1992 SE-R With JDM SR20 Swap....Issues...SAVE it From Sale!!

OmegaX1 · 01-24-2008, 10:20 PM

Ok so lets start, I purchased the motor It was a JDM SR20DE mated to a 5 speed automatic, So I Bought a 92 Sentra with a blown Engine, I swapped the 5 Speed Manual Tranny to the JDM SR20 and after spending about a month playing with a bunch of spliced wires we got the car to run. So now the car is running but with a problem....

When you first start the car it is very hard to start, you almost kill the battery trying to get it to turn over after about the 6th try it will turn on and you must leave it running for about a minute otherwise if you give it gas it will die., We have a Fuel gauge right before the fuel rail connected and it reads 40-45 PSI, after the car starts it runs perfect, it feels a little short on power but its there, you can turn it off and leave it off for about 4 hrs and come back and it will start right back up without any problems, we have changed the fuel filter, cleaned the MAF with cleaner, We swapped the FPR out with the one from the old motor and it still is having issues, rigged a direct power to the fuel pump to make sure it was getting power, we have removed the back seats and the fuel pump is on, One thing that i know is if i squirt some fuel into the manifold by a vaccum where the FPR is connected it turns right on and stays on if you give enough and after a while itll stay on by itself...pleas help

Now on to another question when the car would be on the RPMs would usually be very high like in the 1500s so we capped off a vacuum *** ran into the main intake hose and connected to the Intake Manifold by the throttle body pictured below and the rpms are normal is this ok? Could this have something to do with the above problem?

One last thing, What is this for, I am unsure if the plug is even suppose to be connected to that or what vacuums go there

Please Help me, My dad wants to sell the car and get rid of the headache but hes giving me a chance to fix it and let me keep it for free...PLEASE HELP

skcusloa · 01-24-2008, 10:45 PM

So you are running an sr20 with a ga16 ecu?

OmegaX1 · 01-24-2008, 10:47 PM

Quote:

Originally Posted by skcusloa

So you are running an sr20 with a ga16 ecu?

o...i wrote that wrong, no i purchased a 1992 Sentra SE-R with a blown motor to not deal with the GA16 swap, i am running the OEM SE-R ECU for an sr20

oozingmachismo2 · 01-26-2008, 11:09 AM

The two problems I seriously doubt are related. Exactly which wires did you play with? Honestly those symptoms match a weak ignition coil. Did you check the resistance on the primary and secondary circuits? Have you combed the igntion system? Also , which vacuum line are you talking about?It almost loooks like the booster line that you're talking about. When you first start your car it will idle high. Its suppose to. Especially when its cold.

OmegaX1 · 01-26-2008, 01:09 PM

well thats the thing i haven't played with any wires, when the car was purchased the previous owner had sliced a lot of wires for some reason, even though he knew the engine was shot, and now that you mention it when i take out the coilpack or w.e its called out of the first one and touch it to the intake manifold to check for spark it doesnt look that strong, where are the circuits located? and whats combing the system? I know the idle is supposed to be high but it was at about 2,000 and it would be very jumpy

Thanks for the help guys keep it coming

joelgxesentra · 01-26-2008, 01:14 PM

Had the same problem, the only difference is that my car did't take that loooonnngggg to start. But since i installed the FPR works well and the gauge reads 40 psi. But before that i was thinking to upgrade to a MSD ignition coil.

OmegaX1 · 01-26-2008, 01:17 PM

Quote:

Originally Posted by joelgxesentra

Had the same problem, the only difference is that my car did't take that loooonnngggg to start. But since i installed the FPR works well and the gauge reads 40 psi. But before that i was thinking to upgrade to a MSD ignition coil.

but the gauge alreaddy reads 40 psi?

joelgxesentra · 01-26-2008, 02:54 PM

Quote:

Originally Posted by OmegaX1

but the gauge alreaddy reads 40 psi?

Well before i installed the FPR it was at 40 psi now with the FPR installed i lowered the pressure to 36psi i've just been running with the FPR for 2 days. And by now it doesnt show any symptoms. Hope to help you! and be lucky not to sell it. But like oozingmachismo2 siad check te ignition coil because mine looks a little weak and i will be replacing it soon.

billc · 01-27-2008, 08:05 AM

"One last thing, What is this for, I am unsure if the plug is even suppose to be connected to that or what vacuums go there."

I believe that this is a solenoid that plays a role in controllng the EGR system. If you are running EGR, come back and we will tell you how to hook it up. I think it mounts under the throttle body (at least that's where it goes on my B13s).

OmegaX1 · 01-27-2008, 01:02 PM

Quote:

Originally Posted by billc

"One last thing, What is this for, I am unsure if the plug is even suppose to be connected to that or what vacuums go there."

I believe that this is a solenoid that plays a role in controllng the EGR system. If you are running EGR, come back and we will tell you how to hook it up. I think it mounts under the throttle body (at least that's where it goes on my B13s).

Ok ill go look underneath in a bit, its cold...lol, one question y is it that it will start up almost instantly when i put in fuel through the FPR Vacuum Line into the manifold and after u give it a little it will stay on, on its on

billc · 01-28-2008, 08:41 PM

Quote:

Originally Posted by OmegaX1

one question y is it that it will start up almost instantly when i put in fuel through the FPR Vacuum Line into the manifold and after u give it a little it will stay on, on its on

Sorry, I don't have an answer for that one.

OmegaX1 · 02-02-2008, 07:55 PM

Ok i need a vaccum diagram for this thing where could i find one?

billc · 02-03-2008, 07:44 AM

This should help:

http://www.sr20forum.com/sr20ve-sr16...-question.html