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No spark problem |
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Page 123 4> |
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Uncle Ishy 
AMC Fan 
Joined: Jun/10/2021 Location: Wisconsin Status: Offline Points: 5 |
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 Topic: No spark problemPosted: Jun/10/2021 at 2:55pm |
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Hello I am new to the site I have a 1971 AMC javelin with the 360 I have no spark I have replaced starter solenoid the ignition coil, cap, rotor, points, plugs and wires, voltage regulator,and the ignition relay I have 12.1v both pegs off the coil and still no spark oh and the car will not turn over by the key it will only crank by jumping the starter solenoid any helpful tips would be awesome I'm at my wits end have been working on those for 3 days in a row with no luck
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304-dude
AMC Addicted 
Joined: Sep/29/2008 Location: Central Illinoi Status: Offline Points: 9082 |
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Posted: Jun/10/2021 at 3:10pm |
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Obtain a TSM, they are handy.
I assume a grounding issue. Check engine ground at the motor mount and ground cable from battery to engine. Points set at .170" ish should be in the ball park. Check ignition switch on the steering column for proper operation. They become crusty with age, and wear out. I had my 73 Javelin ignition switch harden with time, from California heat in the mid 80s. Roughly 10 years since driven off the line. |
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71 Javelin SST body
390 69 crank, 70 block & heads NASCAR SB2 rods & pistons 78 Jeep TH400 w/ 2.76 Low 50/50 Ford-AMC Suspension 79 F150 rear & 8.8 axles Ford Racing 3.25 gears & 9" /w Detroit locker |
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Heavy 488
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Joined: Apr/27/2019 Location: In the Status: Offline Points: 3553 |
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Posted: Jun/10/2021 at 3:16pm |
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Does that year have a seatbelt interlock?
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Midnight Rambler
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Joined: Jan/17/2011 Location: SoCT Status: Offline Points: 1670 |
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Posted: Jun/10/2021 at 3:17pm |
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Would Uncle Ishy be able to jump the starter solenoid if the neutral safety switch was bad or mis-aligned? Anyone have a wiring diagram?
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 '66 American 440 Convertible 290/M-40/AMC 20 3.15/PS/PB '04 Jeep Wrangler X Rocky Mountain Edition 4.0 5sp |
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Midnight Rambler
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Joined: Jan/17/2011 Location: SoCT Status: Offline Points: 1670 |
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Posted: Jun/10/2021 at 3:18pm |
Similar to my thought process!
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'66 American 440 Convertible 290/M-40/AMC 20 3.15/PS/PB '04 Jeep Wrangler X Rocky Mountain Edition 4.0 5sp |
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304-dude
AMC Addicted
Joined: Sep/29/2008 Location: Central Illinoi Status: Offline Points: 9082 |
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Posted: Jun/10/2021 at 3:57pm |
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74 on up has interlock. 73 has the buzzer only. 71 are like previous years. He said spark issues not crank issues. If cranking does not happen in park and only works in Neutral, the neautral saftey switch is the problem. ENGINE Ground issues will not allow coil to collapse the field when points close... thus no spark.
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71 Javelin SST body
390 69 crank, 70 block & heads NASCAR SB2 rods & pistons 78 Jeep TH400 w/ 2.76 Low 50/50 Ford-AMC Suspension 79 F150 rear & 8.8 axles Ford Racing 3.25 gears & 9" /w Detroit locker |
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Heavy 488
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Joined: Apr/27/2019 Location: In the Status: Offline Points: 3553 |
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Posted: Jun/10/2021 at 4:30pm |
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Says car only cranks by jumping solenoid also.
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mstrcrftr
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Joined: Jul/12/2010 Location: houston Status: Offline Points: 2066 |
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Posted: Jun/10/2021 at 4:43pm |
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after all of that.. i would suggest you pull the distributor cap and see if the rotor moves when cranking.
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Uncle Ishy
AMC Fan
Joined: Jun/10/2021 Location: Wisconsin Status: Offline Points: 5 |
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Posted: Jun/10/2021 at 5:10pm |
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Rotor does move while cranking from the starter solenoid still have nothing off of the ignition can turn all power on by the ignition but will not crank by the ignition
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ramblinrev
Moderator Group 
Joined: Dec/28/2008 Location: Wisconsin Status: Offline Points: 11538 |
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Posted: Jun/10/2021 at 6:01pm |
No., all '74, only on the interlock.
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74 Hornet Hatchback X twins (since 1977)
62 American Convertible (still worth the $50 I spent in 1973!) AMCRC #513, AMO #384 70 AMX 360 4-speed (since 1981) |
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Heavy 488 wrote: