something is wrong

Post by **1via** » Mon Mar 13, 2006 3:25 pm

I was driving saturday night and my car started to bog. At first I thought it was because something got wet in the engine bay because it was raining and there was a lot of fog. Then I thought it was my mafs again but I can rev it pass the 2k rpm. Then I thought one of my injectors went bad but the thing is that it doesnt do it constantly. I jumped on the express way and for awhile it stopped. Then it started to do it again. I parked it and started it sunday night and I drove home and it was good. Then I wake up this morning to go to work and everything is okay till I exited the express way and it started again. It sounds like a wrx. Im losing some power. I was in fifth gear when it started and when I tried to give gas it wanted to boost. what the hell is it?

Post by **pulsar gtr** » Mon Mar 13, 2006 6:19 pm

sounds that you either have a bad ignitor or coil.Double check your wiring first, but the above parts are the #1 failure on these engines.

Rafi

Post by **nismoplsr** » Mon Mar 13, 2006 7:53 pm

Deff sounds like a bad ignitor. They will work intermittently but then once they get warm start to break up.

Post by **1via** » Tue Mar 14, 2006 6:51 am

Would a ignitor make like that constantly? Because make it seems that it does it after a boost a couple of times. Other than that it cool. I drove it today and its fine but I didnt not boost.

Post by **r34 gtr** » Tue Mar 14, 2006 10:43 am

when you put your foot into it, the ignition has to work a whole lot harder because the pressure in the combustion chambers is much greater. this heats up the coil, which then probably craps out.

i had mine go bad on me, but my dad wasnt about to let it die, so we just opened it up and fixed it. i would suggest buying another one though, as it was waaay more work than it was worth. try ebay, im sure you can pick one up for nothing.

- Tim

Post by **1via** » Tue Mar 14, 2006 12:07 pm

How would check my ignitor chip?

Post by **rico05** » Tue Mar 14, 2006 12:21 pm

Do you have a Factory Service Manual? It is page EF & EC-91. If you do not have a FSM, you can get it off of my website:http://people.tamu.edu/~rico...e.htm

Sounds just like when I lost a coil. It was ~$60 at the parts store, BTW. I found a new OEM one on eBay for a Pulsar NX SE for $10 shipped though.

Post by **1via** » Wed Mar 15, 2006 8:42 am

Well I got to injector 2 and 3 this morning and all was okay. But on my way to work it started to bog and sound like a wrx again. I got to work and decide to unplug the the harness again and the only one that didnt make a difference was injector number 4. Looks like thats the winner. Its in and out. Now i know usdm 440cc are replacement but I am not ready to upgrade the injectors. Where can I get a 370cc injector to replace it with?

Post by **biosehnsucht** » Wed Mar 15, 2006 10:32 am

are you sure its the injector and not the coilpack?thats a more common issue. hope that it is cause coilpacks are purchasable at the usual auto parts places, injectors are not..

Post by **1via** » Wed Mar 15, 2006 10:54 am

Well thats what happened? I unplugged the harness of the 4th one and there was no change at all. This is when it started to bog again. I call rc engineering and they have a replacement for $88 bucks. 370cc injector high resistance and top feed right?

Post by **c-rad** » Wed Mar 15, 2006 11:06 am

1via wrote:Well I got to injector 2 and 3 this morning and all was okay. But on my way to work it started to bog and sound like a wrx again. I got to work and decide to unplug the the harness again and the only one that didnt make a difference was injector number 4. Looks like thats the winner. Its in and out. Now i know usdm 440cc are replacement but I am not ready to upgrade the injectors. Where can I get a 370cc injector to replace it with?

90-94 Eclipse/Talon/Laser automatic turbo injectors are 390cc which should be close enough to get you driving.

Post by **1via** » Wed Mar 15, 2006 11:17 am

Well I called rc engineering and they have 370cc high resistance top feed injector for $88. what do you think?

Post by **float_6969** » Wed Mar 15, 2006 11:58 am

Just because you unplugged the 4th injector and it didn't make a difference doesn't mean that the injector is bad. It just means that you know that the #4 cylnder is the one that's not combusting. This VERY MUCH sounds like an ignition problem, not a fuel problem. I won't go so far as to say that it can't be the injector, but I would replace the coil pack before I replaced the injector.

Post by **1via** » Wed Mar 15, 2006 12:10 pm

well Im going to this shop on friday and they will tell me then. How would I know the coil pack is good or not. I tried looking at my fsm but somehow it doesnt want to load up.

Post by **float_6969** » Wed Mar 15, 2006 12:48 pm

The best way to test it is to replace it with a good known working one. As was stated before, they can sometimes be had for pretty cheap. Outside of that, you can pull the pack, tape a spark plug wire to the pack with a spare plug and crank it and see if it sparks.

Post by **pulsar gtr** » Wed Mar 15, 2006 2:03 pm

I highly doubt your injector is gone bad, if you unplugged the injector and it didn't make a difference it doesn't mean you have a bad injector (well it could be bad), but if you have no spark and the injector is good, even if you uplug this injector you car will still continue without any changes as you don't have a spare on that cylinder.

The way to test the injector is to measure the the injector across the two pins on it with an ohm meter and it should read approx 3 ohms.

But Get yourself an extra ignitor, it is good to have a spare one.

Good luck,

RafiPULSAR GTR

Post by **1via** » Wed Mar 15, 2006 4:03 pm

well Im gonna take it to the shop were they will check the injector, coilpack, and the ignitor. I heard the q45 ignitor is a plug and play. Is this true? How much are they?

Post by **pulsar gtr** » Wed Mar 15, 2006 5:27 pm

Yes, the Q45 ignitor is an identical part with and identical part #, also 1987-1989 pulsar with ca16de or ca18de share the same coil packs as well as the same ignitor.

RafiPULSAR GTR

Post by **1via** » Thu Mar 16, 2006 6:01 am

I looked at the the faq post and did not see the part number for the ignitor and coil pack. Can you give me the part number please?

Post by **r34 gtr** » Thu Mar 16, 2006 9:28 am

if you just go and type "ca18det" into the ebay search thingy you will find no less than 3 ignitors for sale. i dont think any are more than $50, and one of them even offers free shipping.

i would not suspect the injectors just yet. i would be willing to bet money its to do with the ignitor or coils. just because a coil can produce a spark when the plug is out, does not in any way mean its got the goods to produce the same spark under the high pressure inside the combustion chamber. believe me, im a seasoned veteran at the whole "its sparking but not firing" thing....damn jeeps....

get your injectors cleaned, and then try another ignitor. theres likely no need to replace the injector, those things hardly ever go bad. probably half the people on here have had something go wrong with an ignitor or coil.

those part numbers are in the fsm. if i knew them offhand or had my fsm here i would tell you, but im kinda 3 and a half hours from my house right now...

- Tim

Post by **biosehnsucht** » Thu Mar 16, 2006 12:02 pm

also quick note:

you do NOT want high impedence injectors (you mentioned RC having them). in theory you could use them but you'd have to bypass the resistor pack and slightly adjust the injector 'blast off void time' or wtf it is called in romedit since it won't be the same..

Post by **sideways danny** » Thu Mar 16, 2006 5:52 pm

to test for a broken coil swap 3 and 4 coils around , if the problem moves to 3 then it's the coil

Post by **1via** » Fri Mar 17, 2006 3:41 pm

I went to the shop and its the freaking injector. Im not ready to upgrade yet. Does anyone know where I can purchase 370cc. Has anyone replace the injectors themselves? How hard is it?

Post by **biosehnsucht** » Fri Mar 17, 2006 10:37 pm

Did the shop tell you this or did you test it yourself.How did you test it?

Coilpacks die all the time, injectors almost never do.

Changing injectors ain't so bad but its a pain moving everything out of the way to get to them, then you have to be careful not to screw up the orings taking them in/out.

You're not likely to find a replacement except from another CA18DET, either from someone here or on ebay or whatever. You can't get one from the parts store or even really Nissan in the US, AFAIK.

Post by **1via** » Sat Mar 18, 2006 7:50 am

sideways danny wrote:to test for a broken coil swap 3 and 4 coils around , if the problem moves to 3 then it's the coil

Well I did what you said. I drove around and nothing. I am waiting to see whats goes on. Hopefully its the coilpacks because then Ill replace all four of them. This coilpacks I get them at what part store?

Post by **mikesim** » Sat Mar 18, 2006 10:39 am

i thought injectors can be cleaned and rebuilt?

there's a shop here in my city that does that. coincidentally, they rebuild turbos too.

coilpacks can easily load up and stop working at increased cylinder pressure. the car would lose power and feel like it's down a cylinder. usually EGTs drop rapidly too, if you have an EGT gauge.

Post by **1via** » Sat Mar 18, 2006 11:00 am

mikesim wrote:i thought injectors can be cleaned and rebuilt?

there's a shop here in my city that does that. coincidentally, they rebuild turbos too.

coilpacks can easily load up and stop working at increased cylinder pressure. the car would lose power and feel like it's down a cylinder. usually EGTs drop rapidly too, if you have an EGT gauge.

No I dont have a egt gauge yet. Just got a oil pressure gauge. Im going to drive this evening to see what happens.

Post by **1via** » Sun Mar 19, 2006 10:00 am

alright guys I switched the coilpacks and cylinder three was not working which is the freaking coilpack. Now I need some part number so I can go buy it. I am asking for a coilpack for 1989 nisssan pulsar?

Post by **pulsar gtr** » Sun Mar 19, 2006 12:36 pm

Any coil packs from ca16de or ca18de 1987-1989 pulsar will work, don't have the part # but you really don't need it. as long as th coil pack comes off a ca16de or ca18de, you should be good.

RafiPULSAR GTR

Post by **float_6969** » Mon Mar 20, 2006 8:15 am

Tell the shop that they are a bunch of idiots BTW. I can't think of anyone on here who's had a bad injector. Bad coilpacks and ignitors are common.

something is wrong

something is wrong

Re: something is wrong (1via)

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