somanycarissues
Probationary Member
- 6
- 1
- Jul 24, 2022
-
Washington
So I've had some issues with my 94 Eclipse ever since I bought it about a month ago. The guy I bought it from said just needed the ECU fixed, so I sent it out and got it chipped and they said everything checked out to be good.
So the issue is stumbling at 5k at WOT and about 50% throttle I can make it to about 6k before stumbling. On my data logs I keep pulling code 21 for coolant sensor and the sensor is reading at 300-315F degrees which is what I'm thinking my issue is coming from and I have a backfire at idle but no miss.
I replaced the ECT sensor and wired in the correct pigtail. I also installed a 2g MAF since I read that the 1g has awful flow and I'm running a 16g turbo so I figured why not since I want to run more boost anyways.
While installing the new MAF, I notice the coolant level sensor in the overflow tank was unplugged so I plugged it in and when I went to start my car and nothing, I unplugged it again and started without any issue.
I've had all sorts of other unplugged connectors and spliced wires so I'm thinking of getting a new harness and just having that peace of mind of knowing all of my wires are good because I don't know where to look for the solution anymore.
If it's a fueling issue I have a Walbro 255 pump I'm waiting to install once I get an FPR, but beyond that I'm lost. Any help is appreciated
Known goods:
New NGK copper plugs gapped to 0.028" and 7.5mm wires
New ECT sensor and wiring correct (blk/grn to ECU signal, ylw/grn to 5v pos)
New 2g MAF
Good ECU with ECMLink
At this point seems like the dude may have swapped wires going into the back of the ECU
So the issue is stumbling at 5k at WOT and about 50% throttle I can make it to about 6k before stumbling. On my data logs I keep pulling code 21 for coolant sensor and the sensor is reading at 300-315F degrees which is what I'm thinking my issue is coming from and I have a backfire at idle but no miss.
I replaced the ECT sensor and wired in the correct pigtail. I also installed a 2g MAF since I read that the 1g has awful flow and I'm running a 16g turbo so I figured why not since I want to run more boost anyways.
While installing the new MAF, I notice the coolant level sensor in the overflow tank was unplugged so I plugged it in and when I went to start my car and nothing, I unplugged it again and started without any issue.
I've had all sorts of other unplugged connectors and spliced wires so I'm thinking of getting a new harness and just having that peace of mind of knowing all of my wires are good because I don't know where to look for the solution anymore.
If it's a fueling issue I have a Walbro 255 pump I'm waiting to install once I get an FPR, but beyond that I'm lost. Any help is appreciated
Known goods:
New NGK copper plugs gapped to 0.028" and 7.5mm wires
New ECT sensor and wiring correct (blk/grn to ECU signal, ylw/grn to 5v pos)
New 2g MAF
Good ECU with ECMLink
At this point seems like the dude may have swapped wires going into the back of the ECU
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