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[ricardo]

New to this site and not sure what I am doing or how to post a problem

[euro911]

A couple more issues to ponder ...

It looks like the voltage at the (+) terminal of your coil is a little low ... 10 volts is at the lower range of acceptable voltage to the primary winding in the coil.

Disconnecting all the wiring from both sides of the coil, you should read approximately 3.5 ohms (3.5 Ω) between the (+) and (-) terminals. Check this on your new coil, then recheck your old coil to see if they're reading the same.

(Note, most electrical parts are not returnable, so you might have a spare coil now).


Another possibility is a bad condenser (aka: capacitor). It is supposed to hold a charge (like a battery) for a short period of time. One method to check it is to disconnect the green wire from the (-) coil terminal, momentarily touch the green wire to the (+) side of your battery. After disconnecting, read the voltage between the green wire and ground with your VOM. You should see a somewhat sustained voltage in the condenser. If not, replace it.



I thought this was asked previously, but didn't see the answer ... have you ever had this car running?

Have you completely purged the fuel system of old gas?

I recently replaced a fuel pump on a 99 VW Beetle that hasn't been running for several years. I drained and cleaned out the fuel tank prior to installing the new pump (it installs inside of the tank), and added a few gallons of fresh fuel, but it still wouldn't start.

I disconnected the supply hose from the injector manifold, energized the pump and let let it flush the entire fuel route from the tank (pumping out approximately 3/4 of a gallon) into a jug, then reconnected the supply hose.

There was still enough old fuel in the supply line to keep it from starting ... once it saw fresh fuel it started right up.

[ricardo]

A couple more issues to ponder ...

It looks like the voltage at the (+) terminal of your coil is a little low ... 10 volts is at the lower range of acceptable voltage to the primary winding in the coil.

Disconnecting all the wiring from both sides of the coil, you should read approximately 3.5 ohms (3.5 Ω) between the (+) and (-) terminals. Check this on your new coil, then recheck your old coil to see if they're reading the same.

(Note, most electrical parts are not returnable, so you might have a spare coil now).


Another possibility is a bad condenser (aka: capacitor). It is supposed to hold a charge (like a battery) for a short period of time. One method to check it is to disconnect the green wire from the (-) coil terminal, momentarily touch the green wire to the (+) side of your battery. After disconnecting, read the voltage between the green wire and ground with your VOM. You should see a somewhat sustained voltage in the condenser. If not, replace it.



I thought this was asked previously, but didn't see the answer ... have you ever had this car running?

Have you completely purged the fuel system of old gas?

I recently replaced a fuel pump on a 99 VW Beetle that hasn't been running for several years. I drained and cleaned out the fuel tank prior to installing the new pump (it installs inside of the tank), and added a few gallons of fresh fuel, but it still wouldn't start.

I disconnected the supply hose from the injector manifold, energized the pump and let let it flush the entire fuel route from the tank (pumping out approximately 3/4 of a gallon) into a jug, then reconnected the supply hose.

There was still enough old fuel in the supply line to keep it from starting ... once it saw fresh fuel it started right up.

Checked the new coil:

+ to - 3.6
+ to primary 8.18
- to primary 8.18
touched condenser to + on battery and got a momentary reading of .1 volts on condenser, then went to 0
The last time I removed the fuel pump I drained all the gas out through the line.
Last week I added fresh gas. I don't know if any residual stays in the tank or if that
would matter.