Fuel pump mot powering on?
12-31-13, 02:33 PM
#1
Junior Member
Thread Starter
Join Date: Jul 2012
Posts: 14
Likes: 0
Received 0 Likes
on
0 Posts
Fuel pump mot powering on?
Car sat for 7 years, pulled engine, rebuilt it, re-installed it, now fuel pump is not powering on. CEL is on when the key is on and does not shut off? Indication of stored codes? Is there an inertia fuel cut switch on the car? I have yet to put power directly to the pump, but I can't fathom a fuel pump going out from sitting... And does anyone know which is the pwr wire on the plug to the pump???
12-31-13, 05:40 PM
#3
Rotating Performance.
iTrader: (42)
Join Date: Jul 2005
Location: Miami, FL.
Posts: 1,820
Likes: 0
Received 0 Likes
on
0 Posts
The power wire located in the hatch plug colors are red/white. But IMO it's just easy to use a pumper on the Diagnostic connector to power the fuel pump, hope this helps.
Sent from my iPhone using RX7Club
Sent from my iPhone using RX7Club
12-31-13, 09:05 PM
#5
Rotating Performance.
iTrader: (42)
Join Date: Jul 2005
Location: Miami, FL.
Posts: 1,820
Likes: 0
Received 0 Likes
on
0 Posts
I never ask but are we talking about an FD?
If so see picture below. You want to place the jumper wire from F/P to GEN with the ignition on.
Sent from my iPhone using RX7Club
If so see picture below. You want to place the jumper wire from F/P to GEN with the ignition on.
Sent from my iPhone using RX7Club
12-31-13, 11:38 PM
#6
Junior Member
Thread Starter
Join Date: Jul 2012
Posts: 14
Likes: 0
Received 0 Likes
on
0 Posts
Yes it's an FD, I'll try GEN to F/P.
After your initial post, I assumed that F/P was fuel pump, so I jumped the + to F/P but it did nothing. I'll try GEN to F/P and see what happens.
I sprayed starting fluid into the intake and tried to see if I could get it to pop off, and it didn't. I fear I have bigger problems, I need to out a stethoscope on an injector (that will be a trick) to see if injectors are clicking to check for a PCM issue. I pulled codes, and I got 2 TPS codes, but I knew that because I'm running an Accufab 90 mm throttle body with a trick TPS on a custom plenum. And an intake temp code cause I left it unplugged, but nothing vital that would make the car not run (like crank angle sensor). Another weird thing I noticed was a constant humming noise when key was on, I could slightly feel a vibration on the intake and charge pipe with the humming noise, like something was getting power and stuck on.. But again, I need to go to the shop and grab my stethoscope (I own a performance shop In my town, and the car is in the garage at my house) this is so irritating!! I'll grab my stethoscope and my laptop with ALLDATA on it and try tomorrow. I briefly skimmed over ALLDATA's fuel pump procedure at work today, and It said something about a 2 stage fuel pump using different relays for WOT and light Throttle, didn't know that, interesting...
After your initial post, I assumed that F/P was fuel pump, so I jumped the + to F/P but it did nothing. I'll try GEN to F/P and see what happens.
I sprayed starting fluid into the intake and tried to see if I could get it to pop off, and it didn't. I fear I have bigger problems, I need to out a stethoscope on an injector (that will be a trick) to see if injectors are clicking to check for a PCM issue. I pulled codes, and I got 2 TPS codes, but I knew that because I'm running an Accufab 90 mm throttle body with a trick TPS on a custom plenum. And an intake temp code cause I left it unplugged, but nothing vital that would make the car not run (like crank angle sensor). Another weird thing I noticed was a constant humming noise when key was on, I could slightly feel a vibration on the intake and charge pipe with the humming noise, like something was getting power and stuck on.. But again, I need to go to the shop and grab my stethoscope (I own a performance shop In my town, and the car is in the garage at my house) this is so irritating!! I'll grab my stethoscope and my laptop with ALLDATA on it and try tomorrow. I briefly skimmed over ALLDATA's fuel pump procedure at work today, and It said something about a 2 stage fuel pump using different relays for WOT and light Throttle, didn't know that, interesting...
Trending Topics
01-01-14, 01:28 PM
#11
Rotating Performance.
iTrader: (42)
Join Date: Jul 2005
Location: Miami, FL.
Posts: 1,820
Likes: 0
Received 0 Likes
on
0 Posts
Question did you make sure the grounds located on the UIM, engine block (under the coils) & near the kick panel (10mm) just below the ECU are connected?
Sent from my iPhone using RX7Club
Sent from my iPhone using RX7Club
01-01-14, 09:59 PM
#13
Rotating Performance.
iTrader: (42)
Join Date: Jul 2005
Location: Miami, FL.
Posts: 1,820
Likes: 0
Received 0 Likes
on
0 Posts
There you go 7years of sitting will do it! If that's what the pump looks like you should check yours fuel lines & filter. This is just the beginning of things to come. Brakes, lines, slave, master, calipers & so on needs a look at....
Sent from my iPhone using RX7Club
Sent from my iPhone using RX7Club
01-02-14, 01:12 PM
#20
Junior Member
Thread Starter
Join Date: Jul 2012
Posts: 14
Likes: 0
Received 0 Likes
on
0 Posts
And yeah, I'm very thankful the pump didn't turn on. I was in the hospital for going out a windshield years ago during the time the car died, I had a friend put it away in storage, he td me he drained the fuel. apparently not. I didn't know why I didn't check myself.
Thread
Thread Starter
Forum
Replies
Last Post
trickster
2nd Generation Specific (1986-1992)
25
07-01-23 04:40 PM
LunchboxSA22
2nd Generation Specific (1986-1992)
37
10-26-15 10:53 AM