Cold start ignition drop out
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Read the manual to see if your question is answered there before posting. Many users will not reply if the answer is already available in the manual.
If your question is about troubleshooting, configuration, or tuning, you MUST include your processor type (MS-I or MS-II) and code version in your post. If your question is about PCB assembly or modifications, you must also include the main board version number (1.01, 2.2 or 3.0). For tuning/troubleshooting questions, please attached a datalog and your MSQ file to your post.
If you have questions about MS1/Extra or MS2/Extra code configuration or tuning, please post them at www.msextra.com Such questions posted here will be moved to: a temporary MSextra sub-forum, where they will be removed after 7 days
The full forum rules are here: Forum Rules, be sure to read them all regularly.
Re: Cold start ignition drop out
Well I swapped the MS over to the VR circuit but I won't be able to test until tomorrow after work.
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convertables_10
- Helpful Squirter
- Posts: 104
- Joined: Wed Jul 21, 2010 9:18 am
Re: Cold start ignition drop out
Logged a few miles and some starts since saturday and so far so good. 
Lilski did you check your plugwires? Mine was inducing some noise in the signal. Im still on my autozone mudule #dr133. Also check out the transistor mod it me benificial to you as well.
What all are you doing exactly when you go to vr? I might do that on my other truck but then again i might not. Just gathering ideas and learning at this stage.
Lilski did you check your plugwires? Mine was inducing some noise in the signal. Im still on my autozone mudule #dr133. Also check out the transistor mod it me benificial to you as well. What all are you doing exactly when you go to vr? I might do that on my other truck but then again i might not. Just gathering ideas and learning at this stage.
My MegaSquirt build 85 S-15 Jimmy 350/th350 TPI MS2 2.905 hei 8pin
1983 s-10 350 tpi injection MS2 soon
1984 s-10 Blazer 350/th350 and will get an MS2 tbi.
1973 Nova 5.3/glide 76mm turbo. MS3X
1983 s-10 350 tpi injection MS2 soon
1984 s-10 Blazer 350/th350 and will get an MS2 tbi.
1973 Nova 5.3/glide 76mm turbo. MS3X
Re: Cold start ignition drop out
I used the wires from the module as per the alternative trigger circuits linked from HEI page.Did you run the vr circuit off of the module or the 2 wires in the distributor?
Re: Cold start ignition drop out
Well it is fixed. I went to VR and it works like a charm.
What I did is I went to RadioShack and got some microphone wire which has two twisted wires and has a foil shield and then a copper braided shield. I connected the one wire to pin 24 and the other ground wire with the shield to pin 2. I then put the pin 24 to the P pin and the pin 2 ground to the N pin. I also found my ground was terrible as the solder broke when I touched it. So I redid the grounds and found the fuel pump was grounded with everything else so I separated that and grounded it to the firewall.
I fired it up and it idled around 1200 with my current IAC settings and no sign of noise. I drove it for about 10 minutes without a single reset all the way up to 5000 RPM.
My problem before using the VR circuit was I didn't have the ground run to the sensor. I assumed it was connected to ground through the distributor but I was wrong. With the two wires connected properly the VR pots are all the way counterclockwise with no sign of any hiccups.
Thanks Silverado for the idea to try VR again.
Also an FYI everything is new from the rotor to the plugs on my TA.
What I did is I went to RadioShack and got some microphone wire which has two twisted wires and has a foil shield and then a copper braided shield. I connected the one wire to pin 24 and the other ground wire with the shield to pin 2. I then put the pin 24 to the P pin and the pin 2 ground to the N pin. I also found my ground was terrible as the solder broke when I touched it. So I redid the grounds and found the fuel pump was grounded with everything else so I separated that and grounded it to the firewall.
I fired it up and it idled around 1200 with my current IAC settings and no sign of noise. I drove it for about 10 minutes without a single reset all the way up to 5000 RPM.
My problem before using the VR circuit was I didn't have the ground run to the sensor. I assumed it was connected to ground through the distributor but I was wrong. With the two wires connected properly the VR pots are all the way counterclockwise with no sign of any hiccups.
Thanks Silverado for the idea to try VR again.
Also an FYI everything is new from the rotor to the plugs on my TA.
Re: Cold start ignition drop out
Well it worked directly off the VR sensor for a little while and it started to act up again. No spikes this time but signal loss. So today I put the pin 24 wire to the pin R on the module and it worked and hasn't missed a beat all night. More driving is needed but it looks like I am done for now and I can finish tuning.