No Downshift Under Acceleration - MAP and TPS Codes but Probably ECU?

??? Link ???

Unfortunately, I don’t know very much about it. I mentioned it here:

@b16da9 Can you chime in? I don’t know whether they handle automatics though.

So I am still completely sure you have a TCM in your car.

When you get your ECU back, plug it back in, locate your TCM and check the troubleshooting LED and cluster lights.

And lastly, regarding your TPS, follow the factory diagnostic flowchart.

Great info. Thank you! I have already pretty much run down the testing on pages 11-72 and 11-73 which leads to ECM issue. (I also have a simultaneous issue with the MAP sensor.) What year/model Integra is this info for? I notice there are side-by-side S3 and S4 dash indicators shown whereas my car has a single S3 light. Would this make any difference?

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What? You don’t have S3/S4 ? Please post a pic of your instrument cluster and your gear shifter side that shows the thumb button for S3/S4.

This manual is for a '93 but applies to '90-'93 integras. I don’t know of an auto 2nd gen without the S3/S4 side by side lights in the cluster.

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I feel really dumb. Of course it has both S3 and S4 indicators. I’ve had this car for 17 years.

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Sounds like you need to use those S3/S4 gears more often!