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Toyota Service
Toyota Service, Toyota Expert
Category: Toyota
Satisfied Customers: 4818
Experience:  30+ Yrs of auto experience, Award Winning Svc. Manager; Just Answer Customer's Choice Award Winner
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Pickup is bogging down when ambient temperature is gh. is

Customer Question

pickup is bogging down when ambient temperature is high. is used on mail route. have spent 6300 on transmission, abs brakes, plugs and wires fuel flush that the dealer said it needed. still has same problem it had before all this money and parts and labor was thrown at it
Submitted: 12 months ago.
Category: Toyota
Expert:  Toyota Service replied 12 months ago.

If the computer is not throwing codes, you have a mechanical failure. This could be read via the scan tool, or mechanical gauges. In issues like this, indiscriminate replacement of parts that do not fix the issue is not the path to take by your repair service provider. AN accurate diagnosis, with the scan tool AND mechanical gauges (vacuum, fuel pressure, trans pressure, etc). I still think the air pumps could be to problem until somebody activates them manually and they pass the activation test. Even though scan tools help quite a bit, this particular case needs 'old school' diagnosis. One quick question: What brand, octane rating and methanol percentage fuel are you using?