Installed new fuel system and AEM EMS...no fuel pressure

[!^3]

Just installed the AEM EMS and a new fuel system including the following:

1.) 30-1300 EMS
2.) AEM 5-bar map sensor
3.) GM IAT
4.) AEM UEGO WB O2
5.) Underhood -6an lines (stock feed and return lines)
6.) Earl's -6an fuel filter
7.) AEM fuel rail
8.) Lucas 720cc injectors
9.) AEM fuel pressure regulator
10.) Summit fuel pressure gauge

As well as a couple other recent additions:

1.) AGP 50 trim turbo kit
2.) MAS-less intake
3.) FAL slimline fans

And supporting mods which can viewed in my profile.

The problem I am having is there is no fuel pressure (the car will not start). When I crank it, the gauge sits at zero. I do not think my fuel pump is activating. Is there anything I should have done when the fuel system was updated? I have a clean pressure feed off of the intake manifold for the FPR. I did not change ANY of the wiring for the fuel pump.

My next plan of action will be to get the pinout off of the EMS for the fuel pump relay and wire up a separate relay in case the EMS is not interfacing correctly with the stock wiring. If this does not work, I will manually wire the pump with a switch and try it again. Any input would be much appreciated. Thanks!

 

[Mirage2LTurbo]

I've seen it on a Supra that it won't start, and won't shut off the fuel pumps even with the key out. I've seen it on a purpose built drag car, owned by one of the lead instrcutors of the east coast EFI101 class that won't turn on fuel pumps without tapping on it.

I've also seen it blow distributors left and right on Honda applications, go read Honda tech about it. I saw a Honda motor spin backwards on startup because the timing hunts around so bad at idle. Literally. Pulled the AEM shitbox off, re-plugged the stock ECU, and it idled, started, and ran perfect as the day it pulled off the showroom floor. I've seen it just forget maps while on. Catch RRE on a good day, they'll tell you about the 6hours of dyno time they lost because they didn't backup their AEM map on the laptop.

Sell your AEM piece and get DSMLink or Autronic.

 

[na90dsm]

what abotu haltech units, how do they hold up.

and do you have a link to the dsmlink setup. i cant find it.


i was under the impresison the aem unit had really good tuning capabilities and was pretty dam good for the money. anyoen else had problems liek this

 

[!^3]

what abotu haltech units, how do they hold up.

and do you have a link to the dsmlink setup. i cant find it.


i was under the impresison the aem unit had really good tuning capabilities and was pretty dam good for the money. anyoen else had problems liek this

I believe with the Haltech's you must wire everything up manually. Not so bad...just really a pain in the butt over a PnP setup. DSMlink is not available for 1g's, right?

I'm going back over my CAL files tomorrow to see how the fuel pump is set up...hopefully it is a simple file change, but we'll see. Rewiring it won't be the end of the world.

Mirage, you crack me up We'll see what happens

 

[Mirage2LTurbo]

I don't have any personal experience with the Haltech's, but I have several rotary friends running them that like them.

Hopefully it's something silly, but I wouldn't be surprised if it wasn't. Good luck with it, and if you think I'm kidding about any of that, get on the internet and start searching around. People assume that just because it's a big name, it's going to be a good product.

 

[phatTSi]

I believe with the Haltech's you must wire everything up manually. Not so bad...just really a pain in the butt over a PnP setup. DSMlink is not available for 1g's, right?

The 1g dsmlink is due out really soon, supposed to be early november.

 

[!^3]

I don't have any personal experience with the Haltech's, but I have several rotary friends running them that like them.

Hopefully it's something silly, but I wouldn't be surprised if it wasn't. Good luck with it, and if you think I'm kidding about any of that, get on the internet and start searching around. People assume that just because it's a big name, it's going to be a good product.

Oh no, I got a really really really great deal on the whole package, but now that I am so far into modding this thing, getting deals is nothing compared to getting a sound, reliable unit. I am at work 'til midnight and using the time to research Autronic Thus far I am not finding a 1g specific unit...do you have to use one of their universal units and wire it in?

Thanks for the info phat!

 

[Mirage2LTurbo]

Oh no, I got a really really really great deal on the whole package, but now that I am so far into modding this thing, getting deals is nothing compared to getting a sound, reliable unit. I am at work 'til midnight and using the time to research Autronic Thus far I am not finding a 1g specific unit...do you have to use one of their universal units and wire it in?

Thanks for the info phat!

Yeah, you have to take out the stock engine harness, lay in the Autronic harness, then cut and solder over the sensor connectors and injector clips.

 

[FireyIce01]

you might also want to check out electromotive's EMS, anybody use this yet? it isn't PnP, but it's supposed to be pretty powerful... if anybody has any feedback on the electromotive unit, I'd like to hear about it as well.

 

[95AWD_TSI_TALON]

That is funny that your fuel pump dosn't come on either. I just got done building my brothers gsr and he has AEM EMS for it to help with his 150 shot. But car would run like a champ on stock ecu. It started and ran TWICE on EMS and now will not kick on the fuel pump either.

 

[!^3]

That is funny that your fuel pump dosn't come on either. I just got done building my brothers gsr and he has AEM EMS for it to help with his 150 shot. But car would run like a champ on stock ecu. It started and ran TWICE on EMS and now will not kick on the fuel pump either.

Did you happen to upgrade to V1.11 from another version? My ECU was loaded with a V1.03 calibration and I was trying to monitor/tune it with a laptop loaded with V1.11 which supposedly will not activate the fuel pump, rev limiters, etc. UNLESS you do th conversion to V1.11 which is easy enough, but takes an extra few minutes to calibrate (you can get the conversion with AEM's latest V1.11 download off of their software forum). After talking to AEM, I am hoping this is my problem, but I guess I will find out tomorrow when I go to crank'er over

 

[Mirage2LTurbo]

There is something internally witht he fuel pump relay that is defective. Like I said above, I've seen AEM's you literally have to tap on to get the fp's to kick on, and others you have to pull the battery terminal to shut the fp's off. Try both.

 

[GRNDSM]

Put a multi meter on the fuel pump “on” signal wire (very easy to do with a rewired fuel pump) and see if it turns on for 3-5 sec after you first put the in the “ON” position. And of course, it should turn on when you are cranking the engine.

Incidentally, I just updated to an extra external fuel pump: Paxton/Aeromotive A-1000, which is being primed by my in-tank Cosmo pump as well as #8 AN lines. And it took me pretty long time of pumping (60+ sec) to see pressure at my FPR. How long have you cranked it for?

 

[!^3]

I cranked for probably 20 seconds tops. Looks like we'll have another go at it today.

 

[splattj]

If you have the stock ECU, swap it back in real quickly and see if the pump primes. Then you'll know if it's a problem with the EMS. Otherwise you might have a problem with your regulator or the installation of the fuel system.

 

[JamiesTSI]

Have someone put there ear by the fuel pump location. Turn the key to on and have them listen for the pump to prime.

Check your programing under "Configure Outputs", make sure every thing is set correctly for your fuel pump to turn on.

You probaly know this already, try not to crank on the starter to long, its hard on it. If you put the fuel system in from scratch it will take a little effort to get fuel through it. Also if you have not done so you may want to get rid of the clutch override switch, it is hard on the throw out bearing if you have to hold the clutch in when cranking.

 

[AMS Eric #2]

Make sure your coolent temp sensor for the ecu is working. When its bad or not plugged in, it reads a default reading of like -14 degrees or something like that. The AEM is configured to turn the fuel pump off under a certain temperature.

Dont listen to Mirage2LTurbo. Hes an Ataritronic nutswinger that has no clue how AEM works or how good or bad it is. All those examples he gave are just here-say he heard thru many people and has no facts on the real causes of the problems. Id be willing to say most could be contributed to user error or improper configuration.

He's gonna get OWNED by my galant the next time I come back down!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

 

[Mirage2LTurbo]

Make sure your coolent temp sensor for the ecu is working. When its bad or not plugged in, it reads a default reading of like -14 degrees or something like that. The AEM is configured to turn the fuel pump off under a certain temperature.

Dont listen to Mirage2LTurbo. Hes an Ataritronic nutswinger that has no clue how AEM works or how good or bad it is. All those examples he gave are just here-say he heard thru many people and has no facts on the real causes of the problems. Id be willing to say most could be contributed to user error or improper configuration.

He's gonna get OWNED by my galant the next time I come back down!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Speaking of heresay, I was the one that actually fixed Ryan's Supra that night at White Castle...

You better put some squeeze on your shitbox or somethin, cuz you ain't hanging on that ####y turbo alone!!!!!!!!!!!!!!!!!!!!!1

 

[AMS97EclipseGSX]

Hahaha, It's another AEM vs. Autronic bash fest. Either can be used to make good power. AEM just has a lot more options and is a lot more complex comparied to autronic. I personally don't like the fact Autronic has no knock control. AEM does. This problem has happened before and it was do to the coolant temp sensor like Eric pointed out above. I wouldn't sell the AEM yet. That is a lot of money you will lose doing that, you just need to find someone or learn how to use the program and you will have no problems.

 

[95AWD_TSI_TALON]

I was trying to set up the AEM EMS in my brothers integra and his fuel pump would not kick on. I found it to be that the new V1.13??? (I think,not the newest version ,not 1.01) The base map from AEM was the problem. IT HAD NO FUEL MAP. When you first download the base setting, go to fuel an look at the map. It should have all kinds of dirrerent crazy numbers plugged in, not all the same. This might be your problem also. I used the turbo gsr settings because it had a fuel map and just turned key to check the pump- and fuel pump primed. no fuel map mean no reason for pump to work.