Bad Ignition?
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Teching In
Joined: Sep 2005
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Bad Ignition? I have been posting a problem i have been having with my t/a , i thioght it was the op-ti spark , so i bought a code scanner . when i hooked up the scanner it would not come on , so i figured that it was a bad connection. so i wiggled the plug and this little grey box that is located under the kicker panel on the drivers side floorboard started to click and the fuel pump kicked on,everytime i moved the plug. then i tried to start the car and it fired right up , so i shut it off and tryied to scan it and the scanner came on and when it scanned ,it came up FAIL everyime i tried to scan it .i have replaced the coil , icm, and the plugs and wires. the distributor was changed about 6 mnths ago. could the grey box be a relay? and why when i wiggled the diagnostic port with the scanner plugged in the fuel pump came on and the box clicked???? any answers would be much appreciated and thanks in advance.
1st. What is your car. The diagnostic systems that most advance and autozone have are for OBDII systems. OBDII came out in mid 95. If you car is older than that you probably have OBDI. You have a tough problem to figure out there especially if you can't even find codes... If I were to take a WAG, I'd say you have a problem with your fuel pump relay, but don't take my word for it. You could also have a loose connection somewhere on or near that connector that you are temporarily fixing when you wiggle the plug. Check for bare wires or freying. That clicking you heard could have been arcing. I had some wires short out on me in my durango behind the kicker panel that almost started a fire! 
Hope this helps at least a little....
Hope this helps at least a little....
Originally Posted by vulgardisplayofpower
hey , got your post . first the car is a 1995 t/a LT1 ,mm6. 150,00 miles .the clicking is coming from a little grey box it is on the floorboard just left of the clutch pedal. when i plug in the obd2 scanner at port the scanner will not come on,( i tried it on another car and the scanner worked.) when i have it plugged in i can wiggle it and the grey box clicks and the fuel pump comes on they click and come on at the same time. i got the scanner to come on once and it kept reading FAIL . i tried to start the today and it fired right up. let it run for 10 min. i shut the car off. and it started right up ,so i did that several more times . it run fine at idle , half throttle, and full throttle. i went insde to eat dinner came out to try to take for a drive and nothing. i am lost and running out of ideas .thanks for any help....
msd ignition coil , msd distributor, flowmaster super 40.
msd ignition coil , msd distributor, flowmaster super 40.
I'd like to see you back out on the road. You don't see too many 95's out these days...
Originally Posted by vulgardisplayofpower
hey j . i went with a oem , icm. and the reason the scanner wont scan is that since 95 was a transition year the kept the obd1 computer but uses a obd2 plug under the dash. if i figure this out i will let you know. if you have any ideas to use a scanner i would appreciate it....
HOWEVER, there are tricks to read an OBDI without a scanner. If you search around the internet, there are articles on how to do it. I think you need to short a couple pins together and turn the key a couple times or something like that. Then your check engine light flashes at you. The # of flashes translated into some error code.
According to this web page, you can only do it on a '93 f-body, but you could give it a shot...
OBDI Instructions
Here's another guy with the same problem...
OBDI errors on '95 (web forum)
Here's a pretty long article if you have the time and if you are interested...
OBDI & II cabling and interfacing information...
Hope this helps...
Originally Posted by vulgardisplayofpower
hey got your post i found a way to jump it but it did not work. so i went back to the basics . i started with checking fore fire a the #1 plug and nothing , then i checked the coil , no fire out of the coil, then i pulled the wire from the distributor that goes to the coil and nothing... i have spent 3 hours tracing wires for a bad connection or broke wire. do you know if the ignition tumbler is bad will it not let the car start just turn over. when it turns over it seems to spin fast..i sure appreciate your input on this headache that i have.. thanks again.
I'll keep thinking but I'm running out of ideas...
