RetardedGenius

alright car still isnt running. i got my cas today put it in and cleared the ecu. tried to start it and it still isnt getting spark. do diagnostics again and get #2. the wires are fine, the cas is fine. what the hell?

ERAUMAZDA

well explain how it kicks over

RetardedGenius

it goes er er er er er er er er er er er er er

Rob500

If you're getting a #2 error the car will not start. The ecu shuts down spark and fuel. You may have a broken wire in the harness possibly near the cas itself.

Rob

Kago

HAILERS

Lay ONE of the LEAD plug wires on the fender near a strut attach nut. Remove the CAS with it's wiring still attached. Turn the key to ON. Spin the CAS by its bottom gear. If the plug wire did not spark, and each and every fuse, both in the engine bay and the crew compartment are intact, then the ECU is junk, most likely.

You did check and see 12v at the black/yellow wire at the LEAD coil assy small, two wire plug?

You checked and DID see 5 volts approx at the boost/pressure sensors brown/white wire?????

CAS never go bad unless you stick a screwdriver in their guts while its spinning/not spinning.

You've already rung out the wires to the CAS from the ECU like the little online/free manual shows????

ECU is toast due to some work that was done on the car.

RetardedGenius

alright here are the results...

12v at leading coil
5v at pressure sensor (not sure if i have boost sensor. mine sis N/A)
all fuses good.

but here is the kicker. i took out the cas and kept the harness connected. hooked up spark tester, turned gear, got spark. put cas into car, no spark. i thought maybe the part in the car that turns the cas wasnt spinning, took off the black cover on top of the cas and tried to start it. cas spins fine, but no spark.

not sure where to go from here...

88IntegraLS

If the Cas works when not stabbed then there is obviously a problem with its connection to the engine when installed. You say you get no spark when the cas is installed and the engine is turned . . this eliminates the possibility of it being misaligned when stabbed. So now the question remains, is the engine actually turning the cas when cranking? In other words, the geartrain which turns the cas could be not working properly.

RetardedGenius

anyone else?

88IntegraLS

Ah, sorry, didn't catch that. So if it fires the plugs when spun in your hand but not when installed, and if it spins when installed, the only other option is an electrical or mechanical issue in the cas dependent on how it is affected by being mounted. Ie. it could be shorted or warped when mounted, but that is kind of unlikely.

RetardedGenius

is there any other sensor that could tell the car not so spark?

RetardedGenius

is there any other sensor that could tell the car not to spark?

HAILERS

As far as I'm concerned....the plugs are firing. Other things could be causing the non start situation. Flooded??? CAS stabbed off a bit too much???? IF using a timing light to see if its sparking....I say don't. My Bro swore his car was not sparking. He used a timing light. I said poo on that. Took a lead plug wire off and put it near the strut tower. Had spark.

Tell you what. That's great what you did with the cas...spun it and saw spark. So now I know the ECU and coil/igniters are good. So do this. Pull all the plugs. Now lay the LEAD wires close to the left strut tower nuts (under the rubber cover). Both of them please. Now spin the engine over with the starter with everything else connected up. YOu WILL see the LEAD plug wires spark. Confirmation that spark is there.

The idea above is to take the load off the starter by having the plugs out. Also the engine spins faster. I know you will have spark. Write back tomorrow for further ideas.

RetardedGenius

ok i took all the plugs out an put them on the strut tower. turned the key. no spark. But once again. if i turn the cas with my hand, it fires just fine. My only guess from here is that my engine isnt turning the cas fast enough.

V8kilr

the cas will throw out a spark at 5rpm or slower, it has to or the car would never start.

Since I fixed a bunch of problems on my 89 gtu I can now go out with a half dead battery and start within 10 revolutions, and the engine is spinning so slow you can count them.

on my 84 "which has a dizzy" I can start on a damn near dead battery, within 7 revolutions, permitted the car hasnt been sitting for too long.

So I would single out the engine not spinning fast enough,

If you want to buy a good one go here

http://cgi.ebay.com/ebaymotors/ws/eB...tem=2423674511

or just make me an offer on it.

RetardedGenius

i bought a 2nd one off a guy on this site. their resistance is about 162 ohms on both sides. acording to the good ol haynes manual they are good.

Project84

The CAS he is using he got from me, and it came out of a running car. It ohm checked good before I sent it, just as it check good when he got it. The engine had a coolant seal leak, but that doesn't affect the CAS.
To check the components that turn the CAS, you will have to remove the main pulley and front cover. There should be a gear on the front of the engine crank shaft. Or you may be able to see if by taking the CAS out and looking in the hole that it sits in. Might need a mirror along with a flashlight. I bought an inspection mirror on a little telescopic stick from a NAPA autoparts store.
I've never heard of the gear getting screwed up in any way, but I guess anything is possible. Was the engine apart recently for a rebuild or something?

Kago

i had to take the intake off. (both parts basically to the rotor housing) we found a vaccum check valve that had been broken and replaced it. but we didnt take the engine itself apart.

this car is becoming the most frustrating thing ive ever worked on. tomorow im borowing an ecu and trying that. (just to be sure) beyond that i have no idea. it would start when cold but not hot. then all at once it quit starting. id do anything to just get back to my hot start problem.

Project84

the work done to the intake shouldn't cause the problem with the spark. When you had the intake and throttle body off, did you see the ground wire that went to the top of the engine? Was that secure? I don't know if you can get to it without removing the intake and stuff, but I ran mine to another location and grounded it to the firewall by the windshield wiper motor where the ground wire from the tranny comes from. I had removed my emissions controls and the vacuum spider so was able to reach under the throttle body and get to the ground.

I really don't know what else it could be. Check the AFM to see if you plugged it back in. Let us know what happens when you swap the ECU.

HAILERS

If you take the black cover off the cas you'll see it spinning. So take a look while your spinning the engine with the starter. IF the cas spins while using the starter...then you should have spark just like you did when spinning the cas by hand.

I don't see it being a grounding isssue. You held the cas in your hand, spun it, and had spark. There was no ground b/t the cas and the engine when you did this. So not a grounding problem.

I assume when you layed the plug wires on the fender and had all the spark plugs out that you spun the engine with the starter to look for spark. Sorry, only reason I ask is because you wrote **turned the key on*** which left a tash of doubt about whether you actually spun the engine with the starter.

I'm outta ideas. If you have spark by spinning the cas with it in your hand, but no spark with the cas in the engine and spinning the cas using the starter.....got me. The only thing I can think of in that case is that the wiring at the cas is chaffed and maybe touching ground and killing the cas signal. Or when the cas is in the engine the wire harness gets a bend in it and seperates one or more of the wires going to the ECU.

RetardedGenius

project84: i found the same wire and did the same thing. we also found a few more grounds we cleaned and reattached. im about to check afm right now...

Hailers:im sorry about the confusion, i tried to start the car with the starter. and i physically saw the cas move. im gonna check afm and vaccum lines.

RetardedGenius

this was on the back of the top intake by 2 coolant lines. there should be 3 prongs but there is only 2. could this be my problem? if so does anyone have one?

sorry about the pic, all i had was a polaroid

RetardedGenius

where is the pic???

RetardedGenius

Kago

www.geocities.com/sephirothcam/brokenvac0001.bmp

this is the addy for the pic