2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

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Old Dec 19, 2007 | 10:27 PM
  #1  
t2josh's Avatar
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T2** rise of the rx-7
 
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From: highfill, arkansas
Ignition check, still having problems

ok so i bought a car from a person on here about 2 months ago and just got it about 2 weeks ago and because of the weather i just got to lookin at it today. well it died 45 miles after i bought it. we replaced the fuel filter, and when we turned it over fuel poured out of the line so we know the pump works, we checked the sparked plugs and they werent gettin any spark, they were pretty nasty so we replaced them and still no spark, we check the coils and all of them were between the designated resistance and all the coils are gettin 12+ volts, i think i have narrowed it down to a crank angle sensor, ignition module or the igniter, anybody have any ideas on what else it could be or what direction i should go from here
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Old Dec 19, 2007 | 10:44 PM
  #2  
killahrx7's Avatar
dyno queen potentials
 
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i've never seen a crank angle sensor go bad but there's a first for everything. what year is this car? oil metering pump might have gone bad too if its 89 and up. not too sure if it would stop the car from starting though.
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Old Dec 19, 2007 | 10:51 PM
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t2josh's Avatar
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T2** rise of the rx-7
 
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From: highfill, arkansas
oh sorry i left that out, its an 87 TII and i must also add the before it ran and then mysteriously wouldnt start, it died twice while driving for a few sec. but as soon as i depressed the clutch and dumped it, it would regain power and run again
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Old Dec 21, 2007 | 01:45 PM
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From: Rohnert Park CA
Has a compression check been done?

And your bump has been deleted. Bumps are forbidden here in the 2nd gen technical section.

And next time, try a real thread title... one that actually has a description of the problem or question about the problem... useless titles will get you useless to no replies.
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Old Dec 21, 2007 | 01:53 PM
  #5  
t2josh's Avatar
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T2** rise of the rx-7
 
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From: highfill, arkansas
I did have a real thread title (Ignition checked, still having problems), which no one responded to either, so i got frustrated and made this post.
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Old Dec 21, 2007 | 01:59 PM
  #6  
rx7vadim's Avatar
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Why dont you use a borrowed coil? checks if that helps. Then i would check if injectors r clicking while cranking, if not then ECU.
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Old Dec 21, 2007 | 02:11 PM
  #7  
Icemark's Avatar
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From: Rohnert Park CA
Originally Posted by t2josh
I did have a real thread title (Ignition checked, still having problems), which no one responded to either, so i got frustrated and made this post.
creating multiple postings on the same question is very bad... besides pissing off the moderators of the section it may be one of the reasons you probably didn't get helped

Threads merged.

BTW: again bumps are forbidden here in the 2nd gen technical section. You had multiple bumps in between the two threads. As a great big hint, many people don;t bother to even look at a thread that has a half dozen replies. If the replies are all your bumps, without opening the thread, it looks like you have been getting help already.

So your bumps waste space on the board, they delay an actual helpful response and they make you look like an impatient immature kid. All things that your probably don't want.
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Old Dec 21, 2007 | 02:24 PM
  #8  
t2josh's Avatar
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T2** rise of the rx-7
 
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From: highfill, arkansas
Originally Posted by rx7vadim
Why dont you use a borrowed coil? checks if that helps. Then i would check if injectors r clicking while cranking, if not then ECU.
The coils seem to be fine, besides i don't know anyone within 150miles who owns a FC, so borrowing one would be difficult, I'll check the injectors next time i get a chance to work on it.

I havn't checked compression myself, but the previous owner siad it had been rebuilt 30K miles ago.

Sry bout the dbl post, i wasn't trying to **** you off
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Old Dec 21, 2007 | 02:30 PM
  #9  
Icemark's Avatar
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From: Rohnert Park CA
Originally Posted by t2josh
The coils seem to be fine, besides i don't know anyone within 150miles who owns a FC, so borrowing one would be difficult, I'll check the injectors next time i get a chance to work on it.
Probably not even related to the problem and you are probably barking up the wrong tree even looking at the ignition system based on your other posts (all now combined in this thread).

I havn't checked compression myself, but the previous owner siad it had been rebuilt 30K miles ago.
,so if he told you that, he really meant either it has never been rebuilt, or it was really rebuilt 60K miles ago... either way it means nothing if you have not actually tested it. Have a compression check done.

Sry bout the dbl post, i was trying to **** you off
Not smart to **** off a admin or moderator
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Old Dec 21, 2007 | 03:06 PM
  #10  
t2josh's Avatar
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T2** rise of the rx-7
 
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From: highfill, arkansas
i typed the wrong word, i meant wasn't, not was, thast why i edited it as soon as i noticed
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Old Dec 21, 2007 | 03:27 PM
  #11  
blwn rtr 89''s Avatar
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gonna need more info, to offer any sound advice. sound stupid, but did u make shure u put gas in the tank?
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Old Dec 21, 2007 | 03:36 PM
  #12  
t2josh's Avatar
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T2** rise of the rx-7
 
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From: highfill, arkansas
What more info do you need ?

The tanks half full, and i know the fuel pump works, while i had the fuel filter off i turned it over a couple times to make sure.
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Old Dec 21, 2007 | 03:37 PM
  #13  
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so for sure NO SPark?? Sorry man, but Your info is lacking.

You checked fuel and spark, got no spark so you went with the CAS??

take a video of the symtoms and post it. We're in the 21st century fellas, get with the times. If you can't describe things well enough for others to comprehend then TAKE A VIDEO!
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Old Dec 21, 2007 | 03:44 PM
  #14  
t2josh's Avatar
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T2** rise of the rx-7
 
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From: highfill, arkansas
Phoenix7, I pulled the plug out, put the wire back on, grounded the plug and turned over a few times, no visible spark.....

loudazzrx7, i would try that but there doesn't seem to be alot of ppl in the South East forum
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Old Dec 21, 2007 | 03:46 PM
  #15  
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main relay? Bad plugs/wires?
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Old Dec 21, 2007 | 03:50 PM
  #16  
t2josh's Avatar
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T2** rise of the rx-7
 
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From: highfill, arkansas
The plugs where nasty dirty, so i replaced them still no spark, so i'm hoping that it could just be the wires, i prolly won't get a chance to work on it till after christmas,

Havan't checked the main relay either, i'll do that when i get new wires..

Thanx for the help guys
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Old Dec 21, 2007 | 03:58 PM
  #17  
blwn rtr 89''s Avatar
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From: Americas High Five
just because the spark is not visiable dose not mean its not there, theres 2 wires to the front coil pack and 1 for the rear coil pack check those to make shure they are not severed, if even 1 wire is disconnected the car will not start.
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Old Dec 21, 2007 | 09:29 PM
  #18  
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From: lillington, nc
check in your interior cabin fuse box, there is a 15 amp engine fuse in there that will casue a no spark condition if blown.

(and yes I am still looking for the thottle body...)
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Old Dec 22, 2007 | 06:08 AM
  #19  
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^ I was going to suggest the fuse too. You beat me to it
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Old Dec 22, 2007 | 10:23 AM
  #20  
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Engine, Not Motor
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Do you have 12V at the black/yellow wires at the ignitors when the key is set to IGN? If not, then it's likely the ECU is receiving no power.
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Old Dec 22, 2007 | 10:56 AM
  #21  
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ive seen CAS' go bad and deliver the same exact thing. its amazing how people refuse to believe the CAS can go bad. it's probably one of the msot sensitive ignition components in the whole engine bay, if it's off by .01 of an inch it'll mess **** up.

kevin.
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