Question about 1998 Toyota Caldina GT-T

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Toyota Caldina GT-T choking and backfiring

I have a Toyota Caldina GTT and sometimes when I accelerate the car seems to have no power (It chokes) and sometimes backfires. What can I do? Someone suggested that I put fuel injector cleaner...

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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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Quickest starting point would be to interrogate the OBD system for any issues.
However as this will generall mean a trip to a dealer, you might like to try some basic (but quite often fruitfull areas) :
Pull the spark plugs and inspect them. If any are oily there may be a head gasket facture. They should all be similar in colour (usually greyish/brownish). If they are not the genuine Toyota/Denso units, replace them. No good checking the spark plug wires - Caldina GTTs don't have them ! But do inspect the COP units for broken pieces, cracks and tracking lines which will indicate that they've been arcing.
The 3SGTE engine is pretty reliable and trouble free, as long as it's serviced properly. If you don't service it by the book, and/or it hasn't had, and is overdue for a 100Km service do replace the spark plugs, air filter and fuel filter.
Check the air flow path hoses and clamps. In particular, check the large convoluted inlet hose to the turbo for perishing and cracks. In that hot engine environment, it develops leaks that cause rough running.
The Caldina GTT is full of electronics, so it's fairly necessary to be able to read the ODB error codes. This will help with diagnosis or point you in the direction of mechanical issues.
Rough running may also be casued by timing issues. As the GTT doesn't have a distributor this is all under the control of the ECU with inputs from both camshaft and crankshaft rotation sensors. Check the wiring for both of these. The OBD codes are your best friend for finding these sorts of issues.
Although fuel injection cleaner won't hurt, I doubt it will help. As long as you use good quality fuel of the correct octane rating, it much more likley to be a clogged fuel filter, especially if it's long overdue for a change.

Posted on Jan 01, 2013


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SOURCE: check engine light on

I had to do some digging to find this info: The code is P2716, which is a problem with the 'transmission pressure control solenoid D or it's circuit.' It is located on the transaxle valve body. There apparently is a technical service bulletin (TSB) # 1406 concerning this. If your Corolla is still under warranty, the dealer will fix it, which is, according to what I could find, replacement of the computer that controls the transmission. The bucking problem you described may have actually been a transmission shifting problem, a symptom of this code the cars computer threw. If you did get some debris drawn out of your gas tank due to the low level, the injector cleaner might help, but it has nothing to do with this code. I would recommend you have the fuel filter replaced (to address the low fuel tank, possible debris drawn into fuel line issue), and check w/ the dealer about the TSB, it covers '05 thru '07 Corollas.

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