One day it will run, one day it won't...
08-18-2003, 12:59 PM
#1
0.5 BAR
Thread Starter
Join Date: Jun 2003
Posts: 159
One day it will run, one day it won't...
That's my latest problem, last week I went down to the shop to work on the rex and it wouldn't start to save my life. It was getting spark, so I checked the fuel line, nuthin. Not even when I turned the key on. So, I figures fuel pump. But today I go down, and poof it started right up no problem. I've been having this problem intermittently forever. First I switched the ign. trigger and internal coil from a spare dist, and that worked. I've got a jacobs on it, but that shouldn't affect ----. I don't know what to do except shoot it with a shot gun. But, I shut off the car for a minute and then it didn't want to start for me again. 
I think maybe it's just teaseing me.
I think maybe it's just teaseing me.
08-18-2003, 04:32 PM
#6
1.5 BAR
Join Date: Feb 2003
Posts: 828
Re:One day it will run, one day it won't...
I had that problem on a BMW once(I know totaly different) turns out it was a bad pick up in the distributor. The fuel pump relay got turned on buy the disributor pulse, the pick up would work on and off, it drove me nuts. You may have a similar problem, get a wiring diagram and see what turns the fuel pump relay on.
08-18-2003, 11:26 PM
#8
0.5 BAR
Thread Starter
Join Date: Jun 2003
Posts: 159
Re:One day it will run, one day it won't...
i was gonna replace the pump anyway so, I'll start there and work my way forward. It just pisses me off. It's so sporadic that I can never pin point it. It runs, I shut it off, come back 5 minute later and it won't start. Then it does. The car ain't at my house, so I can't spend all day turnin the key over and over. The battery I yanked from a car in back of the garage, so I know thats crap.
08-19-2003, 07:00 AM
#9
3.0 BAR
Join Date: Feb 2003
Posts: 9,089
Re:One day it will run, one day it won't...
main relay sends signals depending what point the car is in..
7 connections to the relay...
starter signal
ground
batt +12v
ecu a13,a15
fuel pump
ignition switch
ecu a12,a14
it sends signals to different connections depending on key position. ...if u want u can give me your email (PM it to me) and I can email you a main relay test and replace writeup some1 did.
7 connections to the relay...
starter signal
ground
batt +12v
ecu a13,a15
fuel pump
ignition switch
ecu a12,a14
it sends signals to different connections depending on key position. ...if u want u can give me your email (PM it to me) and I can email you a main relay test and replace writeup some1 did.
08-19-2003, 10:16 AM
#10
3.0 BAR
Join Date: Dec 2002
Posts: 3,703
Re:One day it will run, one day it won't...
I had the same problem check the main relay.
This is how I fixed it, It's been 2 months and haven't have a problem since.
http://www.markl.f9.co.uk/howto/elec...main-relay.htm
This is how I fixed it, It's been 2 months and haven't have a problem since.
http://www.markl.f9.co.uk/howto/elec...main-relay.htm
