warp0007

if i blew the ecu in my car would it be better just to by pass teh whoel hting and how would i do that

SonicRaT

iTrader: (6)

You can't bypass it on an EFI car, you'd have to convert to carb & dizzy.

Piranha

Trav

Or buy a standalone.

btw, the Microtech group-buy is in progress. Your timing couldn't be worse .. err.. better.

saltlakebay

(1) Might want to contact icemark. I think he sells better than new ones. He rebuilds the ecu's and cpu's . At least he used to.

(2) get a soldering gun

(3) buy a stand alone

(4) kick it really hard

Icemark

Yeah I am rebuilding the CPUs, Logicons, wiper switchs and S4 ECUs.

The S4 ECUs are very hard to blow up. Even if you short wires, they usually only blow a easily replaced transistor or Resistor.

What is the problem that makes you think you blew up the ECU?

warp0007

Well, the car was running onlyt desent. ANd i took it out the next day after installing that greddy bov and I drove it and it was working but still slugish. I took it out the next day and this stock honda crx almost beat me I felt like I was getting no boost from the turbo. I was playing aroudn with the waste gate(that mechanical arm that comes out) and it was hard to push in and out and didnt seem like it had been controlling that exhaust flap or whatever so I pushed it in and out a few dozen times and it seemed to loosen up a bit, i put it back on. I also cut the top part of my air intake box open to allow more air and thats about it. I took it out and it was sooooooo fast faster then it had ever beena dn I didnt know why. WEll this whole time i havew no exhaust, only that main downpipe cat. which was backfiring and very loud when i let off the gas. IO found the old exhaust i had laying in the yard and justy took the stright pipe to the second cat and put it on. I was a lot quieter, barely any backfiring, and smoother and faster. I was so happy. I took it out for like 3 minutes abnd it ran fine, I went to take my friend for a drive later, and I dropped it 3rd from 4th and it hesitated real real bad and started dying. I was pumping the gas to keep it going. Since then i havnt been able to get it started. It blew the plastic hard hose to the bacv (bottom) and the hose from the subzero system at the uim had fell off(which by the way has a t but is blocked off is that whbere the bov hose is suppose to go?) I replaced them, and checked all other hoses and connections . It started once for like 2 seconds and died and no more since. Ive checked compression, its getting fel, its got spark, it was running great and now I dont get it at all.
I cant adjust timing because theres no yellow mark and no notches on the pulley sop i dont know how to tell. Should i astart checking the afm, the tps and stuff like that? whats teh best way?

yearrgh

Good God man! At the top of the list of things that seem good, but are really bad is when your car is suddenly much faster for no reason. I'd guess that the waste gate is sticking and you were having major overboost.

Piranha

Doubt it, he would hit fuel cut. Do the deflood procedure.

Icemark

doesn't sound like the ECU at all to me, more like the ACV is not working and other issues.

warp0007

Alright Icemark i will check that how do i do that,, i did the atf trick and all the other stuff already so its got to be something wrong like you said the acv

Icemark

ACV, clogged cat, wrong BOV adjustment, clogged intake, all sound like first possible things to look at

yearrgh

Fuel cut may have been the real bad hesitation and dying he was talking about.

warp0007

well i thouight it wa a clogged cat to, becauae it had been sitting out int he rain and **** for so lonmg so i took it bback off but still cant start it, the bov before i put it on was stright blockedd off there wasnt one at all and it was working fine for a while after i had hooked iut up, but i notice that tube for the exhaust the small one isnt connected to anything but then again its always been the set way it is now and everything ran fine. How do i check the acv where exactly is it?

Icemark

good point, yep that too.

how much boost are you getting warp?

warp0007

i dotn know but the hesitation brought me down to like 800-`1000 even with the pdal to floor. I was litterly pumping the pedal trying to keep the car running and it would stall. It would start back up but as soon as i got back on teh road and started getting above 800 or even anything at all it waould start again i towed it home adn now it wont even start and youve read the rest. But everythign is stock for the most part i dont know why i woudl have been getting to much boost.

warp0007

when I was trying to do the atf trick adn crap I pulled the plugs and even though they were farely new i replaced them. NOw heres the deal. A long time ago i had pulled the plugs and noticed antifreeze on them, so i did the whole blockweld trick thing and it has seemed to work, now i pull the plugs, but theres no antifreeze just looks liek theres possibly a Litte little water in it, its milky bubly. But I smell fuel i know theres gas, and I changed the oil, if it was the cooling ystem wouldnt i see antifreeze not just water like i did a lon gtime ago.

warp0007

Well maybe the fac tthat when I hooked up the pipe and second cat to the downpipe cat, I didnt hook up that small hose and the ecu got confused or something, but again i have only the first cat downpipe after the turbo and thats it, the two small metal hoses are just hanging connected to nothing.

warp0007

bump

Piranha

If you have fuel and spark, and you THINK your engine has good compression by strong pulses out of the plug holes, then you didn't do the ATF thing right. Do it again, step by step, as in the howto.

warp0007

well seeing how ive had to dop that same trick for the last year 10-11 times a month, im pretty sure i was doing it right. ITs not even popping, like something else serious is wrong. Maybe timing, but that pulley for timing doesnt have a yellow mark or notches i looked cloesly. THis is only my second rotary I work at Key LArgo IMport Repair and auto shop in south florida do alot of inport vehicles and im an rx7 head just had a different problem and ive done everything i can think of now just start replacing stuff I guess i intended on building the car up anyway so im just going to save a little and do the whoel deal in one shot.

Piranha

ok. this is what you do. find the marks on the pulley. they will be (well, I know the yellow one) a notch or 2. the first one (farther clockwise) is yellow. Use something to mark it. Get a timing gun, have someone crank it, and see if it is somewhere near the mark.