Car randomly died on me and wont start back up! ( No spark)

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BobWithBoobs
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Joined: Wed Dec 29, 2004 6:27 am
Car: 89 couple with s14 dohc swap.

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got in a crash , (friend did) drove maybye 10 miles and i parked it, came back ot started it ideling fine and it randomly died, just sudenly quit, I chage my whole distributor (sinc ei had a spare one) and still no spark, all the plugs and distributor cap is new , and wires.)

any other ideas?? i also noticed i was running on no coolant ( was full b4 the crash.) but never over heated since i would have noticed and i didnt drive it extencly .

im very pussled let me know if ay of u guys have any ideas or leads...

i have no aceess to pull the codes sinc ei dont have a wideband (its a ob2)

Thanks-johan


180fan
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and your car is what model and year?

Drift-inertia
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see if your ECU is flashing my car did the same and it was the ECU

sleepyRPS13
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no coolant oooh no! mega warpage. your ect was probably saying "hey where's cream fillings"

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fullthrtl_tech
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Car: 93 240sx

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ect doesnt control spark, ect is to put the car into closed loop and adjust afr;s according to coolant temp, so the ect is def not an issue. if u dont suspect the dis. check for power at the coil so on and so forth. process of elimination.

BobWithBoobs
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Car: 89 couple with s14 dohc swap.

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well im getiing a constant 12 volts to the ignition coil..... cheaked to make sure the wire was good, i noticed the rsitor was open, so i replaced it. (have not tried it yet) but i dought it its it though, its the one that sits on the wires to the distrbutor assembly.

i also noticed thats whatever the problem is , is triggerig a relay in the right drivers kickpanel , right by the fuse box, the relay itself is good, now i just need to know what the hell is triggering it to open and close so fast!

anyways if anyone have any idea where can find the scematic on the service manual , please post the page number, id like to be able to back track.. i just seem not to be abke to find the right page.

(btw its the blue cover relay, and my car is a 95.)

Thanks for the help so far! -johan

BobWithBoobs
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Car: 89 couple with s14 dohc swap.

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woaw
driftking666sk wrote:ect doesnt control spark, ect is to put the car into closed loop and adjust afr;s according to coolant temp, so the ect is def not an issue. if u dont suspect the dis. check for power at the coil so on and so forth. process of elimination.
wait , the etc triggers a ground right? How do i reset my etc , it could be that y ecu not wanting to ground that paticular circuit Cause of temperature misreadings. (i dunno im not too sure about how a cars wire sistem is activated.) but i know for a fact the ecu provide a constant 12 volts and then when to start its supose to ground itself to start the ignition process. or sumthing f that sort.

sleepyRPS13
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driftking666sk wrote:ect doesnt control spark, ect is to put the car into closed loop and adjust afr;s according to coolant temp, so the ect is def not an issue. if u dont suspect the dis. check for power at the coil so on and so forth. process of elimination.
i didnt say that was the problem, it was just a lil humor. but im serious about the warpage.

everybody knows what to check first:battery?fuel?spark?does it crank?blah blah blah...


sleepyRPS13
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did you check the crank angle sensor?

BobWithBoobs
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Car: 89 couple with s14 dohc swap.

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sleepyRPS13 wrote:i didnt say that was the problem, it was just a lil humor. but im serious about the warpage.

everybody knows what to check first:battery?fuel?spark?does it crank?blah blah blah...
baterry is good, alternator is fine cranks fine the fuel pump primes right .... just o spark...

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fullthrtl_tech
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Car: 93 240sx

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BobWithBoobs wrote:woaw wait , the etc triggers a ground right? How do i reset my etc , it could be that y ecu not wanting to ground that paticular circuit Cause of temperature misreadings. (i dunno im not too sure about how a cars wire sistem is activated.) but i know for a fact the ecu provide a constant 12 volts and then when to start its supose to ground itself to start the ignition process. or sumthing f that sort.
Well man its the ECT, which is the coolant temp sensor. Its doesnt control the ground, its a variable resistor which changes with temp=Thermistor. All that does is change resistance values based on temp causing a voltage drop on the return side. The only thing i can tell u for now is to look and see which circuit that realy goes to, it might not even be an issue, relays do weird **** sometimes when a component is failing. if you give me your email ill try to send you some diagrams off of mitchell or alldata when i get a chance. goodluck. Its real hard to help u out not bein there man, but il try

Theres a lot of thing you can check ign. wise. You said the coil has power at it, follow that down to the next spot where you can check such as the dis. Hook a screw driver on the wire and ground it while someone is cranking it and look for spark. Its a giant process of eleimination. try your best and dont give up. If you are getting power to the coil that far up htere is not that much of the secondary ign. system that can be checked. Like he said also did u check the crank sensor

sleepyRPS13
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while looking at the fsm i didnt even know the ignition coil & power transistor is built into the (distributor).hah

fsm says: possible cause-harness or connectors-power transistor unit (connects to ecm and coil)-resistor (top/front of engine connects to coil & ecm)-camshaft position sensor-camshaft position sensor circuit

ign coil has power going to it but i would check resistance on the primary & secondary coils too.

dl the fsm ... shows your everything step by step.


BobWithBoobs
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Car: 89 couple with s14 dohc swap.

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sleepyRPS13 wrote:while looking at the fsm i didnt even know the ignition coil & power transistor is built into the (distributor).hah

fsm says: possible cause-harness or connectors-power transistor unit (connects to ecm and coil)-resistor (top/front of engine connects to coil & ecm)-camshaft position sensor-camshaft position sensor circuit

ign coil has power going to it but i would check resistance on the primary & secondary coils too.

dl the fsm ... shows your everything step by step.
i have it , ive had for a while, just hard to use. and ive been using it... The resistor was shot , im replacing it as we speak ad then ill crank it tomrow and let u guys know... Thaks so far

sleepyRPS13
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bobwithboobs: is it running now?

did you ever checked your ckp sensor?

BobWithBoobs
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no sir, waiting for , what was listed as : a "ingnition condencer" witch i have no clue why its called that since its basicaly a resister. i double cheaked and the mecanic guy said that what it was called soo... i ordered it and ill try topick it up tomrow b4 work.

Thanks for helpin! Greatly apreasiated.

BobWithBoobs
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so i put in that socalled condesor in (page ec 109 in SM)... didnt fix a thing, It did! change the tone and frequency of the relay in my car (it now only click everytime it turns a full cycle, a short burst) but still no start.

i realy wish i knew what was up.

BobWithBoobs
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WOOT! part is comming in today!! cant wait!

sleepyRPS13
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a condenser basically is a catch-can that helps boost the primary & protection device from arcing on the points.

BobWithBoobs
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part hould coem in on monday (hopefully) ill keep u updated

BobWithBoobs
Posts: 318
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Car: 89 couple with s14 dohc swap.

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the resistor didt do it.

im so lost, i realy wish i could pull the damn codes!!

sleepyRPS13
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check with the ckp sensor, yet??

BobWithBoobs
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Car: 89 couple with s14 dohc swap.

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sorry i took a while to respond, i just go back in town...

yea i cheaked everything, it ended up being a fuse that blew, the ignition coil was damaged and had to replace the assembly (n biggie i had another one!)

also i did'nt adjust the timeing right , i actualy set it up exactly backwards on accident soo.... i had to fix that tooo

total fix cost me 50 bucks in labor by a mobile mecanic, (didint know how to fix the timing.)

Thanks every one for helpig me out!!


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