When I crank my engine over for the first time on a cold start, many times it will not stay running maybe 2 seconds. On the second start it always runs fine. I would like to get it to that point on the first start.
Then if I start the engine hot, it cranks over and starts then the RPM drops way down like it almost wants to stall then returns to a normal idle. This is all within 2 seconds. It seems like it my start up parameters are not quite up to snuff.
Does this sound like my start up injector durations are too small?
Any help is greatly appreciated
Thanks
Please help weird startup quirk
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.
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.
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.
Please help weird startup quirk
Turbo Z24 Cavalier Fully Supported By MS2 v3.57. Finally Running, Dyno commin soon
-
Matt Cramer
- Super Squirter
- Posts: 2951
- Joined: Sat Jul 03, 2004 11:35 am
Re: Please help weird startup quirk
Sounds like you may need a couple tweaks to the afterstart enrichment settings.
-
Underdog51
- MegaSquirt Newbie
- Posts: 5
- Joined: Wed May 26, 2004 10:26 am
- Location: Palm Coast FL
- Contact:
Re: Please help weird startup quirk
My car has a hard time starting when its the first start in some time. Like first start of the day, It will fire then die. If i play with the throttle for a couple of seconds reving it up and down, then it will idle smooth. I can then shut it off immediatly. Then it will fire on its own fine. Same thing if I get the engine all warmed up to like 180-200. Turn the car off. 2 hours later it will still be around 120 or so, but i have to play with the throttle to keep it going then it will idle out smooth. I have tried different ASE's, but no luck on a start where the car has sat for a couple of hours. Would the prime pulse help this?
-
66fb
Re: Please help weird startup quirk
No, the prime pulse is over with before the car starts cranking. Your issue is keeping it running after it's started. Try adjusting ASE settings. From your description you should check your ASE setting, increase the % and maybe the number of cycles too.