Just replace my factory Tachometer in my 78 Camaro with an updated factory Tachometer and not getting single, or not proper response, I do have a new circuit board, messed up old one re install cluster when replace dashboard. Could it be bad or weak signal from distributor
Easy tests for HEI system: 1. Test for power at the pink BAT terminal. You should have battery voltage w/ the key in the start and RUN positions. 2. Connect the ground side of your test lamp to the battery POSITIVE cable. Probe the TACH terminal on the dist. cap while a helper attempts to start the engine. The test lamp should blink repeatedly as the engine cranks. No blink= bad module or pickup coil. Further testing is required to pinpoint the problem. Blink but no spark = bad ignition coil. 3. Remove the cap & rotor. Remove the green & white leads from the module. Connect your ohmmeter to the green & white leads. You should have approx. 800-1500 ohms depending on the ambient temperature. Open circuit (infinite ohms) = bad pickup coil. Wiggle the green & white leads as you test. Ohm reading should remain constant if the leads are good. If the reading varies as the leads are wiggled, the pickup coil is bad. You'll often find broken pickup coil leads this way. 4. DVOM (meter) still connected to green & white leads. Set your DVOM to AC VOLTS. Have a helper crank the engine as you watch the AC VOLTS reading. A good pickup coil will produce about 3V AC when cranking. Less than approx. 2V AC indicates a bad pickup coil.
Thank you man this was extremely helpful. Just installed a new distributor in my 1988 toyota corolla and it has something like a hei like yours. Only 2 wires go into it. There's a coil in there too so I really hope this works and doesn't fry my new 140 dollar distributor
Thank you for the info! I’m at a loss, i did all the tests about a dozen times now, everything tests ok but I still can’t get spark. It’s getting proper voltage and signal but just won’t spark
I I assume you have an HEI. First, check the wire that connects to the coil from your ignition with a volt meter. With the key on, you should get 12 volts. If your coil checks out good, then the problem is your ignition module has crapped out. I had a brand new one work for like 20 minutes and it crapped out on the highway. Had to get the car towed home.
Things don’t just keep breaking. All of a sudden I am having the same issues I had wen I started Weibo, faaa geeet aviation school , I never had so many issues even with ford
Great video! Helped me find my HEI issues! Thanks 👍👍👍
That last test should be done. When you buy a new one.
Save a big hassle if you get a “DOA” one.
Thanks for sharing by the way!
Larry
Just replace my factory Tachometer in my 78 Camaro with an updated factory Tachometer and not getting single, or not proper response, I do have a new circuit board, messed up old one re install cluster when replace dashboard. Could it be bad or weak signal from distributor
good job
Easy tests for HEI system:
1. Test for power at the pink BAT terminal. You should have battery voltage w/ the key in the start and RUN positions.
2. Connect the ground side of your test lamp to the battery POSITIVE cable. Probe the TACH terminal on the dist. cap while a helper attempts to start the engine. The test lamp should blink repeatedly as the engine cranks. No blink= bad module or pickup coil. Further testing is required to pinpoint the problem. Blink but no spark = bad ignition coil.
3. Remove the cap & rotor. Remove the green & white leads from the module. Connect your ohmmeter to the green & white leads. You should have approx. 800-1500 ohms depending on the ambient temperature. Open circuit (infinite ohms) = bad pickup coil.
Wiggle the green & white leads as you test. Ohm reading should remain constant if the leads are good. If the reading varies as the leads are wiggled, the pickup coil is bad. You'll often find broken pickup coil leads this way.
4. DVOM (meter) still connected to green & white leads. Set your DVOM to AC VOLTS. Have a helper crank the engine as you watch the AC VOLTS reading. A good pickup coil will produce about 3V AC when cranking. Less than approx. 2V AC indicates a bad pickup coil.
Did you forget to turn off your Popcorn making machine, nice video ;-)
Thank you man this was extremely helpful. Just installed a new distributor in my 1988 toyota corolla and it has something like a hei like yours. Only 2 wires go into it. There's a coil in there too so I really hope this works and doesn't fry my new 140 dollar distributor
Thank you for the info! I’m at a loss, i did all the tests about a dozen times now, everything tests ok but I still can’t get spark. It’s getting proper voltage and signal but just won’t spark
I I assume you have an HEI. First, check the wire that connects to the coil from your ignition with a volt meter. With the key on, you should get 12 volts. If your coil checks out good, then the problem is your ignition module has crapped out. I had a brand new one work for like 20 minutes and it crapped out on the highway. Had to get the car towed home.
I hope the guy on camera got the help he needed... Seems awfully depressed !! 😞
That was funny, distributors have a way of making you melancholy.
You didn't show how to test the module or condenser inside the distributor.
Thx u
Things don’t just keep breaking. All of a sudden I am having the same issues I had wen I started Weibo, faaa geeet aviation school , I never had so many issues even with ford
That's how you test it, distributor in engine
Amazing and helpful you are great !!! I check my HEI Distributor primary coil it shows 2 OMS is that bad sir ??
The video would have been perfect without that background noise
It is raining, he says it at 5:13.
Aussie
I don’t know if the re t ar Jutes polland boii are harassing me, or I have bad luck.
I rather live in a poor country, and know wat is mine is mine , with freedom and normality , and many more things.
I don’t have time for joe c mafia bs , bs people batting on some with serious goals.
If you’re making a video under a tin roof, in a hailstorm….. Maybe talk louder, more energy, and move quicker. That was painful