fuel pump electrical prob
#1
i'm disrespectful to dirt
Thread Starter
fuel pump electrical prob
i've searched and still searching but haven't found an answer yet so hopefully someone can help me out. anyway car ran fine but the other day it wouldn't start. i'm not getting any fuel pressure from the pump when i turn the key but it does primer when i jumper. there's a click but that's about it. any help is appreciated.
#2
Lives on the Forum
Sounds like you may have a bad circuit opening relay. Inside the relay are two seperate coils, one energized when the key is turned to start, the other when the AFM door is opened (during & after start). If the former was bad, you'd get no pump trying to start, yet get it when the check connector is jumpered (simulating the AFM door switch being met).
The relay is down under the steering column, yellow in color when viewed from below (S4 cars)...
The relay is down under the steering column, yellow in color when viewed from below (S4 cars)...
#3
i'm disrespectful to dirt
Thread Starter
i think i did something stupid. i was looking around with a test light... i thought it might be the clutch switch and i got a spark from one of the green wires. my volt meter was all the way down which i thought was odd so i got my battery charger to check it out. my battery was good and my car actually started but now my gauge cluster is dead. all fuses are fine what did i fry?
#4
HAILERS
Join Date: May 2001
Location: FORT WORTH, TEXAS,USA
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METER FUSE In the interior fuse box.
An engine will start with the wire to the coil for the START circuit is removed from the circuit opening relay. I run one car like this delibertly like that. It is the switch in the afm that will overcome this disability. When the engine rotates it WILL pull the flap aft and make the switch.
I don't recommend disabling this coil in the circuit opening relay, I just did it to show that there will normally be no starting problem with it disabled.
An engine will start with the wire to the coil for the START circuit is removed from the circuit opening relay. I run one car like this delibertly like that. It is the switch in the afm that will overcome this disability. When the engine rotates it WILL pull the flap aft and make the switch.
I don't recommend disabling this coil in the circuit opening relay, I just did it to show that there will normally be no starting problem with it disabled.
#5
i'm disrespectful to dirt
Thread Starter
thanks guys and you're right it was the meter fuse... swear i thought i checked it.
all's fine and good now but my starting problem seems to only happen when it's cold outside. now that it's warm out she starts every time. anything i should look into changing?
all's fine and good now but my starting problem seems to only happen when it's cold outside. now that it's warm out she starts every time. anything i should look into changing?
#6
Lives on the Forum
Originally Posted by HAILERS
An engine will start with the wire to the coil for the START circuit is removed from the circuit opening relay.
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