I'm having trouble getting my TPI injected 283 Chevy V8 to fire up. I don't see the engine RPM move (in MT) during cranking. The 'not cranking' box in the lower left screen slowly toggles between 'cranking'. I've read the manual but have not found the right info yet.
I'm using MS-II and a 7 pin HEI ignition module.
Any suggestions?
Cheers
Cranking/Not Cranking issue
Forum rules
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.
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The full forum rules are here: Forum Rules, be sure to read them all regularly.
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.
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Blown'37
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Re: Cranking/Not Cranking issue
I was having the same problem, after much searching I found it to be a wiring issue. The coil was losing power while cranking. Also you might check to see what your cranking speed is set at in MegaTune, if it is set to high you won't get megatune to recognize it to be cranking. Double check that you are getting spark as well.
Matt.
Matt.
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Blown'37
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Re: Cranking/Not Cranking issue
You wanted to know how I knew that the coil was losing power while cranking. I just hooked my test lite to the 12v in and disconnected the starter so when I turned the key the light would go out. I just had to rewire the 12v wire to a hot while cranking circut.
<Matt
<Matt
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insanezane
- MegaSquirt Newbie
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- Joined: Mon Sep 22, 2008 5:35 pm
Re: Cranking/Not Cranking issue
are you using the optical input or the vr input zane
Re: Cranking/Not Cranking issue
I'm using the hall/optical input circuit per the build instruction 50a in the assembly guide.
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insanezane
- MegaSquirt Newbie
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- Joined: Mon Sep 22, 2008 5:35 pm
Re: Cranking/Not Cranking issue
weird i'm guessing you have already checked the settings in megatune maybe your cable to the megasquirt has a bad connection ran into that on a friends car with the tps wiring bad joint on the db37 plug maybe you could see if the hei will fire a coil itself to be sure it works too. Zane