Recent content by hal9000

Well, still no solution. Last weekend I checked the TPS on an ocilliscope and found out it was bad. After replacing and re-adjusting it, the symptoms changed, but didn't go away. Now the car idles high when cold, but when 100% warmed up, it pulses between 1000-1500 rpm at idle. I tried...

Both the auto ecu the car came with and the manual ecu I bought for it (Bench test included, $5 btw) are PM5 Ecus. I confirmed this afternoon that swapping back to the auto ecu has no effect on the problem. The only additional hint I can give at this time is that it definitely appears to be...

It's somewhere else in the thread I think; but the car came from the factory as an '88 DX Auto. I converted it to manual with a trans and ecu swap and some very minor wiring changes reverse lights and neutral lockout. Since this problem basically started immediately after the swap, I'm...

Thanks for the offer, but I think I'm OK for now. I've got the stock auto ecu still, and from the reading I've been doing, it sounds like that will actually work fine. It'll just throw a code for the auto trans lockup solenoid. If that works then I'll call it done. If it doesn't work, I'll...

I sooo thought I had the problem solved, but alas! No luck.... This morning I tested the temp sensors, they're both good. When I checked the TPS on an oscilliscope though, it was pretty wacked out near idle. After finding out that nobody in town stocks TPS sensors for this car (???), I tracked...

Yeah, that was the first thing I checked. The cable has slack at idle, and I've lubed it so it moves freely. I played around a little bit yesterday, and I'm starting to second guess my diagnosis. I can get the throttle down to base (about 750), shut off the engine, and restart it without...

I finally got back to the car for a few minutes today. I decided to focus on the linkage again and found that the throttle isn't returning quite all the way to idle. I can push it closed by hand at the linkage and the idle will return to baseline until I rev the engine again. Neither of the...

Yup, I already had that part. Thanks though. Since it's a PM5 it sounds like there's no chance that it's the wrong ECU (one more possible diagnosis eliminated at least). Anyway, I've been out of town all week. Just got back last night, and will be leaving again tomorrow. No time to work...

Is it possible that its an MPFI ecu and not a DPFI ecu? I don't know if the MPFI was the same generation of ECU or if a DPFI car would even run with an MPFI ecu, but since '88-91 CRX's came with both depending on model, I guess I better eliminate that possibility.

Well, I did the swap, and I bought the ECU separately from the trans so they came from two different cars.... But you are correct. I just found out how to decipher the ECU numbers. PM5 are CRX ecus, A080 is for a manual trans. The rest of the code is just the software revision.... I still...

Nobody knows about the ecu?

Well, I'm back from my hunting trip (got my pig) and while I don't have much spare time for the car I decided to check out a hunch. The ECU I have is a 37820-PM5-A080. I'm not 100% sure, but I think that might be the wrong ECU. I found an ebay listing for a 37820-PM5-A060 which is listed as...

Thanks guys. I've found a site with good info for the sensor values and a few other things here.... 88 - 91 CRX ECU Error Codes Unfortunately, I won't have time to start checking things again until I get back from Texas (I'm going hog hunting starting tomorrow), so Probably not till the...

I'm selling the car as soon as I get this issue fixed. Really don't want to spend $100 for a Manual (More than avg for me since I have to pay the "small town tax" if I buy it locally). Unless anybody can confirm that the manual contains the sensor range values, It would be wasted money for me...

No more ideas then? Nobody knows where I can find the value ranges for the various temp sensors and such?