New Fuel Pump, getting pressure, FD still starts for 10 seconds than dies.
#26
Full Member
Thread Starter
The Part came to my Door this Tuesday all the way from Japan while I was still at Work. It said it was delivered, came home, nothing was there. Called DHL and they said they delivered it but couldn’t give me where the exact location was...I started asking my neighbors, they saw the package but Had no idea who took it. Two days later I asked my other neighbor, and she said she thought her dad sent her this part to Fix her Broken Fridge!!! Lol man...Rotary Life
#27
RX-7 Bad Ass
iTrader: (55)
Wow! Yeah, get your fridge fixed up with a TPS!
Dale
Dale
#28
Full Member
Thread Starter
After adjusting the TPS, it idles better but it still cuts off after 17 seconds...You can here a noticeable clicking sound right before it shuts off. It sounds like coming from one of the Relays?
I can also hear the Fuel Pump running even after it stalls.
***This attempt was done with constant 12v going to Fuel Pump***
***Pressure holds at 40 psi while cranking and does not drop when stalling***
My second attempt I have to keep the Gas pedal down for it to stay on longer.
hmmm what could it be?
Maybe its because everytime my engine floods, I pull out the EGI/ Fuel pump Relays out too many time causing the female contacts to stretch out causing them to work Intermittently? I gotta check that out too next week!
I can also hear the Fuel Pump running even after it stalls.
***Pressure holds at 40 psi while cranking and does not drop when stalling***
My second attempt I have to keep the Gas pedal down for it to stay on longer.
hmmm what could it be?
Maybe its because everytime my engine floods, I pull out the EGI/ Fuel pump Relays out too many time causing the female contacts to stretch out causing them to work Intermittently? I gotta check that out too next week!
Last edited by RPOdesign; 07-13-20 at 01:14 PM.
#29
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Thread Starter
Here is my 7th attempt after starting while watching the fuel pressure gauge. It drops 10 psi while cranking, but is stable for a short period before shutting off.
This Time I have to Keep the Gas Pedal down to even start the car.
***This 7th Attempt was tested with Original Fuel Pump Wiring receiving no constant 12v***
I also tried checking ECU codes...CEL light does not come on or flash when I jumpered TEN and GRND
This Time I have to Keep the Gas Pedal down to even start the car.
***This 7th Attempt was tested with Original Fuel Pump Wiring receiving no constant 12v***
I also tried checking ECU codes...CEL light does not come on or flash when I jumpered TEN and GRND
Last edited by RPOdesign; 07-13-20 at 01:14 PM.
#30
Full Member
If im reading that gauge correctly, seems like when it starts youre st about 30 somethin psi dips to 20 and goes back to 30ish. I looked it up and stock pressure is about 40
so it deems like the fuel pump isnt getting up to 40.
so it deems like the fuel pump isnt getting up to 40.
Last edited by rattlehead; 07-13-20 at 01:05 PM.
#31
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In The first video the fuel pressure holds at 40 psi when cranking and does not drop while stalling.
#32
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Thread Starter
Fuel Pressure from First Video
Fuel Pump pressure Zoomed in from first video with F/P Rewire with constant 12V going to directly to Fuel Pump. Seems to be holding pressure at 40 psi when cranking.
Car Idles much better with TPS calibrated.
I also hilighted the area when the Relay Clicks and Car suddenly dies.
Car Idles much better with TPS calibrated.
I also hilighted the area when the Relay Clicks and Car suddenly dies.
Last edited by RPOdesign; 07-13-20 at 02:24 PM.
#34
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#35
Full Member
I usually hear that sound when the key is set to on
and occasionally when i rev and its the air pump going on and off for emission reasons. So thats not a relay indicator for the fuel pump as far as I Know
On my car, which is all stock, I never hear the fuel pump prime or start up before turning the key(maybe im deaf)
Are your fp resistor and ignitor in working condition?
And did you make sure the plug wires are in the correct order? I've made a mistake on those thinking I had it right
and occasionally when i rev and its the air pump going on and off for emission reasons. So thats not a relay indicator for the fuel pump as far as I Know
On my car, which is all stock, I never hear the fuel pump prime or start up before turning the key(maybe im deaf)
Are your fp resistor and ignitor in working condition?
And did you make sure the plug wires are in the correct order? I've made a mistake on those thinking I had it right
Last edited by rattlehead; 07-13-20 at 04:00 PM.
#36
Full Member
Thread Starter
I usually hear that sound when the key is set to on
and occasionally when i rev and its the air pump going on and off for emission reasons. So thats not a relay indicator for the fuel pump as far as I Know
On my car, which is all stock, I never hear the fuel pump prime or start up before turning the key(maybe im deaf)
Are your fp resistor and ignitor in working condition?
And did you make sure the plug wires are in the correct order? I've made a mistake on those thinking I had it right
and occasionally when i rev and its the air pump going on and off for emission reasons. So thats not a relay indicator for the fuel pump as far as I Know
On my car, which is all stock, I never hear the fuel pump prime or start up before turning the key(maybe im deaf)
Are your fp resistor and ignitor in working condition?
And did you make sure the plug wires are in the correct order? I've made a mistake on those thinking I had it right
Maybe Jumping the Resistor caused the Air Pump to Click...also since the Fuel is Okay, maybe theres not much air coming from air pump because I still can’t raise RPM when i hit gas pedal?
Last edited by RPOdesign; 07-13-20 at 04:42 PM.
#38
Full Member
Thread Starter
Maybe its seized since I’m barely getting any throttle response. Fuel, and TPS are okay...New Alternator maybe Air Pump did go bad?
#39
Full Member
Also is the thermowax by the tps good?
it should keep the throttle open a bit for idle during start up and then closes it when car is warm.
since you said the throttle pedal lets it stay on longer
Have you tried the old ecu? Since it ran with that one
it should keep the throttle open a bit for idle during start up and then closes it when car is warm.
since you said the throttle pedal lets it stay on longer
Have you tried the old ecu? Since it ran with that one
#40
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Last edited by RPOdesign; 07-13-20 at 05:55 PM.
#41
Hoo Hoo Hoosiers
My car is having the same issue. Idles for 5-10 seconds, then drops to around 500 RPM and dies. Been going down the same checklist you have, just changed the spark plug wires and spark plugs. Next on the list was the fuel pump and fuel pressure. Where'd you install fuel pressure gauge under the hood?
Last edited by kelldog44; 07-17-20 at 09:15 AM.
#42
Full Member
Thread Starter
My car is having the same issue. Idles for 5-10 seconds, then drops to around 500 RPM and dies. Been going down the same checklist you have, just changed the spark plug wires and spark plugs. Next on the list was the fuel pump and fuel pressure. Where'd you install fuel pressure gauge under the hood?
I installed it in the Fuel Line next to Oil Dipstick! Make sure its not the return line!
Bought a Brass T adapter from Actron.com for $10 Every FD owner should get this!!! 0180-000-1478 Dual Manifold with Schrader Connection
#43
Full Member
Thread Starter
Found the Problem
So I had purchased this Used $100 Air Pump from Ebay, and the Magnetic Clutch doesn’t stay Engaged. Atleast it worked for a Few Months Lol!
#44
Full Member
Thread Starter
Found another Problem.
This 30amp Fuse before the EGI Relay is pretty Chared Up! Maybe this is the reason why I don’t have any acceleration.
13.54 of Resistance btw...haha
AND the wiring is also connected to the Air Pump, which might be why Magnetic Clutch doesn’t stay engaged when Ignition is On.
Last edited by RPOdesign; 07-31-20 at 11:29 PM.
#46
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Thread Starter
Very Low Compression
Here’s the Main Culprit...
I actually can’t wait to pull the motor and do a rebuild...my clutch also needs to be replaced, I got Oil Leaks, so this is a great time to do it!
I actually can’t wait to pull the motor and do a rebuild...my clutch also needs to be replaced, I got Oil Leaks, so this is a great time to do it!
#48
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