no start condition?

2003 MITSUBISHI ECLIPSE
225,000 MILES • 3.0L • V6 • FWD • AUTOMATIC
Avatar
KEETAN BRUMM
  • MEMBER
  • 13 POSTS
Long story short
03 Eclipse GT 3.0 V6 6G72
Not starting, cranks but will not start.
Has a brand new battery and MAF sensor
Not getting spark, or power to fuel pump(fuel pump works)
Used a scanner tool, no codes.
Check engine light is on.
Not equipped with immobilizer and if it is, it's not activated.

The car is not getting power through the wiring harness to the fuel pump.Inside the dash, checked the relays and fuel pump relay (2) is not getting a signal. However the relay clicks fine when put in the first fuel pump relay slot. So relay works, just not the second slot.

Checked the engine fuse box and the relay slot on the side. The bottom two relays also are not working, however again the top relay works and when swapped around the relays themselves work, just not those relay slots.

Checked my CPS. I am getting twelve volts to power, do not remember ground. And when using the scan tool it registers around 250 rpm's when cranking the car.

Honestly at a loss with this one.
Jul 28, 2017 at 6:23 PM
Advertisement
Avatar
HMAC300
  • ✓Experienced Mechanic
  • 48,601 POSTS
due ot a battery disconnect it may be the security system see link.
https://www.2carpros.com/articles/how-to-reset-a-security-system
Jul 29, 2017 at 12:05 AM
Avatar
KEETAN BRUMM
  • MEMBER
  • 13 POSTS
It is not the security system. It has not been tripped and there is no light on dash to prove otherwise. Also, the security system in my vehicle is the immobilizer, which I explain in my OP has not been tripped.
Jul 29, 2017 at 6:25 PM
Avatar
HMAC300
  • ✓Experienced Mechanic
  • 48,601 POSTS
check relays in picture as I do not know which ones you are talking about. try tweaking the prongs on relays and use some dielectric grease on prongs for better contact. it may be fuel pump relay and not getting pressure to rail. you can also check fuel pressure with a gauge auto parts rent it. See link.
https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator
Images (Click to enlarge)
Attached Media
Attached Media
Jul 30, 2017 at 1:08 AM
Avatar
KEETAN BRUMM
  • MEMBER
  • 13 POSTS
Going off the image. MFI relay and A/T relay in the engine bay are not working. However when swapped with the A/C relay the relays themselves work. And fuel pump relay (2) in cabin box. Also believe me there is fuel pressure, my gas stained clothes from last week can vouch for that. lol
Jul 30, 2017 at 1:55 AM
Avatar
KEETAN BRUMM
  • MEMBER
  • 13 POSTS
Going off the image. MFI relay and A/T relay in the engine bay are not working. However when swapped with the A/C relay the relays themselves work. And fuel pump relay (2) in cabin box. Also believe me there is fuel pressure, my gas stained clothes from last week can vouch for that lol
Jul 30, 2017 at 2:02 AM
Advertisement
Avatar
HMAC300
  • ✓Experienced Mechanic
  • 48,601 POSTS
do as I said to tweek the prongs to make better contact in fuse box other wise it's a fuse box problem the mfi relay not working is probably why vehicle won't start. tweek means to bend it slightly but not enough so it won't work.
Jul 30, 2017 at 7:03 AM
Avatar
KEETAN BRUMM
  • MEMBER
  • 13 POSTS
Tweeking did not help
Jul 30, 2017 at 11:15 PM
Avatar
HMAC300
  • ✓Experienced Mechanic
  • 48,601 POSTS
then the fuse box has to be looked at to see if it can make a better connection to those relays.check to see if you have broken wire from fuse in pic.
Image (Click to enlarge)
Attached Media
Jul 30, 2017 at 11:22 PM
Avatar
KEETAN BRUMM
  • MEMBER
  • 13 POSTS
Will check after work. My mechanic told me to pick up a new ECU and try that. Is that a possible cause?
Jul 30, 2017 at 11:42 PM
Avatar
HMAC300
  • ✓Experienced Mechanic
  • 48,601 POSTS
it could be but the fuse powers a few things including ecu
Jul 31, 2017 at 12:14 AM
Avatar
KEETAN BRUMM
  • MEMBER
  • 13 POSTS
Hmm alright, well I knew I was in for some digging and diagnostics when I bought the damn thing. Plus the wiring diagrams are all for "00-05" models haven't been able to find anything specific to mine. Like the fuse box diagrams. My engine bay box doesn't have a starter relay like showed in the picture you posted earlier. Doesn't even have those contacts for that spot in the relay box. Makes diagnostics hell.
Jul 31, 2017 at 12:21 AM
Avatar
HMAC300
  • ✓Experienced Mechanic
  • 48,601 POSTS
is this a gts or what model gt? that may make a difference I can send engine diagram but it may make a diff if like turbo etc.
Jul 31, 2017 at 2:25 AM
Advertisement
Avatar
KEETAN BRUMM
  • MEMBER
  • 13 POSTS
Just plain jane GT, non turbo
Jul 31, 2017 at 3:49 AM
Avatar
HMAC300
  • ✓Experienced Mechanic
  • 48,601 POSTS
ok i'll send engine diagrams but they wil be small so not sure they will blow up.
Images (Click to enlarge)
Attached Media
Attached Media
Attached Media
Attached Media
Attached Media
Attached Media
Attached Media
Attached Media
Jul 31, 2017 at 5:04 AM
Avatar
KEETAN BRUMM
  • MEMBER
  • 13 POSTS
Well some blow up better than others, but definitely seem more accurate than the diagrams I have dealing with up till now
Jul 31, 2017 at 5:32 AM
Avatar
HMAC300
  • ✓Experienced Mechanic
  • 48,601 POSTS
well If you have a magnifying glass you can try that and they are split as that is why there are so many there are actually only 4
Jul 31, 2017 at 6:06 AM
Avatar
KEETAN BRUMM
  • MEMBER
  • 13 POSTS
Damn, well anyways back to business, checked all the relays did the tweeking no luck. About to check the wiring
Jul 31, 2017 at 7:09 AM
Avatar
KEETAN BRUMM
  • MEMBER
  • 13 POSTS
No breaks on the wiring
Jul 31, 2017 at 7:56 AM
Avatar
KEETAN BRUMM
  • MEMBER
  • 13 POSTS
Fuel relay 2 is working though(started working after I reseated some of the grounds in the engine bay. Not sure how the two are related but not complaining)
Jul 31, 2017 at 7:57 AM
Avatar
KEETAN BRUMM
  • MEMBER
  • 13 POSTS
ALRIGHT! Relay and pump are working now, but a new issue has risen lol I haven't tested for spark yet, but there is a semi loud ticking sound in the engine bay, seems to be coming from around the throttle body area.
Jul 31, 2017 at 8:49 AM
Advertisement
Avatar
HMAC300
  • ✓Experienced Mechanic
  • 48,601 POSTS
it may be the iac motor causing that try cleaning throttle plate and iac hole with choke cleaner. you may have to drive it once it's running for the ticking to stop sounds like it is hunting to where it is supposed to be.
Jul 31, 2017 at 9:18 AM
Avatar
HMAC300
  • ✓Experienced Mechanic
  • 48,601 POSTS
because this is my last day if any other problems repost your question thanks for using 2 carpros
Jul 31, 2017 at 9:20 AM
Avatar
LEYNA07
  • MEMBER
  • 41 POSTS
I seem to be having the same issues now would this pertain to manual transmission eclipse also I have same issue not getting ground contact on my fuel pump relay which not sure if correct gets it's ground from the mfi but now if I follow wire that goes to ecu to check for break I'm following it to the ecu in front engine fuse box or the inside side dash fuse box also thing is this is on a dodge stratus rt that has a Mitsubishi 6g72 engine where I also get confused when trying to get schematic to match my vehicle.. Someone help please.
Aug 21, 2022 at 3:31 AM
Avatar
LEYNA07
  • MEMBER
  • 41 POSTS
it was the fuel relay btw
Aug 21, 2022 at 3:40 AM
Add a reply
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.

Ask a new question

Frequently Asked Problems for This Vehicle

Advertisement