Ignition module problem?

darkside · 05-05-2008, 09:13 PM

Well, i bumped the timing down a little on my 5.0, and it just died.. no matter where i put it, it runs like complete crap.

My buddy seems to think that the ignition module could be bad or something, which is making the computer compensate or something, which is making the car run like it does..

Heres how it ran- NO power above 2,500 rpm and pops-cracks at 2,500 rpm. and seemed to start over heating when idling.. i know that the timing being too high can cause over heating, but what do u guys think?

militarymustang88gt · 05-05-2008, 09:21 PM

where have you been setting your timing at?

advancing your timing would kill it and so would retarding it. but usually retarding it will make it idle better. you know if you move the module to the left it advances and right retards it. now your over heating problem you need to check your fan clutch if it is still a manual and if not check to see if your electric fan comes on like 5-10 degrees before your thermostat is supposed to open so that by the time your thermostat opens the coolant is already cool.

militarymustang88gt · 05-05-2008, 09:25 PM

oh and not having a good ground for your motor will cause poping and no power also.

EHardy1971 · 05-05-2008, 09:27 PM

Sounds like the distributor might be a tooth off to me,because just bumping the timing usually does'nt cause a TFI module issue!

militarymustang88gt · 05-05-2008, 09:34 PM

Quote:

Originally Posted by EHardy1971

Sounds like the distributor might be a tooth off to me,because just bumping the timing usually does'nt cause a TFI module issue!

he would still be able to rotate it around to get it in tune. it would only just go so far.

EHardy1971 · 05-05-2008, 09:49 PM

Quote:

Originally Posted by militarymustang88gt

he would still be able to rotate it around to get it in tune. it would only just go so far.

That's not always the case though,1 tooth off will make more difference than you realize.Especially with EFI having the PIP/hall effect setup,trust me,BTDT!

darkside · 05-05-2008, 10:23 PM

So where should i start on resolving this?

The timing is supposed to be at 14 advance said my mechanic..

EHardy1971 · 05-05-2008, 10:31 PM

Get it up to #1 TDC,pull the dist cap,the rotor should be pointing close to the 12 o'clock position as you stand in front of the car.

mustangsteve · 05-06-2008, 04:16 AM

First check the GROUND making sure that has good surface contact. Then make sure the distributor is not a tooth off. If you have someone who has a distributor that you know is working try useing it on a test run to check and see if the Distributor you are useing may be BAD. I had bought a New MSD Distributor that was bad rite out of the box and was making my car act just as you describe and when putting the stock one in the car ran great. Also check the Cap making sure there are no cracks in it. If the ignition module is going bad my car was shutting down when it got hot and you would have let the car cool down and it then soemtimes would restart and sometimes it would not start for awhile, and when I bought a new one problem solved ( there is one for sale for like 10.00 I remember it rite in the Thiffty Nickle). Not sure if it is new or not it did no say.

darkside · 05-06-2008, 12:59 PM

What do you mean a " tooth off" ? do i need to pull the distributor out of the car?

Is that like, a tooth on the gear broke off?

05-05-2008, 09:21 PM	#2
militarymustang88gt Senior Member Join Date: Jun 2007 Location: bham and auburn Posts: 337	where have you been setting your timing at? advancing your timing would kill it and so would retarding it. but usually retarding it will make it idle better. you know if you move the module to the left it advances and right retards it. now your over heating problem you need to check your fan clutch if it is still a manual and if not check to see if your electric fan comes on like 5-10 degrees before your thermostat is supposed to open so that by the time your thermostat opens the coolant is already cool. __________________ finally got my avatar. it is the white one. Last edited by militarymustang88gt; 05-05-2008 at 09:24 PM.

05-05-2008, 09:25 PM	#3
militarymustang88gt Senior Member Join Date: Jun 2007 Location: bham and auburn Posts: 337	oh and not having a good ground for your motor will cause poping and no power also. __________________ finally got my avatar. it is the white one.

05-05-2008, 09:27 PM	#4
EHardy1971 Trunk Monkey Join Date: Jun 2007 Location: Home Posts: 5,708	Sounds like the distributor might be a tooth off to me,because just bumping the timing usually does'nt cause a TFI module issue! __________________ Eric 89 LX Coupe-Juiced 01 Lightning-Boost 06 TBSS

05-05-2008, 10:23 PM	#7
darkside marlboro man Join Date: Apr 2008 Posts: 373	So where should i start on resolving this? The timing is supposed to be at 14 advance said my mechanic.. __________________

05-05-2008, 10:31 PM	#8
EHardy1971 Trunk Monkey Join Date: Jun 2007 Location: Home Posts: 5,708	Get it up to #1 TDC,pull the dist cap,the rotor should be pointing close to the 12 o'clock position as you stand in front of the car. __________________ Eric 89 LX Coupe-Juiced 01 Lightning-Boost 06 TBSS

05-05-2008, 09:13 PM	#1
darkside marlboro man Join Date: Apr 2008 Posts: 373	Ignition module problem? Well, i bumped the timing down a little on my 5.0, and it just died.. no matter where i put it, it runs like complete crap. My buddy seems to think that the ignition module could be bad or something, which is making the computer compensate or something, which is making the car run like it does.. Heres how it ran- NO power above 2,500 rpm and pops-cracks at 2,500 rpm. and seemed to start over heating when idling.. i know that the timing being too high can cause over heating, but what do u guys think? __________________

05-06-2008, 04:16 AM	#9
mustangsteve Member Join Date: Dec 2006 Location: McCalla, Alabama Posts: 30	First check the GROUND making sure that has good surface contact. Then make sure the distributor is not a tooth off. If you have someone who has a distributor that you know is working try useing it on a test run to check and see if the Distributor you are useing may be BAD. I had bought a New MSD Distributor that was bad rite out of the box and was making my car act just as you describe and when putting the stock one in the car ran great. Also check the Cap making sure there are no cracks in it. If the ignition module is going bad my car was shutting down when it got hot and you would have let the car cool down and it then soemtimes would restart and sometimes it would not start for awhile, and when I bought a new one problem solved ( there is one for sale for like 10.00 I remember it rite in the Thiffty Nickle). Not sure if it is new or not it did no say.

05-06-2008, 12:59 PM	#10
darkside marlboro man Join Date: Apr 2008 Posts: 373	What do you mean a " tooth off" ? do i need to pull the distributor out of the car? Is that like, a tooth on the gear broke off? __________________