The Top DSM Community on the Web

For 1990-1999 Mitsubishi Eclipse, Eagle Talon, Plymouth Laser, and Galant VR-4 Owners. Log in to remove most ads.

Please Support Rix Racing
Please Support STM Tuned

2G Car runs like crap, here's the codes and what I've done.

This site may earn a commission from merchant
affiliate links, including eBay, Amazon, and others.

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.

DsmDanielson

Proven Member
104
0
Jul 13, 2016
Peoria, Arizona
First off, yes I am new here. Already know to use good grammar, etc. I just need some help. I'm new to Dsm's so please bear with me thank you. Check profile for car info. So I bought my dream car 2 weeks ago. Had a bad ecu sensor ground, swapped ecu. Changed maf... STILL THROWING P0100 CEL?!? Also throwing codes for rear 02 (knew that, its gone), wastegate solenoid, and evap. Car runs like absolute crap. Won't boost over 5psi, (probably boost leak but could be limp mode), there's an oil leak from my spark plugs as well. What's really killing me is the maf. I checked the connections, changed maf with known good one. Also, I noticed the car won't run on karman. It will start up and instantly die. Its on hotwire right now but I know that's not right since I'm using stock 2g maf. Please help me this is my dream car and I knew it would be problematic but this is insane. I did search and couldn't find any results. I just want to be able to boost...
 
Edit: Car ran lean when I swapped ecu the other day, now runs rich. I have a wideband but its not set up. Idk how and I think the wideband o2 is missing. Here's my engine bay; what do y'all see that I don't?
 

Attachments

  • KIMG0018.JPG
    KIMG0018.JPG
    305.2 KB · Views: 118
  • KIMG0019.JPG
    KIMG0019.JPG
    296.1 KB · Views: 130
  • KIMG0020.JPG
    KIMG0020.JPG
    289.7 KB · Views: 117
You'll want to switch the SAFC setting back to karman, you aren't doing yourself any favors switching that to the wrong setting.

My guess would be a wiring issue somewhere, either with the 6 bolt swap or SAFC. Better get a multimeter and start checking wiring.
 
You'll want to switch the SAFC setting back to karman, you aren't doing yourself any favors switching that to the wrong setting.

My guess would be a wiring issue somewhere, either with the 6 bolt swap or SAFC. Better get a multimeter and start checking wiring.
Thanks for the input. I will invest in a multimeter. You said check the wiring for the 6 bolt swap, so should I be making sure the connections match the 1g block configuration or the 2g ecu configuration? Its a 6 bolt block with 7 bolt head if that helps. I forgot to mention that I also have an exhaust leak at the the flex piping where the cat used to be. Would that be a contributing factor? Also, when I use the multimeter, I'll post the results back. I know its not the Ecu, so it must be the safc or maf connection. Nice Talon by the way
 
Last edited:
I've never done a 6 bolt swap, nor looked into it, so I am not much help with that.

An exhaust leak shouldn't have any bearing with it running like that although a boost leak could contribute to those symptoms. May want to also invest in a boost leak tester for troubleshooting. You can make your own or buy one. I bought one from Silicone Intakes in the past and it works great.
 
I've never done a 6 bolt swap, nor looked into it, so I am not much help with that.

An exhaust leak shouldn't have any bearing with it running like that although a boost leak could contribute to those symptoms. May want to also invest in a boost leak tester for troubleshooting. You can make your own or buy one. I bought one from Silicone Intakes in the past and it works great.
Sorry for the late reply; lost my phone.
Got multimeter and checked maf wiring and followed proper instructions using fellow dsm'er Luv2ralley's guide. Checked out okay. so maf and wiring AND ecu is good. Switched back to Karman setting and car starts and dies still. Only will idle on hotwire setting. I noticed in the weeks prior that when i got the car to idle on karman and let it warm up, I would then press on gas and it would die, but ONLY on karman setting. What gives? Any suggestions?
 
Where are those vacuum lines running to that are going into your firewall (throttle body to firewall and fuel pressure regulator to firewall)? Did anyone else notice that? I don't think you have the evap solenoids anymore, unless they were moved.
Um I'm actually not sure. I'll check and take a picture for you
Would that be the reason for my evap code if my solenoid isn't there? How do I bypass that?
 
If those lines are not going to a solenoid, then that is probably the cause of the code. What year is your car? If it is a 98/99 you can use ecuflash to turn off the CEL for emissions like I did. If you have a flashable ECU I can send you the ROM/tune to shut those off.

From the pictures it looks like you have a 95/96?
It also looks like you have a 1G Cam angle sensor, you could always buy a 98/99 flashable ecu for around 100 ( I happen to know someone with a spare)

HEY! I think you need to invert your spark plug wires! You are running a 1G cas, try swapping your plug order to 4-1-2-3 instead of 2-3-4-1 - Anyone can you confirm this?
 
Last edited:
If those lines are not going to a solenoid, then that is probably the cause of the code. What year is your car? If it is a 98/99 you can use ecuflash to turn off the CEL for emissions like I did. If you have a flashable ECU I can send you the ROM/tune to shut those off.

From the pictures it looks like you have a 95/96?
It also looks like you have a 1G Cam angle sensor, you could always buy a 98/99 flashable ecu for around 100 ( I happen to know someone with a spare)
Its a 97 haha. Maybe I should really get my side skirts and front bumper back on... I have 98 blackbox ecu so ecuflash would be awesome. Just not much money right now. I already spent about $1000 fixing what the previous owner messed up. Pictures of those vacuum lines coming soon as well.
Edit: as for my plug wires, there used to be a 95 EPROM in my car and the ecu pins were switched instead to run a 4-1-2-3 configuration. Since I swapped the ecu, I had to switch to 2-3-4-1. Its right. Car fired up fine before all this mess
 
Last edited:
Have you done a boost leak test? When you can get the car to idle, what is it idling at?
I know this sounds silly on my behalf but I have not done a BLT. I plan on making one but don't exactly know what the best materials are. When it was idling at first, I got it to around 850 rpm when I tweaked the biss screw, (this was done after ecu reset meaning no cel yet) soon after the cel came on idle jumped to 1000-1100. Been there ever since.
 
Wire order does need switched up:

Now go ahead and put the valve cover back on, and put your spark plugs back in. Now to use this cas you have to reverse the order of the spark plugs. From left to right, your cylinders are 4-3-2-1. The normal setup of spark plugs into the coil pack from left to right is 4-1-2-3. You need to reverse this so the order on the coil pack is (from left to right): 3-2-1-4.
 
Wire order does need switched up:

Now go ahead and put the valve cover back on, and put your spark plugs back in. Now to use this cas you have to reverse the order of the spark plugs. From left to right, your cylinders are 4-3-2-1. The normal setup of spark plugs into the coil pack from left to right is 4-1-2-3. You need to reverse this so the order on the coil pack is (from left to right): 3-2-1-4.
Wire order does need switched up:

Now go ahead and put the valve cover back on, and put your spark plugs back in. Now to use this cas you have to reverse the order of the spark plugs. From left to right, your cylinders are 4-3-2-1. The normal setup of spark plugs into the coil pack from left to right is 4-1-2-3. You need to reverse this so the order on the coil pack is (from left to right): 3-2-1-4.
My valve cover and plugs are on already. I've never taken them off? Anyway, spark plug configuration is slightly confusing to me. But tell me if this is correct; left to right on cylinders is 4-3-2-1, left to right on coil pack is 4-3-2-1 as well? So cylinder 4 goes to coil 3, cylinder 3 goes to cylinder 2 and so forth?
 
Also do a Boost Leak Test.
You can make your own, or have one made: http://turboboostleaktesters.com/order-a-boost-tester/
I'm no help with the SAFC.

Check the codes for what the mean and then you can see what its telling you to fix.
I will make a tester. It seems I need to flash my black box ECU to get rid of evap and rear o2 codes. Luv2rallye gave me a guide to check my safc and maf connections, only thing still questionable is the waste gate solenoid cel I've been getting.thank you everyone for your contributions by the way. I'm learning fast.
 
You are correct on the cylinder layout (Left to right 4-3-2-1) On the coil pack it should be 4-1-2-3
Right. But in my case since my wires need to be switched due to ECU swap, it's 3-2-1-4. Perfect, I got it.
Does anyone know why my car wouldn't run on karman and only on hotwire with a 2g maf? It was wired correctly so I'm stumped on that part
 
Sorry I know it's been a while but I issues are resolved! Maf was grounding out incorrectly, giving fuzzy signals. Evap solenoid was bad, changed that. Did a boost leak test and found leaks in the TB and IC piping, and sealed those up. All I have to do now is save for open port cable, unless someone wants to let me borrow theirs, so I can tune for injector size and get rid of the safc. THANKS EVERYONE
 
Sorry I know it's been a while but I issues are resolved! Maf was grounding out incorrectly, giving fuzzy signals. Evap solenoid was bad, changed that. Did a boost leak test and found leaks in the TB and IC piping, and sealed those up. All I have to do now is save for open port cable, unless someone wants to let me borrow theirs, so I can tune for injector size and get rid of the safc. THANKS EVERYONE
Where was the ground problem that fixed your maf issue?
 
Support Vendors who Support the DSM Community
Boosted Fabrication ECM Tuning ExtremePSI Fuel Injector Clinic Innovation Products Jacks Transmissions JNZ Tuning Kiggly Racing Morrison Fabrications MyMitsubishiStore.com RixRacing RockAuto RTM Racing STM Tuned

Latest posts

Build Thread Updates

Vendor Updates

Latest Classifieds

Back
Top