Welcome to the all new Geo Metro Forum. We hope you enjoy your visit.You're currently viewing our forum as a guest. This means you are limited to certain areas of the board and there are features you can't use and images you can't see. Registration is simple, fast, and completely free. If you're already a member please log in to your account to access all of our features: Join our community! |
| ignition coil help!!!!!!!! | |
|---|---|
| Tweet Topic Started: Mar 23 2015, 11:12 PM (2,423 Views) | |
| Hanuman | Mar 31 2015, 08:32 PM Post #31 |
|
"The Almighty Grounds Cleaner"
![]()
|
two 20+ year old geo's both having the same part fail with in 2 weeks is nothing to worry about. the parts lasting this long in the first place speaks highly of them. worn distributors with bad bearings that "wobble" around can strike a cmp sensor damaging it. hitting the distributor with a hammer to break it loose can knock the cmp out of alignment causing it to be damaged. the screws could become loose allowing it to move...... it could fail simply from age. it could have been adjusted out of spec. so many variables....... |
![]() |
|
| Hanuman | Mar 31 2015, 08:42 PM Post #32 |
|
"The Almighty Grounds Cleaner"
![]()
|
if your getting a code for crank position sensor: check the wiring. check that your oil pan seal isnt to big. if the engine starts its not the cam or crank sensors.......they stop operation. poor running is a seperate problem. cap, rotor. plugs and wires. check fuel injector spray pattern.....should be a nice even cone. check your egr.....a little leak will cause somedrive ability problems! check the evap system. describe exactly how the engine runs...cold and warm. |
![]() |
|
| faygoninja | Apr 1 2015, 12:08 AM Post #33 |
![]()
|
cold is very tough to start. seems easier with pedal assist or starting fluid. hot is not quite the same as it used to be but much closer than it is cold. cold takes 2-5 min of attempts and cranking. hot takes about 30sec or less. once it is running its purring like a kitten. better than ever before. more power than i thought i had. and very quiet, i have to keep the window rolled down to make sure it didnt stall out. im thinking "weak spark" but im running out of options |
![]() |
|
| Hanuman | Apr 1 2015, 02:01 AM Post #34 |
|
"The Almighty Grounds Cleaner"
![]()
|
check your ignition timing. .....................your just replaced the cmp. good chance its off. check your spark plug gap. check your cap and rotor. test your fuel psi. how is your cranking speed?...is it slow? double check your cmp is set correctly....use the feeler guage. directions are in a earlier post in your thread i believe......if not pm me. is the distributor ground connection clean on all 3 ends? distributor, middle connector, coil. is the cmp harness clean and undamaged? crank sensor harness clean and undamaged? pull the tail light fuse to cut power to the ecm. go have a cup off coffee. reconnect. this will resetyour codes and learning cycle. you may have a problem that you have fixed that your ecm is still trying to compensate for. run through this list for starters.....pm me if needed. |
![]() |
|
| faygoninja | Apr 2 2015, 11:20 AM Post #35 |
![]()
|
ok ill get on this tomorrow. i have the day off. your very helpful and i appreciate it |
![]() |
|
| faygoninja | Apr 5 2015, 11:14 AM Post #36 |
![]()
|
well its seems to be working now. sadly all the parts after the pickup coil were probably not needed. i went out and "adjusted" the coil, and it fires right up. there really isnt much of an adjustment to it but it made the difference. on the plus side, it runs like a champ now. thanx for the info on the p/u coil gap. though i didnt have a feeler gauge, i just pushed it very close to the dist. and it worked. |
![]() |
|
| Hanuman | Apr 5 2015, 02:45 PM Post #37 |
|
"The Almighty Grounds Cleaner"
![]()
|
|
![]() |
|
| t3ragtop | Apr 5 2015, 06:33 PM Post #38 |
|
Turbo3 and Twincam Tweaker
![]()
|
back in the day i used to use a paper matchbook cover as a feeler gauge to set points. it works really well for the distributor mounted ignitor module, too. as a matter of fact, some gm products have a gear tooth reader that reads the starter teeth on the flywheel. the tips of the sensors have a thin piece of compressed paper on their faces. you drop them into the hole, the paper sets the air gap, and you tighten the sensor down. when the ring gear starts to turn the teeth scrape the paper off and the air gap is dead nuts on. |
![]() |
|
| faygoninja | Apr 5 2015, 06:41 PM Post #39 |
![]()
|
where were you three days to a week ago T3ragtop? hahha. next time..... |
![]() |
|
| t3ragtop | Apr 5 2015, 06:43 PM Post #40 |
|
Turbo3 and Twincam Tweaker
![]()
|
a day late and a dollar short!
|
![]() |
|
| 1 user reading this topic (1 Guest and 0 Anonymous) | |
| « Previous Topic · Electrical Systems · Next Topic » |


Welcome to the all new Geo Metro Forum. We hope you enjoy your visit.






7:53 PM Jul 10