wire pulled out of cas plug

[scott240sx]

The farthest right wire broke off right next to plug for the cas. All the wires right next to the plug are missing the insulator and are about to break off. Do I have to get a whole new harness to get this plug or can i just get it somewhere? Also with the wires in this condition what kinda of problems would it cause. I have been having problems with this motor since I did this swap. It is hard starting and it bucks and breaks up around 3k to 4k rpm. The wires on the cas plug have been in bad shape the whole time but the one wire just broke off recently. It will run differently from time to time. Sometimes it has power and will excellerate untill it gets to 4k and other times it will stop at 3k but other times it will have no power and only excellerate only under partial throttle. I have tried 2 maf's, tps, fpr, fuel pump, 2 ecu's, pressure testing the intake system, checked for vacuum leaks. I have posted about this before several months ago but manly wanted to ask about the plug but any other ideas would be greatly appreciated. Also most of the time it will idle fine but occasionaly will skip. And it will not stay idling most of the time untill it is warmed up.

[hpmachine]

my car has all kinds of wiring issues too. your best bet is to get a wiring diagram, a mulimeter, and a soldering iron and just start going through all the wiring. look for bad grounds etc. if you search on this forum you should be able to find out about the cas wires. the white wire is the tach signal, and i believe two of them are grounding wires. i forget what the other one is. revs breaking up above 3-4k sounds like a boost leak but it could be a lot of things...

[S13FASTBACKSR]

I didnt see you mention that you checked your timing..im assuming you did because thats very easy and common to check...spark plug gap? also its possibly a bad ignitor or coilpack..check your ecu for a code

[scott240sx]

I couldn't get a signal for my timing gun but i did turn the cas to see if it would change it for the better but no luck. I changed the spark plugs and i used a gap recommended from this site but forgot what gap. About the ignitor and coilpacks, I have been told that if they go bad they either work or don't work. I had to borrow someone else's ecu to get a code because my ecu doesn't have a led light on it. The code was 55.

[S13FASTBACKSR]

too bad you couldnt get your timing gun light to work..but turning the cas didnt seem to help? then its not your timing i guess but it could be your ecu..did you drive your car with your buddies ecu in it to see if it hesitated or did you use it just to check for codes? the problem sounds like it could be a bad ecu so let us know if you test drove the car with your buddies ecu or just checked for codes with it...by the way your not burning rich?

[ILikeMy240sx]

if the wires on your CAS plug is all screwed up like you said then your car will never run right. CAS is so crucial to SRs running correctly.

Fix all the wires on the plug first then go from there.

[scott240sx]

The wires on the plug is the next thing I am going to fix to see if that is the problem. The only way I know to get it fixed is to buy a whole new harness and cut the plug with enough wires left to solder it together. If anyone knows where to get the plug let me know. thanks

[ILikeMy240sx]

yeah, you cant really start troubleshooting your car with CAS not working properly.

[scott240sx]

Ok I found someone with a cas plug, I will have it in a few days. If it fixes it I will post it up

[scott240sx]

Ok I replaced the plug and nothing changed. Also me and a friend took the cas out and put it back in to set the timing. We didn't use a timing gun since we couldn't get it to work. I did some searching on cas's and found other people with the same problem but never posted thier solutions. The car hardly has any power and it will only accelerate under partial throttle. It does boost up and it bucks and spits and sputters. Also i get backfire through the exhaust and intake. Could my cas be bad? Also it is hard to start the car especially when the motor has cooled off.

[ILikeMy240sx]

Ok, you can't be right on the money with timing if you do not use a timing gun. You can eyeball the CAS and install it by the dots but that still won't put you at 15* BTDC while in timing mode. First try that.

Also, i had a similar problem when my exhaust cam was off by a tooth on the timing chain hence throwing my timing way off and whenever I hit 4500 RPM or so, it would feel like I hit the rev limiter.

Also, did you test for boost/vac leaks by pressurizing the entire intake system? This is crucial because a large amount of air leak will cause that to happen as well.

Another thing... You can test the CAS by taking it out and turn your key to ON. and turn it manually by hand. You should hear the injectors click. Also, take a spare sparkplug, put it in the coil and ground the electrode. As you manually turn it, sparks should fire.

If CAS is good and you are ABSOLUTELY sure that there is no boost/vac leak.

I would check TPS next.

[S13FASTBACKSR]

ya im with him ^^ If your timing is slightly off its gonna do that stuff to your car..get a timing gun they arent very expensive..if you still have the problem after setting your timing to the correct spot you should really check your ecu for codes.

[scott240sx]

i looked back at the fsm and will try to time it again with the gun. i don't have a led light on my ecu its missing but we tried other ecu's to see if mine was bad and the code off of them was 55. we pressurized the intake system and no leaks.

[scott240sx]

i forgot to ask how did you exhaust cam get misaligned, i haven't taken anything apart but who knows maybe someone did before i got it

[ILikeMy240sx]

I was replacing the oil pump which ofcourse required taking the head off hence the timing chain... When we install the ex cam again, it was a tooth off but didn't even realize it.

rotate your crank until your at TDC on compression stroke and your cams line up with the dots on the timing chain. You might have to rotate it for a while.

did you check TPS or MAF?

[scott240sx]

yes we tried 2 different maf's and a tps from a sr20de and nothing changed at all. i am going to try to get some time today to use the timing gun today

[scott240sx]

well i put the timing at the 2nd mark from the left and it started popping and then it cut off. i tried to crank it but couldn't. I started checking things out and found out I didn't have spark.