Electrical Problem?
 

My 95 eclipse rs died on me this morning, I've always had a check engine light on my car
since I bought it a few years ago, we got it all checked out and came with a code that had
to do with the secondary air management. We could never figure it out so we left it alone.
When I drive my car the check engine light will randomly go off at times, and come back on.
When this happens the car will sometimes jerk forward and back, and then drive fine. Usualy
when I first get it running in the mornings will it do that a couple of times. So I was
leaving for work this morning and it felt like my car was about to jerk, but instead the
speedometer and rpm gauge all droped down to zero instantly, and the gas pedal was doing
nothing. So I came to a stop but the car still ran a good 5-10 seconds after my gauges went
to zero. When it cut off, I tried multiple times to start it back up, but it would only
turn over. Later today I checked all the wirings I could see, I took out the ECU and
clipped it back in - only the bolt in the middle that screws it on tight broke in half, but
I clipped the plastic cap back over the ECU, cleaned off the battery, and checked the timing
belt. I sprayed some starting fluid to help crank it up, it almost started twice but would
clonk out before it could catch. There's enough oil, plenty of gas, checked all the spark
plugs and wire, everything looks fine. I was told I might need a coil pack, or I might need
a new electronic module to get it running again. If you have any ideas or suggestions on
what it could be or things to check and try out, please throw them at me because I'm open
for anything.

RE: Electrical Problem?
 

ANYONE?!?!

RE: Electrical Problem?
 

That's a problem I'd have to be there to troubleshoot. Otherwise I don't know WHAT direction to go with it.

RE: Electrical Problem?
 

Well I decided to start at the fuel pump... I pulled out the fuel pump and it appears to be okay, I was told to hook it back up but leave the "out" flow for fuel unplugged and check if any fuel is being pushed in, and then blown out. Only question is... which connection on the top of the fuel pump is the fuel out. The small tip that hooks up to the rubber hose, or the larger one you screw to the other side. A better way to describe what I'm saying is the picture in this link. Is the end with the nut to tighten the fuel out or fuel in?

http://images.1aauto.com/FPU/1AFPU01024.jpg

RE: Electrical Problem?
 

K first there are 2 ways to know which is the fuel in and out BUT there IS an easier way to test fuel pressure. There is a fitting on your fuel rail that you can hook a guage up to that will tell you if you have pressure there. You might want to start THERE first befor leaving things disconnected ;)

RE: Electrical Problem?
 

All in all my fuel pump is not working, so I'm looking for the relay or fuse for it. But I can't seem to find it... anyone know where it is on a 95 eclipse RS. There are 2 relays next to each other on the top corner of the car with no diagram for it, with wires coming out of them. also I have 2 close to my clutch pedal above that fuse box with no wires.

RE: Electrical Problem?
 

If I'm not mistaken I believe the fuel pump relay is actually under the hood. But I couldn't tell you for sure.

RE: Electrical Problem?
 

Come to find out I had a rotten fuel line hose for my fuel pump, that crumbled somewhere along the process of putting my fuel pump back in my tank. I got all that replaced, hooked everything back up and still I get nothing. I messed around with the relays some more but they all seem fine. I do not believe I'm getting any fuel into my engine still, but how do I test it without having to **** with the fuel pump itself? Also, could my fuel filter be causing something to go wrong? The last thing I can think of that would deal with my fuel would be my fuel rail and fuel injectors, or maybe even my ECU could cause fuel problems? If any of that would cause me problems please let me know, and anything else fuel related that I can check.

RE: Electrical Problem?
 

Allright first off when was the last time you replaced the fuel filter? Do that cuz it can't hurt. I don't remember if there is a secondary I believe the fuel filter though is attached to the pump in the tank and is meant to be replaced WITH the pump. If there IS a secondary I recommend replacing it. Also you'll need a pressure gage to test the fuel pressure at the engine. There should be a connection on your fuel rail (Looks like a tire valve stem connection). Attach the gage to it and have someone crank over the engine. If you get no pressure then the pump is likely bad.

RE: Electrical Problem?
 

On my 95 eclipse what other year eclipse or car uses the same fuel pump as mine? Because I plan on just going to a junk yard and picking one up, along with replacing the fuel filter with it, also how do you check if your car is getting any spark?

RE: Electrical Problem?
 

Junk yard parts arent always the best way to go. Who knows if the thing even works? And unless you know the junkyard personaly they might not take it back. Personaly something like this id buy brand new just so i know i wont have to worry about it for a long time. You get what you pay for. For the spark the old fashioned way is to take the spark plug out connect the wire back to it and lay it on something steel like the exaust manifold have a friend turn the car over and look for spark. It helps if the area is dark.

RE: Electrical Problem?
 

From what I understand about the wiring of a car - it's like a big circle and if one wire, sensor, or something is unpluged, shorted, or broken then whatever that certain part is that should give power to the next part will end up breaking the circle, so everything after that broken part will not work or catch fire. I just got a test light for fire and spark, everything I tested I made sure the key was in the "on" position and some I even tried while turning over the car, first thing I tested was the fuel pump wiring and I get no fire. I move along and see if there is any spark on the coil pack... nothing. So I check the wire that clips onto the coil pack and what I think leads to the ECU, and there is no power going to it either. I check some wires that clip onto other things, some get fire some do not. The fuses are all okay as well, and I'm pretty sure all the relays are doing good also, I know the 2 under the hood are, and the 2 next to the foot pedals should be okay because I took some out of a junkyard a couple of days ago to try them out and nothing changed. I jumped to the ECU connector and some of the port holes in it light up but others do not, I don't know what the wires lead to exactly from the ECU connector that are or aren't working. I'm guessing it's not the fuel pump or ECU but some wire or sensor getting ****ed up that is causing all this mess and not letting my car catch that spark. Any suggestions on what to do from here, what certain wire I should check next, anything, just let me know PLEASE! My thought is to replace the wire that leads to the coil pack, because the other parts I checked, such as cetain wires or the ECU port holes that didn't work probably won't fire up unless I have the car running.

RE: Electrical Problem?
 

Allright first off your theory there is wrong. Now if the key is only in the ON position unless the engine is running the ECU will turn the fuel pump OFF after 2 seconds. The 2 seconds that it is on is for priming the fuel system. As for it being like 1 big circle no that's not true.

RE: Electrical Problem?
 

Alright then I'm wrong, but it's still something electrical. When I put the light test in one certain pin hole on the ECU connector it turns the fuel pump on and you can hear the hose flowing with fuel along with the slight buzzing of the fuel pump in the back until I remove the test it goes off, so I know that's solved. But I don't know why I don't hear it when I turn the key to "on" when the ECU is connected? Nor did the fuel pump wires have power when I put the light on them for some reason though... even though the fuel pump did turn on. Also on the ECU connector only the right side from the center bolt between the pin holes does it have about 5-10 random pin holes that produce power, the whole left side from the center bolt has no pin holes with power surging threw them, along with a many random holes on the right side with no power. So could someone be so kind to put a test light on there 95 eclipse RS ECU CONNECTOR and see which pin holes produce power if not all of them? It would help me narrow things down. Could it be my ECU itself that is just not powering anything when I hook the connector up? Because I tested these sensors with the key to on.

- cam sensor - no power
- map sensor - no power
-TP sensor - no power
ECT sensor - no power
Electric EGR transudcer solenoid - power
o2 sensor - no power

RE: Electrical Problem?
 

posibility of the ECU capacitor leak problem maybe?

RE: Electrical Problem?
 

Alright I'm wrong about that circle thing, but it's still something electrical. When I put the light test in one certain pin hole on the ECU connector it turns the fuel pump on and you can hear the hose flowing with fuel along with the slight buzzing of the fuel pump in the back until I remove the test it goes off, so I know that's solved. But I don't know why I don't hear it when I turn the key to "on" when the ECU is connected? Nor did the fuel pump wires have power when I put the light on them for some reason though... even though the fuel pump did turn on. Also on the ECU connector only the right side from the center bolt between the pin holes does it have about 5-10 random pin holes that produce power, the whole left side from the center bolt has no pin holes with power surging threw them, along with a many random holes on the right side with no power. So could someone be so kind to put a test light on there 95 eclipse RS ECU CONNECTOR and see which pin holes produce power if not all of them? It would help me narrow things down. Could it be my ECU itself that is just not powering anything when I hook the connector up? Because I tested these sensors with the key to on.

- cam sensor - no power
- map sensor - no power
-TP sensor - no power
ECT sensor - no power
Electric EGR transudcer solenoid - power
o2 sensor - no power

What's the ECU capacitor leak problem?

RE: Electrical Problem?
 

Dude I already am takin a shot in the dark saying maybe it's the known capacitor leak problem KNOWN to plague Eclipses? Have the capacitors inthe ECU been replaced?

RE: Electrical Problem?
 

No, the capacitors have not been replaced, should I go for a new ECU and see if that solves my problems?

RE: Electrical Problem?
 

On a side note- There's a recall that involves removing the entire secondary pulse air system, replacing the fuel pressure regulator, and reprogramming the PCM. Some PCM's cannot be reprogrammed in which case they are replaced. Should you be so lucky, you might be in store for a brand new PCM??
As far as the capicitors leaking, this plagued the 1G Eclipse and some 2G MITSUBISHI powered Eclipses. You're RS is a Chrysler powered vehicle and though i've seen the PCM go bad on a number of them- it does NOT involve a capacitor type repair. I've seen a few Fuel Pump relays and ASD relays go bad (located near the brake fluid resevoir).

Joel, CA

RE: Electrical Problem?
 

That's why I was putting the ? when I asked if it could be the capacitor leak. I knew it plagued the 4G63 model didn't know if it got the chrysler model engine at all. Though I DIDN'T know about the recalls for reprogramming so definately something to check out there.

RE: Electrical Problem?
 

I took a new coil pack and replaced it with the old one thinking maybe that's what is causing no spark, but I still get no spark. Would a sensor cause my car to not run at all, if so which ones? Also are there any fusible links on my eclipse? I just got a multi-meter today also, I'm not sure how to check the wires if they get ohms exactly. Do I plug one tead to the beginning of a wire and then the second tead at the other end? Most of the plug in wires go to the ECU, battery, or both? Also do all the sensors go to the ECU?


These are some OHM readings I got:

cam sensor (CMP) - 3.72 ohm
EGR - 4.56ohm
ECT sensor - 6.19ohm
MAP sensor - 0.38ohm
TP sensor (upper part of TB) - 0.41ohm on port holes 1&3 |-| 17.5ohm other
TP sensor (lower electric clip for throttle body) - 9.0 ohm
knock sensor - 12.4ohm
fuel pump - 0ohm

Do the readings look accurate enough? On the TP sensor on the upper part of the throttle
body I tested port hole 1 and 3 with the 2 teads and I got 0.41ohm then I switched up the
teads to different port holes and got a 17-18 reading, if you get 2 different readings on
the same sensor does that mean something is wrong. Also I get no ohm on my fuel pump but I
can get it to run.

RE: Electrical Problem?
 

needs new computer chip

RE: Electrical Problem?
 

Needs to be taken to a shop so the figure it out without throwing money into it.