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I don't know how many people have read my last thread of problems I was having with my 90 mk3. This is it: http://www.supramania.com/forums/showthread.php?108942-No-Spark-but-everything-tests-good&highlight=spark+tests well anyway my spark problem was resolved by replacing my Circuit...

I figured out my problem. I didnt expect it but I guess some people probably did. I was reading through the TWD and found the following paragraph: "[9] Battery Signal System Voltage is constantly applied to terminal BATT of the ECU. When the ignition SW is turned on, voltage for ECU...

Jet loc, I tested the ignition system according to the tsrm. The tests it gives in the book confirms that the ignition system is ok. Thats what I meant. and you're right I clearly dont understand it because I cant fix it. Thats why I posted this in the first place to see if theres something...

Well, 89supracrazy I did check those wires. Thats whats throwing me in a loop. I depinned the plugs and hooked them up together. What I actually want to know is how do I test if the ECU is sendin signals to the CPS and virse versa. In the TSRM it shows you how to test each component, CPS...

So I decided to work on my car again. I bought the new grommets and check valve for the idle control, installed a better used harness and put e erything together but now I'm stuck with the no spark crap again. I swear that this thing is making me run in circles. Does anyone know how to...

Damn. Its going to cost me $55 for both. Oh Well I want to get it running properly. Well hopefully Im closing in on my real problem. Ive switched harnesses too. One that I was working on reconditioning since last year and never got to finishing it.

Am I missing something here on my ISCV? on the EPC it shows some two parts that look removable, mine doesnt have anything of that sort. Not sure if different years have different set ups but what do you guys get out of this? This is the Intake manifold side. This is the ISCV itself.

Do you have a picture of this plug? I have a random plug near the EGR that doesnt go to anything. My engine was "JDM" before it was rebuilt. It had the factory EGR block off plates. So it kind of doesnt make sense if I have a CA harness and a "JDM" engine. I read your post on my thread...

OK so I cranked and "tried" to start it without downpipe back and it acts up the same. I checked on the polarity of the injectors and according to other posts it doesnt matter. I checked resistance on the injectors and they are good. All of them 2.25-2.5 ohms. How would I go about...

Well mark, the engine never ran before. It was rebuilt, this would have been its first start. I got the car with a blown engine and a spare block. The question is more like "what has the previous owner done". I found many hacked wires under the dash with electrical tape. Some with those...

Ok guys I checked the cam sprockets to make sure they are aligned and do have the center pin. The crank is also at 0 degrees. I even checked the injectors to make sure I plugged them in the right order. ( I soldered RC550') I swapped ECU's AGAIN, and nothing changes. Im affraid of...

Oh sorry maybe I didnt clarify. I did fix my spark issue when I swaped the engine bay fuse block. I am going to check the dowel keys on the cams and cam gears. Im kind of hoping thats the problem at this point. Because if it isnt....what else could it be. I may be donating it to charity...

Well when it started the first time it wouldnt stay on and the reg was set to 20 or so PSI. I then turned it up and the car ran on its own. but like i said earlier I adjusted it to 40 with the vac off and plugged it back on and it stayed at 40. Im really getting aggravated. Im going to Double...

I was smelling the line off of the AFPR. I just took the reg apart and it appears fine. The diaphram is in one piece and dry as a bone. The other side wet with fuel like normal. The spring is there and the little caps that go a long with it. Reassembled to the AEM Manual. Im going to...

So my brother and I went to try adjust the tps and decided on taking off the intake pipe and checking for something. Anything really, something abnormal. Well I never actually taken a pipe off and sniffed it. This time I did thinking about what 89supra7mgte said about a faulty AFPR. Well it...

Fuel pressure is at 40 without vacuum. Even after I install vacuum it stays at 40. Should it change?

Yeah I did check codes. Originally I was getting 14, and 51. Then I cleared 14 and was getting 11, no 51. I guess I fixed 11 when I swaped out the Fuse block and now Im just getting 51. This car is haunted I swear. My little brother said that when he was watching us working on it...

I decided to time it tonight. I have a problem now. When the car starts initially the RPM's rise rapidly. When the RPMs finally drop the car idles lvery rough, and occasionally reving itself. Im running super rich, getting some flames out the back and even what look like fire flies. I also...

So today I went to the junk yard looking for A fuse block to test if it works. I installed it when I got back but nothing happened, again. SO I said F- it Im putting everything back on and finish everything else thats left on the car and maybe taking a break Ill figure out the problem...

So in trying to figure out this bizzare problem of mine my brother and I discovered an odd solution. The EFI main relay. Has it been known that this relay is part of the ignition circuit? I sure as hell didnt know, and its not mentioned in the TEWD. The way we discovered that is I got...