codes if you want to attempt it yourself. Although the Caldina has an OBDC2 connector, as I understand it it's not 100% compliant, so you'll need a Toyota compatible reader. Fortunately teh codes are also output via the CHECK ENGINE light.
If there's no problems there, I'd be pulling the instrument cluster and checking for wiring problems. I'm not sure where in the world you are but most ex- JDM vehicles could have modified with timers, speed-cut or fuel-cut devices that either have been poorly installed or are playing up and causing electrical problems.
Posted on Oct 31, 2009
1998... I would change the spark plugs & wires, add in fuel injector cleaner, change fuel filter & air filter.
Could be many different things here.
Check the spark plugs for any sign of oil that would stop them from firing like they should.
Posted on Dec 06, 2012
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