Did I just fry my ECU on my new car?

[Ken448 10+ year member]

if you are testing continuity, connect the red and black together and what displays is what will display on a GOOD fuse

 

[Racerx250 10+ year member]

Buy a new car. That's the easiest way out.

 

[AVSTANG02]

im headin out for the night.. i'll report back in the morning

Where the hell are you going? We got a car to fix!

 

[Ferendon 10+ year member]

Newer cars don't have fusible links, at least not that I've seen in a while.

The headlights came on due to a negative polarity switch.

The "small relay" looking fuses have the terminals on the bottom, inside. If the top of them is clear, the there should be a element in the shape of an S or a circle, right below the clear piece. If you want to test them, pull them out, and probe the contacts in the bottom. I've seen plenty of cases where a battery was hooked up backwards, or a dead short at a fuse, but the fuse didn't visibly pop. Sometimes, at a dead short things can heat up fast enough that something melts down before the element in the fuse goes.

 

[I Like Waffle]

Check the connection from the batt to the fusebox, i had the exact same thing happen on a blazer not too long ago. When you hook a batt up backwards the starter pos wires tend to get really hot. What happened on the blazer is that the pos got super hot and melted off and was just hanging there (the wire that went to the fusebox to supply the cars accs) What you could try is crossing the solenoid to see if the car turns over then, that way you know if the problem is actually the fusebox and not the batt. That batt could be dead as a doornob and youd never know it because it reads 12v. Go get it tested as well, if you had it hooked up for that long you most likely drained the **** out of it.

 

[iamamp3pimp 5,000+ posts]

what reading should I get on ohms?

0.0-0.5 depending on the meter

 

[iamamp3pimp 5,000+ posts]

nothing at all works


I did that... as I said, 2/like 12 fuses light up, but not 1 on the inside of the car lights up.

one that lit up tested the same as 1 that didnt light up both IN and OUT of the car...

I just have a hard time believing that I blew every fuse in the car besides a 5A and 10A fuse, but the 20's 30's + etc etc are all blown.....?? doesnt make sence... Don't you have to test a negative polarity car different (sorry if im using the wrong terminology there)

to myt knowledge they quit making cars w positive ground years ago, and i know for sure that your car isnt one of them.

tow it to a shop. no one here has ever done that before....

 

[snb778 5,000+ posts]

ya know what I just thought about... on my -batt. cable.. it was bolted to GND by a metal piece around the wire... I had to take it off in order to get my batt. cable on the terminal because I needed more slack... I wonder if it was bolted to the car for a reason??

 

[snb778 5,000+ posts]

and the culprit is............. drum roll........................

 

[snb778 5,000+ posts]

i dunno what kinda fuse this is, but its big.. 120A... why does it screw down?

 

[RidnClean 5,000+ posts]

battery

edit: **** //content.invisioncic.com/y282845/emoticons/crap.gif.7f4dd41e3e9b23fbd170a1ee6f65cecc.gif

 

[SicAudio 5,000+ posts]

that is what i was referring to as a cb fuse (circuit breaker style ) it is what replaced the old school fusible links. you should have several of them and 1 is most likely blown that supplies the interior ect... power.

 

[orangecounty1 10+ year member]

to myt knowledge they quit making cars w positive ground years ago, and i know for sure that your car isnt one of them.
tow it to a shop. no one here has ever done that before....

yea its been a LONG time...i know the 67 mini cooper for sale by my house was a + ground, but it was converted, but it also was from England as well.

 

[snb778 5,000+ posts]

FIXED!!

Thanks everyone

i wish it wasnt raining so I could get the rest of the car ready

 

[audioholic 5,000+ posts]

yea its been a LONG time...i know the 67 mini cooper for sale by my house was a + ground, but it was converted, but it also was from England as well.

Alot (all maybe?) of old British cars had a Lucas Electric wiring system in them that had a reversed ground (pos). My dad's old MG was the same way till he converted it. Notoriously crappy system.