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> Diagnose no start, Update: Need Relay board -> 74 2.0L
boxsterfan
post Jul 4 2014, 01:47 PM
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On my way home on the freeway last night, my 74 2.0L just died travelling along at 70 MPH. Had her towed home.

Looking at it today, it appears there is no spark. If I turn the key, I can hear the fuel pump so seems like I got power there. I have a newer Bosch coil from PP that I put in a few months ago (it's one of those silver looking ones but a Bosch unit). I replaced the coil back with the old one and still no start. Car cranks, but no fire.

The car has Pertronix in it. I suspect this is what died. Does that sound right to the folks here?
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boxsterfan
post Jul 5 2014, 07:51 PM
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So I finally got the 2.0L started again. Fuel pump not getting power is the issue.

I think my relay board is bad. The reason I think this is that my AAR is having trouble also (not closing). I had issues with my AAR last fall and ended up replacing with another used one and at the time it didn't fix it. I ended up finding corrosion under the main power relay on the relay board. Cleaned that up and the AAR started working.

So back to today, fuel pump power seems intermittent. AAR power seems intermittent. Took out relay board and cleaned it up on top (had a couple minor little corrosion spots). I believe the two have the relay board in common. I'm feeling like this is the likely cuplrit anyways.

And another odd note if it helps:

The red "brake light" (normally seen lit when emergency brake is engaged) has been always "on" in my car for about 6 months. Now, it likes to just blink on/off all the time. When it stayed always on, it would also blink in conjunction with a turn signal if that was engaged. Also, the blinking on/off just started and of course this is what started this thread (car died on the highway).

Going to put a WTB up for a relay board. Can you get these new?
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boxsterfan   Diagnose no start   Jul 4 2014, 01:47 PM
Jeff Bowlsby   Those are notorius for dying. Try a set of points...   Jul 4 2014, 02:12 PM
Mblizzard   Have you verified the lack of spark? Just checkin...   Jul 4 2014, 02:15 PM
boxsterfan   Have you verified the lack of spark? Just checki...   Jul 4 2014, 02:23 PM
Mblizzard   If you work alone a lot set yourself up a remote s...   Jul 4 2014, 02:45 PM
boxsterfan   So I checked for spark by pulling the #1 plug wire...   Jul 4 2014, 06:16 PM
Bartlett 914   So I checked for spark by pulling the #1 plug wir...   Jul 4 2014, 06:25 PM
Java2570   Check the ground wire that runs between the points...   Jul 4 2014, 07:17 PM
boxsterfan   Check the ground wire that runs between the point...   Jul 4 2014, 08:00 PM
Mblizzard   Ok some good suggestions. But I would check the w...   Jul 4 2014, 07:57 PM
boxsterfan   Ok some good suggestions. But I would check the ...   Jul 4 2014, 08:03 PM
boxsterfan   I went at looked at the ground strap on the contac...   Jul 4 2014, 09:02 PM
Java2570   Ground in dizzy appears ok.....pretty dirty in the...   Jul 4 2014, 09:43 PM
boxsterfan   Ground in dizzy appears ok.....pretty dirty in th...   Jul 4 2014, 10:04 PM
Jeff Bowlsby   I should have an extra set of points if you need t...   Jul 4 2014, 10:28 PM
boxsterfan   So this morning, I checked over everything again: ...   Jul 5 2014, 12:13 PM
Jeff Bowlsby   http://members.rennlist.com/pbanders/FPChecklist_f...   Jul 5 2014, 12:26 PM
Bartlett 914   Spray some starter fluid or brake cleaner in the i...   Jul 5 2014, 12:45 PM
Java2570   The fuel pump should kick on for a second or so wh...   Jul 5 2014, 02:11 PM
boxsterfan   So I finally got the 2.0L started again. Fuel pump...   Jul 5 2014, 07:51 PM
Java2570   I believe the AAR circuit is connected to the fuel...   Jul 5 2014, 08:00 PM
boxsterfan   I believe the AAR circuit is connected to the fue...   Jul 5 2014, 08:11 PM
Mike Bellis   The brake light warning circuit is active; Blinkin...   Jul 5 2014, 08:05 PM
boxsterfan   The brake light warning circuit is active; Blinki...   Jul 5 2014, 08:10 PM
boxsterfan   A follow up question about fuel pump power: So lo...   Jul 6 2014, 03:33 PM
Dave_Darling   Best guess is the PO wired the pump to a switched ...   Jul 6 2014, 10:33 PM
Tom   Easy test - pull the fuel pump relay on the relay ...   Jul 7 2014, 12:15 AM
boxsterfan   After I replace my relay board and look for any ot...   Jul 7 2014, 09:30 PM
Garold Shaffer   Sent you a PM, but before you go replacing the fue...   Jul 7 2014, 11:19 PM
boxsterfan   Sent you a PM, but before you go replacing the fu...   Jul 8 2014, 08:19 AM
Dave_Darling   I'm starting with the relay board (heck its 4...   Jul 8 2014, 11:49 AM
Java2570   If your fuel lines haven't been replaced, do i...   Jul 8 2014, 09:25 AM
boxsterfan   If your fuel lines haven't been replaced, do ...   Jul 8 2014, 09:15 PM
ClayPerrine   This should help with the fuel pump troubleshootin...   Jul 8 2014, 02:41 PM
boxsterfan   This should help with the fuel pump troubleshooti...   Jul 8 2014, 09:16 PM


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