I also have a perfectly good Silvertop ECU around 1991 and a fried Silvertop ECU from around 1993. Unfortunately neither have these exact transistors in them.

I should have been more clear as to what I have going on. I have what can be considered a 100% stock blacktop wiring setup with the exception of the COR from the ECU out to the harness is cut and going to nothing AND all the wiring removed for things like body components, lights, etc. I have 12v in ...

Like the title says. Must be in good working condition. No bad/burnt parts inside.

Actually, I will consider known bad ECUs with information on what's wrong and if the price is right.

513-806-sixnine0six

Have you tested the STA wire for continuity and tried shaking it to make sure there is a good connection? Sometimes you may not know how something works but you can test to make sure its input is not broken My STA wire is spliced in with the starter signal wire. I actually cannot find the ST or BT ...

Here is the link for setting cam timing on a 20V: http://forums.club4ag.com/zerothread?id=87830 I thought this was just for a blacktop. If this is correct for a silvertop then I would be a tooth off as my cam marks are not aligned to each other but then my marks would not be aligned to the backing ...

Can someone help identify the transistor pictured? All the rest on the back of the board say "GA 77". Now I think this is just linked to the COR relay based on tracing and the fact that I accidentally applied voltage to it and it no longer works :roll: The article that is linked to the VVT...

I assure you the cam dots are lined up to the backing plate however the cams are not lined up to each other. That picture is more head on and accurate

Ok, this is edited. I had pics but my cam timing is spot on. I doubled checked it and was a tiny fraction off the first time but all marks line up exactly.

If I remember correctly, it would run better at higher revs. It was doing it on idle and partial throttle. It was almost a year ago so it is hard for me to remember the exact details. Hope this helps. You could rent a fuel pressure test kit from a local auto parts store and check your fuel pressure...

This is a great theory Jondee and I will check the cam timing next time I'm in the garage. I do wonder though, as you mentioned, if you can turn the VVT by hand. I didn't see any mention of this in setting cam timing and I believe this would be important information as to not make this mistake by ac...

Big thanks to Unknone86 for hooking me up with most of the kit. I'll still be in need of a few parts and I'll post shortly what exactly I need. If anyone else has transmission parts, please lmk.

UPDATE: reset TPS best I could and well as ignition timing a couple degrees. With VVT plugged in it runs about the same. Unplug the VVT and it runs MUCH better. Initial lean for fraction of a second that you can't really feel and then goes back to a richer than 14.7 and pulls well. So for the kicker...

Additionally, using the vacuum pump seems fair enough but if you are actually supposed to use the vacuum diaphragm throttle stop then this will change the TPS position. Also this will affect checking codes as the TPS won't read closed when sitting with engine off bc the diaphragm needs vacuum to clo...

Can someone help me understand something with TPS adjustment. The FSM says to "disconnect TPS sensor and insert feeler gauge between the idle stop screw and stop lever" Ok so here is the problem, unless you use a vacuum pump to pull vacuum on the vacuum diaphragm or start the engine (which...

Jeonsah wrote: It turned out to be the fuel pump. I just got a standard replacement for an 86 Corolla GTS at the local parts store and that fixed my issue.

How did your engine run up top before fuel pump replacement? Mine will go back to running really well by the time it gets near redline.

http://forums.club4ag.com/zerothread?id=73380&postid=693597 I always forget about the archive, at first. This thread has great info for anyone else having these issues. I'll keep you updated. I'm hoping it runs better with the VVT unplugged. Does anyone know what that MAP sensor filter does thou...

I am looking for the little inline filter that goes between the MAP sensor and the vacuum signal.

It's the whitish clear piece in green writing

Edited (I hate typing on cell phones) Engine: Silvertop, Auto BT ECU, ITB trumpets, no emissions equip, 3sgte O2 sensor, sqe distributor relocation kit. Possible culprits IMO: MAP, ignition timing, VVT, TPS, ? Issue: -Watching my wideband sensor I have an issue with the vehicle going lean most of t...

still looking for the elusive fuel sending unit.... Someone needs to open an AE86 restoration parts business...

To be more clear, I did get the extended wire from SQ (after originally not buying it) and did move my leads around so mine might be a little longer than whatever one you are using. But the extended lead is for number 4 according to the SQ site so idk what arrangement you have going on.

The extended wire was for cylinder number 4. Not the coil. I used the OEM coil wire and just mounted mine closer to the distributor where the battery used to be.

I know there are some discussion about brakes out there but I am looking to discuss track day pads only. What do you use for your track days? Looking for -what kind of pad Brand and type (model) -Price -feel -fade -how much time time on track each session/day - same pads FRONT and REAR? Less importa...

Looking for a rebuild kit for my 3rd gen (AE86) T50 transmission kit. Does not need to include syncros.

interested, PM'ed. Also do you have any of the kits without the syncros. I need one with syncros and one without.

Plugs were fouled... coincidentally happening after last shut off yesterday. Put another set in and fired right up. Also car ran around 12.8 to 13.1:1 at idle. Car runs well, thanks for your help!

Also still no codes from ECU. For a car I started and drove around, it's so odd to me that it won't start at all. It's only a little colder outside than yesterday but nothing has really changed. If a major ECU wire got interrupted then wouldn't it throw a code?

Update, relocated vacuum to point "C" and car won't start at all, relocated back, still won't start... idk what is going on now. All I did was put my blower motor back in as it was never installed since swap. I visually checked connections but saw nothing wrong. Time to retest everything a...

jakes_hachiroku wrote: ill just tune up my webers at the moment hahaha

Well if you ever do decide to sell those Webers, please let me know! I am going for one car with FI and one carb'd. Both have their benefits and disadvantages. It's nice to only need a handful of wires with carbs (aside from ignition)

I can't help entirely with your question but what are you trying to achieve? Just going to COP? Do you have any ignition advance adjustment? MSD 6AL2 programmable offers adjustment where as the standard 6AL does not.

thanks Jondee, i just had a read and I will try this morning when I get my lazy butt out of bed. I did notice that there is supposed to be a pulsation dampener running to the map sensor but my engine did not come with one (or a map sensor). Are these sourceable from other vehicles in the U.S.? I'll ...