trouble starting the car

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s2je77
MegaSquirt Newbie
Posts: 4
Joined: Mon Jul 18, 2005 6:56 am
Location: Toronto, Canada

trouble starting the car

Post by s2je77 »

hi

thanx to the help of other members of this forum, my car is almost drivable...
the biggest obstacle stopping my car being a daily driver now... is it doesn't wnana start after sitting for a few hrs...

i battery is not draining.... when i get in the car, it's holding a steady 12 volts... and i would be cranking the car ( stopping every few seconds) until the battery dies.... then i'll have to boast it with another car.... and the car will start on the first crank when it's connected to another car...

i've tried putting a new battery in... but it's the same....
i've also tried playing with different settings in MT (afterstart, crank, warmup) and none of those helped...

can anyone please help me?

thanx in advance
jeff
92 VW GTi 9A, 36# injectors
PCB3 MSnSe-024s12 (fuel only), MT 2.25b748
almost drivable!
hudsonhawk
MegaSquirt Newbie
Posts: 11
Joined: Sun May 02, 2004 5:43 pm
Location: Dallas, TX
Contact:

Post by hudsonhawk »

When you are cranking what is your battery voltage?

You may have a problem with the alternator not charging or you may have an issue with a parasitic drain that is effecting the battery.

If your voltage drops too low when cranking then the MS will not work.
'72 CJ-5 w/'83 AMC 258 running a late 80's GM TBI controlled by MegaSquirt.
s2je77
MegaSquirt Newbie
Posts: 4
Joined: Mon Jul 18, 2005 6:56 am
Location: Toronto, Canada

Post by s2je77 »

the battery voltage hovers around 10 to 12 volts for the first 15-20 seconds.... then the voltage low enough where the MS relay starts ticking... and that's when i know i need to get help from another car....

the battery is draining @ 20mA... and from what i've learned... n e thing under 40mA is fine....
the battery is charging... cuz after a drive around the block, the car can turn off and start on the first crank..!! and it will start within a few hrs ....

i suspect it's something wrong with my coldstart/coldcrank settings... cuz i live in toronto... and it get's REALLY cold @ nite....

thanks for your help...
jeff
92 VW GTi 9A, 36# injectors
PCB3 MSnSe-024s12 (fuel only), MT 2.25b748
almost drivable!
s2je77
MegaSquirt Newbie
Posts: 4
Joined: Mon Jul 18, 2005 6:56 am
Location: Toronto, Canada

Post by s2je77 »

hi

i still have trouble starting the car every morning...
can n e one give me hints as to where to start looking for the problem?
thank you

jeff
92 VW GTi 9A, 36# injectors
PCB3 MSnSe-024s12 (fuel only), MT 2.25b748
almost drivable!
evolotion
MegaSquirt Newbie
Posts: 4
Joined: Mon May 02, 2005 6:08 pm
Location: glasgow, scotland

Post by evolotion »

check the voltage at the megasqurt , make sure your not getting any unwanted volt drops due to a bad connectio or earth strap, and keep playing with the warmup bins..youll get there eventually.
14.5@97 in a fully loaded daily driven classic mini :)
s2je77
MegaSquirt Newbie
Posts: 4
Joined: Mon Jul 18, 2005 6:56 am
Location: Toronto, Canada

Post by s2je77 »

is it possible to have enough voltage to turn the starter... but not enough voltage to engage the gear?
92 VW GTi 9A, 36# injectors
PCB3 MSnSe-024s12 (fuel only), MT 2.25b748
almost drivable!
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