Whats wrong? bad misfires, jumpy tach
 

1. Car idles rock solid perfect
2. Starts normal
3. free revs fine

but...

1. above 3000-3500rpm when accelerating, sometimes it starts cutting out hard, like a misfire, and the tach gets jumpy.
2. above 3000-3500rpm when 0% throttle deceleration, tach will also get jumpy.
3. This problem started today. I daily this car 100 miles, and never had an issue until today.
4. I also have a head cold, any good remedies?

Re: Whats wrong? bad misfires, jumpy tach
 

module. i had my toyota do this with the stock module, and it died when i got back home. also, efi toyota dizzy pickups work with msd fine :)

Re: Whats wrong? bad misfires, jumpy tach
 

there arent any ignition components that honda people typically refer to as the 'module' so what component are you speaking of?

Re: Whats wrong? bad misfires, jumpy tach
 

module on a toyota = takes distrib signal, amplifies it, sends it to the ecu for injector timing, and sends a nice fat 12v signal to the coil for spark.

they're VERY prone to failure after 15-20 years for some reason. my truck is 22 this month. go figure!

Re: Whats wrong? bad misfires, jumpy tach
 

sounds like u need a dizzy bro. Normaly the ijniter so u buy a new dizzy

Re: Whats wrong? bad misfires, jumpy tach
 

thank you captain illiterate. haha

Re: Whats wrong? bad misfires, jumpy tach
 

Ignitor. Almost 100% sure of it. Does it all the time. Fixed about 3 cars with similar problem by replacing this.

Re: Whats wrong? bad misfires, jumpy tach
 

Ignitor indeed.

Re: Whats wrong? bad misfires, jumpy tach
 

---- me, i blow ignition components like joseph davis in a boys locker room.

how much do those damn things cost?

Re: Whats wrong? bad misfires, jumpy tach
 

I'm not 100% sure if you can buy them alone. Easiest is to grab a spare dizzy and pull it out of that. Basically any honda one fit any other.

Re: Whats wrong? bad misfires, jumpy tach
 

ignitor, yeah. whatever, it doesn't ignite anything, it's a module.

Re: Whats wrong? bad misfires, jumpy tach
 

103495 , IGNITER $72.59 Qty
Number 7:
http://www.hondaautomotiveparts.com/...13sr30_f02.gif

Re: Whats wrong? bad misfires, jumpy tach
 

Most OBD1 swap to each other and OBD0 the same.I keep a box of dizzys around for just this problem :P

Re: Whats wrong? bad misfires, jumpy tach
 

Weird ever since I put a crane ignition and coil in my 92 accords tach jumps all over to. the car doesn't cut out or drive bad like fooks , the tach just acts like it did a few line of coke.

Anyone know how to fix it besides going back to stock?

Re: Whats wrong? bad misfires, jumpy tach
 

i've got 5 bucks on the ignitor too, friend of mine replaced one in his car about 3 months ago. Ran great for years, went to go start it after he just shut it off, and the bitch wouldn't run. We were on it for 2 days with a lab scope :S

Re: Whats wrong? bad misfires, jumpy tach
 

throw in (between tach/crane) some low uf caps (.xxuf) like .47 or something, maybe 1uf, see if it stops.

Re: Whats wrong? bad misfires, jumpy tach
 

Ya, output of the Crane may be to sensitive or strong for a stock tach. Caps will take the spikes out of that.

Re: Whats wrong? bad misfires, jumpy tach
 

they're probably square wave like that of my msd. you need to run a tach like auto METER not auto GAGE which isn't compatible with that form of signal

Re: Whats wrong? bad misfires, jumpy tach
 

A new Beck/Arnley one costs about $45. ;)

Re: Whats wrong? bad misfires, jumpy tach
 

They make good repro parts, or sell repackaged OEM ones at a discount. I wouldn't run anything other than a Honduh igniter.

Replacing the whole distributor usually means cheapshit chinese reman distributors which are the LAST thing you want on a turbo car. Advance Auto Parts quality igniters are problems waiting to happen. Just steal a used OEM one out of any other HondAcura of the same era, or go Beck Arnley.

Re: Whats wrong? bad misfires, jumpy tach
 

well, no need to buy one, it wasn't the ignitor.

dude that had the car before me uninstalled some msd or something, and gave the wires the nagger style shove the wire under the screw treatment. well one wire had broken off, and was just touching on and off of the contact.

noticed it when hitting bumps would kill the car.

either way i wouldnt have bought another ignitor, theres about 4 donor distributors sitting in mike's garage.

Re: Whats wrong? bad misfires, jumpy tach
 

That's good to hear.

I've had that problem before. It used to only happen when it was cold out. But it went away when I installed a new ignitor.

When are you bringing that bad boy to the races? I am going tonight with my buddy and his Nissan/Chevy... he's looking to hit 9's tonight!

Re: Whats wrong? bad misfires, jumpy tach
 

Fook owned himself.






























Again.

Re: Whats wrong? bad misfires, jumpy tach
 

Care to explain your mindless banter? I'm not the one that ------ rigged it smart guy.

Never.

Re: Whats wrong? bad misfires, jumpy tach
 

Eh, I was just being a smartass because I liked you better when we sniped at each other a bit. Just make a rude remark, and let it go.

Re: Whats wrong? bad misfires, jumpy tach
 

I'll fist your sister.

Re: Whats wrong? bad misfires, jumpy tach
 

ah that is better

Re: Whats wrong? bad misfires, jumpy tach
 

See? I am not the only one who feels this way. ;)

Re: Whats wrong? bad misfires, jumpy tach
 

Hey Jd. what do you think about my jumpy tach problem. Would putting a capacitor in the line work like some were saying? It can't be the ignitor because I can put the stock coil back and it's fine.

I noticed when it gets real spastic it'll actually mess up my cruise control.
I'm afraid it's gonna be a problem when I go and try to start tuning the car.

Re: Whats wrong? bad misfires, jumpy tach
 

yes and no, it may or may not work with the tach you're using. a good brand name (ie auto meter) will read the square wave outputs of aftermarket and high performance tach signal, and should not be jumpy
( http://www.fieros.de/en/articles/tachfilt.html )
http://www.fieros.de/gif/tachfilter.gif
tach filter schematic
http://www.fieros.de/jpg/tachfilter.jpg

edit: vette tach filter, pretty much all the same, and it's only $25:
http://www.rodneydickman.com/CorvetteTachFilter.html

Re: Whats wrong? bad misfires, jumpy tach
 

Stock coil has nothing to do with ignitor.

The tach output from the ignitor is a synthesized output originating from the ignitor - it is a different circuit from the one that drives the coil, but once it goes power flows differently in the ginitor and it typically takes a complete ---- within 5-10K miles, sometimes less.

You either have ignitor problem or loose/shoddy thermostat housing ground.

Re: Whats wrong? bad misfires, jumpy tach
 

Thanks for the advice man. I guess I'll swap it out and see what happens. I saw something about it in the wiki about removing the ignitor when you have an msd or crane ignition. But I didn't really understand it.

http://www.pgmfi.org/twiki/bin/view/...torReplacement

Re: Whats wrong? bad misfires, jumpy tach
 

Yah, you run that circuit when you are a stupid ------- dildo and waste money on an MSD box, and want to save yourself from the embarrassment of continual igniter failure. It still doesn't address the fact that the MSD box itself is known to fail, or that the MSD box gives *zero* performance increase, although significant power losses due to MSD boxes have been documented, but since MSD warranties their miscegenated product for life dildos buy them and are happy.

Re: Whats wrong? bad misfires, jumpy tach
 

*L* I take it someone has had a few fosty beverages tonight.

Re: Whats wrong? bad misfires, jumpy tach
 

post dynos or

http://pages.cpsc.ucalgary.ca/~salmond1/drowning.jpg

in a nice vat 'o aids :6

Re: Whats wrong? bad misfires, jumpy tach
 

Most of the HT Tuenarboi crew are douches, but do a post history search from Tony Palo, John @ LHT in Tampa, or Jeff Evans. All of those guys know their ---- and say stock Honduh ignition until 400, Blaster coil to 500, and then they push COP or raised voltage on primary windings. There have been several dyno charts documenting power losses of 40 whp at 400 whp level. I've pushed 500 on stock coil, plugs die every cold warmup due to glazing, but no need for an MSD in my experience. There are plenty of useful things I could buy with MSD money, Holmes. ;)

Regardless, it's common sense if you've basic digital under your belt. Ignition output signal timing is pretty ------- molested, between distributor sensors --> ECU where the ECU converts analog to digital signal at some undisclosed point on the sine wave --> igniter --> MSD intercepts igniter output and proceeds to recalculate what it wants to do with the timing based on "need" for multiple spark bullshit --> coil.

Re: Whats wrong? bad misfires, jumpy tach
 

JD your the ------- man!!
I grabbed an ignitor from the junkyard today and switched it out with the one on the car. The tach is fine now it's perfect! I guess it was the ignitor all along.

Re: Whats wrong? bad misfires, jumpy tach
 

Eh, I'm merely a good mechanic, decent electronics hobbyist, and a solid observer. Exposure to three guys in my circle who are either ex-dealer techs or were raised by one, and the occaisional 4 am drunk as a skunk discussion with Blundell on Honduh ignition logistics with an eye to fitting something radically different in the stock components' place, and being an old crusty ---- kinda cement the deal.