What might be causing No Power under load

Asked by yeswedeliver Apr 10, 2018 at 08:46 PM about the 1989 Toyota Camry LE V6

Question type: Maintenance & Repair

It idles fine, and I can rev the engine in park and just a slight hesitation. But when in drive under load, it cannot accelerate smoothly. If you don't have to go up a hill, you can slowly get the RPM's up high enough to go.

So here is what I have done.

- Looked for any cracked/broken vacuum lines.
- Removed the catalytic converter. Ran without the converter up the road, still had little acceleration. Checked for blockage, none. Put the converter back on.
- Changed the fuel filter.
- Changed the front 3 spark plugs, worn - large gap.
- Changed the front 3 plug wires.
- Changed the distributor cap. (contacts were corroded).
- Checked the Air Flow meter, readings seemed to be fine.
- Checked the Throttle Position Sensor, seemed fine. Changed it with a new one (frustration), it did not help.
- Removed vacuum line from the EGR value, did not see any difference.

Ordered a gasket so I can take the air intake off, to get to the back 3 plugs and wires.
NOW  - I just tried it and it ran fine, until it warmed up (just a mile or 2).
Grateful, thank you in advance for your time and help

6 Answers
21,980

Tony answered 6 years ago

Are there any warning lights on when the engine is running. Have you tried to Flash for Trouble Codes?

Mark helpful

yeswedeliver answered 6 years ago

...thank and no, no warning lights. As for 'Flash' for Trouble Codes - it occurred to me - but frankly I didn't know an '89 would have the system [odc]. Surely, this seems my next sensible action if such ability exists. Thanks for taking the time to help.

Mark helpful
21,980

Tony answered 6 years ago

See if you have this connector under the Hood...driver side.

Mark helpful

yeswedeliver answered 6 years ago

Thank you again - will check if the connector is there; the car is not near me - a friend is working on it many miles from here - and was waiting for time, weather ... I will post how it all turns out and why - when I know more ../ or its finished.

Mark helpful

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