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!

Yeah! Got my ECU back from the repair outfit. Included were photos showing 5V from pins 19 and 20. The car now “kick-down” shifts as it should. Seems like the first ECU repair job was a simple replacement of 7 perfectly good capacitors with no real diagnosis or repair, but they seem to have got it right the second time. THANKS to everyone who contributed here!

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Dude that’s fantastic news! I’m glad they fixed it properly.

That’s great, sometimes the “experts” need a little guidance. I had a 1979 CB750 that was down a cylinder and the “expert” vintage bike shop couldn’t figure out that I was missing the “seat” insert of my needle and seat on one carb. I had to figure that one out.

Time to go rip on it in S3 and S4 and blow out some carbon!

auto

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LOL I found all my old smilies before they were replaced with this “emoji” newfangled term.

I’ll see about incorporating them back in here again.

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Before I start S3/S4 rally driving, I need to talk tires . . .

For years I have been running Michelin Pilot Exalto A/S tires in195/60 R14. (Car is summer driven only.) The fronts finally wore out and these tires, which performed well for me, are no longer available. There were very few tires available in the 14" size. I ended up putting a pair of Michelin MKV3-A tires on the front, but I am not sure these are going to give me sport level grip. (FYI - I don’t care much about wear resistance.) Is this why so many 2G Integra owners move to 15" rims? I could use some tire guidance. Are you guys running 14" rims? If so, what tires?

This might warrant a different thread to be honest. I will say though that when I was still on the 14-inch wheels, I once shelled out for some Pirellis and they were FANTASTIC. But this was in the late 90s.

I just looked up on Tirerack and the sole Pirelli tire that would fit (205/55/14) is running $277 each.

Ugh.

You might need to experiment a bit to see what will still fit on the 14-inch wheels. I didn’t go to 15-inch on purpose, but I wanted to get off the steel wheels and the 1995 GS-R wheels were good looking for cheap.

www.tiresize.com gives a good comparison if you can’t find anything for 195/60/14