fuhSHO
SHO Member
IF YOU DONT WANT TO READ THIS LONG RAMBLING THERE IS A SUMMARY AT THE BOTTOM.
I agree i used a lot of ignorance in my attempted repair oh , but lets overlook that and try to assess the facts. live and learn thumb
So, the symptom was what i thought to be a dead fuel pump. The car shut off when i was driving one morning, and would not start afterwards. No priming could be heard in the on position. This was a few weeks ago.
On to the ATTEMPTED repair...
I received my 190 lph pump in the mail friday, and had time to tackle it this morning. I dropped the tank and everything, and pulled the ailing pump out. I took the pump to a car battery i had laying around, and tested it. The pump ran. SO, i go back to the car, hook it up to the harness and put the key in the on position...and nothing. I do continuity, resistance and voltage tests on the harness and pump. There is continuity, but also an OK resistance, meaning to me that it isnt grounding or shorting somewhere.
I decide that maybe the pump and wiring are actually ok, and its the relay ive gotta deal with. I pull the relay out, and replace it with my dads from his identical '90 SHO. No go. THEN, i go to the '91 SHO in the driveway and get that relay. (**KEY** - my car is a 90, and it is a 91 w/ EGR - im not sure if that is significant but im throwing every detail out.) I look at the part #'s and they are similar with the 90 being E9DF-12B577-AB and the 91 being E9DF-12B577-AA, the both only differing in the last letter.
I put the 91 in, and i get priming. I figure hey, it must work...i will learn from this careless assumption later...
With the tank bolted up with the old pump, the relay in, and the new fuel filter in, i start her up after priming a few times. She starts up great, except the battery light is on. I shrug it off as the battery being a little low because it had been cranking a lot in the past week without starting. I take a test drive, and she works great. The battery light is still on.
I figure im on a roll, ill fix that noisy PS pump too. I get in and drive to napa to get some fluid. The battery light is still on, and i say to myself ill charge the battery when i get home. About 5 min away from my house and a few blocks from napa, i am sitting at a stoplight. Lights begin to flash on my dash, the airbag light is flashing, the wipers are goin really slow, and my stereo is cutting out intermitantly. Thank god the subs were not in the car or this would have happened a lot sooner. The car is still idling but i go to drive and it wont rev. She dies at the light, and when i try to start it i get the "clicks"
So the battery is dead... and obviously the alternater wasnt working. A police man insists that i get off the busy street and he pushes me to a side street and my friend and I are left to figure out what the **** is wrong. My brother comes, with a new battery. We dont have tools to swap the batteries at this time so we just jump it and it seems to be running ok. I take off and get about 2 blocks away when it dies on a hill. Luckily there are no cars in this area and i have a little time to investigate. We try to jump it with the battery again but that is hopeless. Slow cranks, followed by the clicks again. I coast backwards down the hill and around a turn because i was in an unsafe place, and i successfully pop started the car. i get about 100 feet (in reverse) and it dies. I call my brother again, and we jump it once more with his car and leave them connected for about 5 minutes. i get about 3 blocks and park it in a safe place. I hop in his car and drive home to get some tools and parts.
My friend and i return to the site in my moms car, with a fresh battery, the relay from my dad's 90, and tools. Immediately some Native American guy comes out and says in some sketchy english something to the effect of " Move your car, its creepy." I reply with, "Sorry, it wont run", but in my head i think, " DO YOU WANNA FIX IT FOR ME??? OBVIOUSLY THIS CAR ISNT GOIN ANYWHERE." He then stares from his yard for about 10 minutes, and then goes inside and watches the rest from a chair in front of his window...WEIRD. Anyways, we swap the battery and relay (swap to my dads from his '90) and the car fires, but will not idle. HMMM INTERESTING, as in my driveway, the pump would not prime with the relay from my dads car, but now it primes but will nt run the car? WTF?? It still wont run properly, so we leave the fresh battery in and go back to the 91 relay. She fires and purrs. I peal the heck out of there as i feel i probably have the same amount of time as i had the before it died the first time. I get it home and in the driveway safely, with no signs of wanting to die but the battery light is still on. I let it run in my driveway, and rev it a bit. The car sounds funny, but in a good way. Its loud. It seems that the secondaries are open. By this time i say f*ck it, i got a date tonight. I take my dads battery out, put it back in his car, along with the relay i borrowed. WHAT DO YA KNOW. The relay works great in his car... (i drove it all night too, no problems) I am now, pretty boggled.
SUMMARY: SO, in short, i never replaced the pump, but struggled with relays instead. I replaced my E9DF-12B77-AB from my 90 (no EGR)with a E9DF-12B77-AA relay from a 91 w/ EGR. The -AA('91) relay worked and ran the car (seemed the secondaries were on though...)and the -AB('90) relay did not. Both AB's (from mine and my dads car) both worked in my dads car but not mine(an identical car to his). In addition, i seem to have smoked my alternater in this process, perhaps from using the -AA relay.
QUESTIONS
Should these 2 different relays act the same, or are they indeed different? shrug
Could the different relay have toasted my alternater or was that coincidental? shrug
Should i change the pump, even though it seems to be working correctly...? (this is what i plan on doing, i mean i have it...i should just try it.) shrug
im an idiot and i never ran codes...ill be doing that later this tomorrow morning(sunday).
PS - HAppy birthday to me, im 17! today (15th)
I agree i used a lot of ignorance in my attempted repair oh , but lets overlook that and try to assess the facts. live and learn thumb
So, the symptom was what i thought to be a dead fuel pump. The car shut off when i was driving one morning, and would not start afterwards. No priming could be heard in the on position. This was a few weeks ago.
On to the ATTEMPTED repair...
I received my 190 lph pump in the mail friday, and had time to tackle it this morning. I dropped the tank and everything, and pulled the ailing pump out. I took the pump to a car battery i had laying around, and tested it. The pump ran. SO, i go back to the car, hook it up to the harness and put the key in the on position...and nothing. I do continuity, resistance and voltage tests on the harness and pump. There is continuity, but also an OK resistance, meaning to me that it isnt grounding or shorting somewhere.
I decide that maybe the pump and wiring are actually ok, and its the relay ive gotta deal with. I pull the relay out, and replace it with my dads from his identical '90 SHO. No go. THEN, i go to the '91 SHO in the driveway and get that relay. (**KEY** - my car is a 90, and it is a 91 w/ EGR - im not sure if that is significant but im throwing every detail out.) I look at the part #'s and they are similar with the 90 being E9DF-12B577-AB and the 91 being E9DF-12B577-AA, the both only differing in the last letter.
I put the 91 in, and i get priming. I figure hey, it must work...i will learn from this careless assumption later...
With the tank bolted up with the old pump, the relay in, and the new fuel filter in, i start her up after priming a few times. She starts up great, except the battery light is on. I shrug it off as the battery being a little low because it had been cranking a lot in the past week without starting. I take a test drive, and she works great. The battery light is still on.
I figure im on a roll, ill fix that noisy PS pump too. I get in and drive to napa to get some fluid. The battery light is still on, and i say to myself ill charge the battery when i get home. About 5 min away from my house and a few blocks from napa, i am sitting at a stoplight. Lights begin to flash on my dash, the airbag light is flashing, the wipers are goin really slow, and my stereo is cutting out intermitantly. Thank god the subs were not in the car or this would have happened a lot sooner. The car is still idling but i go to drive and it wont rev. She dies at the light, and when i try to start it i get the "clicks"
So the battery is dead... and obviously the alternater wasnt working. A police man insists that i get off the busy street and he pushes me to a side street and my friend and I are left to figure out what the **** is wrong. My brother comes, with a new battery. We dont have tools to swap the batteries at this time so we just jump it and it seems to be running ok. I take off and get about 2 blocks away when it dies on a hill. Luckily there are no cars in this area and i have a little time to investigate. We try to jump it with the battery again but that is hopeless. Slow cranks, followed by the clicks again. I coast backwards down the hill and around a turn because i was in an unsafe place, and i successfully pop started the car. i get about 100 feet (in reverse) and it dies. I call my brother again, and we jump it once more with his car and leave them connected for about 5 minutes. i get about 3 blocks and park it in a safe place. I hop in his car and drive home to get some tools and parts.
My friend and i return to the site in my moms car, with a fresh battery, the relay from my dad's 90, and tools. Immediately some Native American guy comes out and says in some sketchy english something to the effect of " Move your car, its creepy." I reply with, "Sorry, it wont run", but in my head i think, " DO YOU WANNA FIX IT FOR ME??? OBVIOUSLY THIS CAR ISNT GOIN ANYWHERE." He then stares from his yard for about 10 minutes, and then goes inside and watches the rest from a chair in front of his window...WEIRD. Anyways, we swap the battery and relay (swap to my dads from his '90) and the car fires, but will not idle. HMMM INTERESTING, as in my driveway, the pump would not prime with the relay from my dads car, but now it primes but will nt run the car? WTF?? It still wont run properly, so we leave the fresh battery in and go back to the 91 relay. She fires and purrs. I peal the heck out of there as i feel i probably have the same amount of time as i had the before it died the first time. I get it home and in the driveway safely, with no signs of wanting to die but the battery light is still on. I let it run in my driveway, and rev it a bit. The car sounds funny, but in a good way. Its loud. It seems that the secondaries are open. By this time i say f*ck it, i got a date tonight. I take my dads battery out, put it back in his car, along with the relay i borrowed. WHAT DO YA KNOW. The relay works great in his car... (i drove it all night too, no problems) I am now, pretty boggled.
SUMMARY: SO, in short, i never replaced the pump, but struggled with relays instead. I replaced my E9DF-12B77-AB from my 90 (no EGR)with a E9DF-12B77-AA relay from a 91 w/ EGR. The -AA('91) relay worked and ran the car (seemed the secondaries were on though...)and the -AB('90) relay did not. Both AB's (from mine and my dads car) both worked in my dads car but not mine(an identical car to his). In addition, i seem to have smoked my alternater in this process, perhaps from using the -AA relay.
QUESTIONS
Should these 2 different relays act the same, or are they indeed different? shrug
Could the different relay have toasted my alternater or was that coincidental? shrug
Should i change the pump, even though it seems to be working correctly...? (this is what i plan on doing, i mean i have it...i should just try it.) shrug
im an idiot and i never ran codes...ill be doing that later this tomorrow morning(sunday).
PS - HAppy birthday to me, im 17! today (15th)
