 CPU Overhaul |
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| kpax914 |
 Sep 10 2014, 01:20 AM
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#1
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Newbie  Group: Members Posts: 9 Joined: 10-July 14 From: Santee, CA Member No.: 17,610 Region Association: Southern California  |
I have a 73, 1.7 liter with everything new or checks out OK on the Fuel Injection. One culprit left the CPU. I'm in El Cajon Area of San Diego. Any rebuilders, besides sending to PelicanParts?
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Replies
| Tom |
Oct 6 2014, 12:41 AM
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#2
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Advanced Member Group: Members Posts: 2,139 Joined: 21-August 05 From: Port Orchard, WA 98367 Member No.: 4,626 Region Association: None |
If it is running poorly at idle and more throttle causes it to run OK, I would seriously doubt that the ECU is the problem. Before I would buy an ECU, I would pull the injection harness and check all of the wires for good reading between the ECU connector and all of the connectors that go to the various components in the fuel injection system. The age of the wiring and the heat can do bad things to the wires' resistance. I had to replace several of the wires in my fuel injection harness, they were black in color and very brittle and read several ohms between several of the connectors to the ECU connector. Replacing the wires with new wires and reconnecting with new electrical terminals solved the problems I was having, ( poor idle and stumbling when giving throttle ).
Tom |
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Posts in this topic
kpax914 CPU Overhaul Sep 10 2014, 01:20 AM
76-914 Are you sure? Those are pretty much bullet proof i... Sep 10 2014, 08:09 AM
kpax914
Are you sure? Those are pretty much bullet proof ... Oct 5 2014, 08:17 PM
JamesM
...I have exhausted everything else that could be... Oct 6 2014, 10:53 PM Chris Pincetich
If it starts and runs on all 4, but just runs bad... Oct 7 2014, 01:49 PM kpax914
...I have exhausted everything else that could b... Oct 7 2014, 06:14 PM SirAndy Are you sure? Those are pretty much bullet proof i... Oct 6 2014, 01:23 AM boxsterfan Have you read this site?
http://members.rennlist.... Sep 10 2014, 09:14 AM Cap'n Krusty That story is a bit suspect. In the 40 plus years... Oct 5 2014, 09:41 PM stugray
Anyway I hooked up the 2 CPUs and same dproblem w... Oct 6 2014, 08:19 AM pilothyer I think you nailed your problem in your post #4 wh... Oct 6 2014, 08:35 AM 76-914 I have a spare MPS also if you want to check that.... Oct 6 2014, 08:40 AM Dave_Darling I have seen two failure modes so far from the ECU.... Oct 6 2014, 12:17 PM dknechtly I've had the same issue with the fuel pump not... Oct 6 2014, 01:02 PM Johny Blackstain I seem to remember the ECU could also go bad if su... Oct 6 2014, 12:20 PM Drums66 .....It does happen!(CPU failure)but............. Oct 6 2014, 01:15 PM Jacob What do you see when you hook up the vacuum gauge?... Oct 6 2014, 01:46 PM Chris Pincetich I just replaced an ECU for my 1972 914 1.7 with D-... Oct 6 2014, 04:33 PM worn
I just replaced an ECU for my 1972 914 1.7 with D... Oct 6 2014, 08:50 PM kpax914 Hello everybody:
It wasn't the CPU! But a ... Nov 12 2014, 12:31 AM type47
[color=#FF0000]??
But a combo of vacuum leak a... Nov 12 2014, 09:03 AM Racer Chris
[color=#FF0000]??
But a combo of vacuum leak ... Nov 12 2014, 09:09 AM type47
cold start injector mounted on the plenum
OK, co... Nov 12 2014, 09:23 AM 76-914 AA, There across the country. West coasters usuall... Nov 12 2014, 08:29 AM kpax914
AA, There across the country. West coasters usual... Nov 13 2014, 05:31 PM |
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