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Older Activity
2 Hours Ago
Dieselsj
started a thread
7427 AE overview
in
GM EFI Systems
Hi, Are there any good tutorials on the AE functions for the 7427? I read the existing paper on the earlier ECUs, but I can't equate the...
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0 replies | 14 view(s)
5 Hours Ago
TriumphR3
replied to a thread
help with some connector ID
in
GM EFI Systems
Yep, that’s the fuse to the fuel pump. Definitely need that. Looks just like the one on my 88 C1500.
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18 replies | 554 view(s)
5 Hours Ago
stackz
replied to a thread
help with some connector ID
in
GM EFI Systems
finally had a chance to get back out to the upull and they had a 88 and 89 truck with intact harnesses. yup, the connector was a fuse connector. ...
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18 replies | 554 view(s)
6 Hours Ago
Sledhead2
replied to a thread
Running poorly/misfiring, code 33
in
GM EFI Systems
would you be able to test the Dizzy on a distributer machine????
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65 replies | 10796 view(s)
11 Hours Ago
MO LS Noobie
replied to a thread
Newbie - here to learn more
in
Introductions
First of all, since your troubles began when you were welding on your truck, it is very possible that you damaged something inside the PCM. Did you...
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1 replies | 35 view(s)
12 Hours Ago
MO LS Noobie
replied to a thread
Strange Issue
in
GM EFI Systems
Ignition timing, improper firing order, to lean of fuel mixture, are some of the other issues that will cause backfiring through the intake.
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18 replies | 352 view(s)
12 Hours Ago
MO LS Noobie
replied to a thread
Running poorly/misfiring, code 33
in
GM EFI Systems
If you have access to a lab scope, you could "see" the output of the pickup coil
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65 replies | 10796 view(s)
20 Hours Ago
Resin
replied to a thread
Strange Issue
in
GM EFI Systems
It is certainly possible. Would the rotor being backwards cause that? I.E. pointing at wire 1 when #6 is at TDC?
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18 replies | 352 view(s)
20 Hours Ago
steveo
replied to a thread
Strange Issue
in
GM EFI Systems
no even a massive vac leak will not cause a fire. a fire in your throttle body could only be a severely leaking injector (unlikely) or a timing or...
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18 replies | 352 view(s)
20 Hours Ago
Fourjeepin
started a thread
Newbie - here to learn more
in
Introductions
Hi - I have a 1979 CJ7 with a Howell EFI on an AMC360. I added the Howell about 15 years ago and it has been great. Well, it ran open loop for at...
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1 replies | 35 view(s)
21 Hours Ago
1project2many
replied to a thread
Strange Issue
in
GM EFI Systems
So this is a tough situation to help with. It's tough b/c as an experienced mechanic I've gotten used to seeing and thinking of problems in ways...
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18 replies | 352 view(s)
21 Hours Ago
1project2many
replied to a thread
Hey
in
Introductions
Welcome to the site. Lots of folks here are willing to help if you have specific questions.
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1 replies | 33 view(s)
22 Hours Ago
Resin
replied to a thread
Strange Issue
in
GM EFI Systems
A combination of a low battery and bad spark plug wire seems to have been the culprit on the spark issue. I think steveo was right. Now I have a...
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18 replies | 352 view(s)
23 Hours Ago
dave w
replied to a thread
Running poorly/misfiring, code 33
in
GM EFI Systems
7 Pin Module, the 8 Pin Module is similar. The Reluctor / Pickup Coil produce a small AC signal when the distributor shaft is spinning. Perhaps a...
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65 replies | 10796 view(s)
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