No Spark. Car cranks, but no spark from ignition coil.

Tiny
RDN49
  • MEMBER
Yes, Timing belt and adjustment both good, ray
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Wednesday, September 20th, 2017 AT 3:09 PM (Merged)
Tiny
MASTERTECHTIM
  • EXPERT
Crank sensor? i forgot this engine had one.


https://www.2carpros.com/forum/automotive_pictures/139033_2carpros_10.jpg

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Wednesday, September 20th, 2017 AT 3:09 PM (Merged)
Tiny
RDN49
  • MEMBER
Thanks for reply; Worked long weekend and am trying to test system again today; Have checked Crank sensor several times and do get proper resistance but will try to see if there is signal change while cranking; Previous tech dropped me after first reply so don't know how long you can stay with me, but do appreciate your help. Thanks, Ray
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-1
Wednesday, September 20th, 2017 AT 3:09 PM (Merged)
Tiny
MASTERTECHTIM
  • EXPERT
Ill stay all the way to the end. Check for ac voltage on crank sensor while cranking. It should have a fluctuating ac voltage
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Wednesday, September 20th, 2017 AT 3:09 PM (Merged)
Tiny
VEGASDOLAN
  • MEMBER
  • 1996 TOYOTA CAMRY
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 189,000 MILES
Electrical problem
1996 Toyota Camry 4 cyl Front Wheel Drive Automatic 189000 miles

My '96 Toyota Camry rolls over like a champ but has literally no spark. We've replaced the distributor, ignitor, fuse and relay boxes, relays, fuses, coil, and checked every inch of wiring under the hood by testing it. The crank sensor pulley and computer test out fine. There's fuel coming through but no spark to fire it up.

We've been fiddling with this thing for weeks and still no difference. Please, please, PLEASE someone help me. We're willing to try anything.
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Wednesday, September 20th, 2017 AT 3:09 PM (Merged)
Tiny
RDN49
  • MEMBER
Thanks mucho! Checked Crank sensor connector unplugged from sensor and found no voltage on my digital meter with ignition on or while cranking( I am assuming voltage probably 1-2 volts) It seems I should have something from ecm to sensor? Have not checked same while connected; wires have tight rubber boot at plug. Ray
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Wednesday, September 20th, 2017 AT 3:09 PM (Merged)
Tiny
BMRFIXIT
  • EXPERT
Did you check if the distributor turning as the engine cranking
check wiring harness
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Wednesday, September 20th, 2017 AT 3:09 PM (Merged)
Tiny
RDN49
  • MEMBER
OK, I was able to back probe crank sensor connector while connected and saw 1.6 volts ac and did seem to fluctuate a bit; Tried same with igniter igt wire at connector and saw.01 to.02 and thought saw.05 1x. Now wondering if ecm not just right, or possibly the used igniter I tried is bad? Thanks, Ray
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Wednesday, September 20th, 2017 AT 3:09 PM (Merged)
Tiny
VEGASDOLAN
  • MEMBER
I've checked both but the wiring harness is golden. Every inch of it. And the distributor is spinning like a champ. This car is beating everything out of me.
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Wednesday, September 20th, 2017 AT 3:09 PM (Merged)
Tiny
MASTERTECHTIM
  • EXPERT
Senor cecks out ok. Possible igniter problem. These trouble tree on this thing is so vague and most end up saying install known good part.
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Wednesday, September 20th, 2017 AT 3:09 PM (Merged)
Tiny
BMRFIXIT
  • EXPERT
With key on do you have a check engine light on
if not replace EEC power relay
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Wednesday, September 20th, 2017 AT 3:09 PM (Merged)
Tiny
VEGASDOLAN
  • MEMBER
Where exactly is it located? I've replaced all the relays under the hood so I'm guessing it's some where else?
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Wednesday, September 20th, 2017 AT 3:09 PM (Merged)
Tiny
VEGASDOLAN
  • MEMBER
Never mind. We found it and it tests well. We even swapped it out with the fan relay because we know it works and there's still no spark.
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Wednesday, September 20th, 2017 AT 3:09 PM (Merged)
Tiny
RDN49
  • MEMBER
  • 1996 TOYOTA CAMRY
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 250,000 MILES
Computer problem
1996 Toyota Camry 4 cyl Two Wheel Drive Automatic 250000 miles

Car stalled at hwy speed, was able to restart 1x with repeated cranking, stalled immediate and am now troubleshooting cold wiithout spark and code 1300; CPS, and pick-up sensor test within range as well as coil; Did try new coil, and 2nd igniter(used) with no result; Power at coil and igniter; Distributor turns freely; Have checked connections and all appear ok. Do have multimeter and test light ; Tested negative side of coil with light while cranking and saw only dim light, no pulse; Have not checked igniter plug for pulse; Pick-up sensor plug has 2 pin connector; Igniter outer wires w, wr I believe are igt and igf signal; Is it possible for me to get a good test for igt signal from plug? And also good test at pick-up plug to confirm voltage? Thanks, Ray
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Wednesday, September 20th, 2017 AT 3:09 PM (Merged)
Tiny
DOCFIXIT
  • EXPERT
Hi
try these tests
Disconnect Black 5 pin igniter connector acess ECM behind glove box. With ignition on measure voltage between ground and term. # 3 white/red wire at ECM E 11 connector. Voltage should be 4.5 to 5.5V if not replace igniter if not replace ECM.
Next test Back probe trem. #20 white wire at ECM 11 and ground while cranking if voltage is not.1 to 4.5 replace ECM
Hope this helps
Thanks for donate
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Wednesday, September 20th, 2017 AT 3:09 PM (Merged)
Tiny
RDN49
  • MEMBER
Thanks for prompt reply; I did check voltage at ECM with igniter connector unplugged and all else plugged and got 5V #3 and.6 #20 while cranking. All components under hood are OE and have not been able to check air gap on distr, as I do not have proper guage. Thanks, Ray
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Wednesday, September 20th, 2017 AT 3:09 PM (Merged)
Tiny
DOCFIXIT
  • EXPERT
Hi Ray
Check for open or short to ground on these two circuits
IGF on ECM connector E12 terminal 3 white/red wire and IGF on igniter term 1
IGT on ECM connector E12 term 6 white wire and igniter term 2
Let me know
Check air gap with match book cover.012
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Wednesday, September 20th, 2017 AT 3:09 PM (Merged)
Tiny
RDN49
  • MEMBER
Really appreciate your patience and help; Am I checking each circuit by test probing at disconnected ecm connector and to ground with igniter connected and battery disconnected? Feel air gap is within range; Do notice clicking sound while turning by hand but assume this is normal pu sound. Thanks Doc
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Wednesday, September 20th, 2017 AT 3:09 PM (Merged)
Tiny
KHLOW2008
  • EXPERT
Hi Ray,

Have you solved the problem?
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Wednesday, September 20th, 2017 AT 3:09 PM (Merged)
Tiny
RDN49
  • MEMBER
Thanks for reply, No have not solved, still stumped; Did try rebuilt distr, no action; verified signal from crank sensor, igt voltage is very low? Found ecm online with matching numbers and ordered but was cancelled, apparently not available now. Ray
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Wednesday, September 20th, 2017 AT 3:09 PM (Merged)

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