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01-20-2018, 12:10 AM | #1 |
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Location: Lubbock, TX
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IAC not reading after Eaton swap
Well finished up the swap just in time to hit the dyno date today. Had the car at the shop right at 8am after making the hour long drive (towing). Called to check on it at 3:30 today only to find out they can get the IAC to communicate. Tuner thinks it's a wire or PCM issue. He tried another IAC but didn't change the outcome.
Car starts just fine, idles right at 1k but will hunt between 800 and 1k. I told the tuner this before bringing the car in and he assured me he could clean it up with the tune. Car has 60lb injectors with cobra tank and pumps on E85. Only code we are throwing is the EGR code. Anything I can pass onto the tuner that might help, really disappointed she didn't get to come back home today?
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Steeda tri axe shifter MRT H pipe w/Magnaflow cat back exhaust JLT air intake PHP intake spacer Aluminum Driveshaft SLP line-lock 4.10 gears Moser axles welded axle tubes ET Radials Dyno 300whp 318wtq n/a 415whp 515wtq NX 125 shot Someone needs to slap the stupid outa you Last edited by shake this; 01-20-2018 at 09:57 AM. |
01-20-2018, 01:08 AM | #2 |
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Did you have to cut and extend the wires? It sounds like it's a mechanical issue. If the second IAC didn't help I'd check all the connections.
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New Ride: 2004 Mystichrome Cobra-Accufab SBTB and plenum, Steeda 2.8" upper, Bassani X, Borla Stingers, Mcleod RXT, MGW shifter, Level 5 halfshafts, chrome FR500's, Stiffler's FIT system and DS safety loop, GT pumps, BA3000, tuned by owner |
01-20-2018, 09:51 AM | #3 |
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Join Date: Sep 2007
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Re: IAC not reading after Eaton swap
The cobra iac is different than the Mach iac. Are you using the cobra one already?
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2004 Mach 1 #6956 5spd w/IUP Eaton swap, longtubes, built 3.73 SRA 452hp/409tq dynojet🏁 |
01-20-2018, 09:55 AM | #4 |
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Re: IAC not reading after Eaton swap
Yes we did but he said continuity was good from the IAC to the wire harness on the back driver firewall. He was going to check Monday from the firewall to the PCM. The part I don't understand is he had the car all day on Friday and wasn't able to track down the issue. Unless he wasn't able to actually work on it the majority of the day.
As I was laying awake in bed stressing over this last night, I remember another connector on the passenger side engine compartment that wasn't used (map sensor I tink). Is it possible that they both have the same connector type and I have the wrong one plugged into the IAC? It baffles me that we never saw a code regarding an issue with the IAC
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Steeda tri axe shifter MRT H pipe w/Magnaflow cat back exhaust JLT air intake PHP intake spacer Aluminum Driveshaft SLP line-lock 4.10 gears Moser axles welded axle tubes ET Radials Dyno 300whp 318wtq n/a 415whp 515wtq NX 125 shot Someone needs to slap the stupid outa you |
01-20-2018, 09:56 AM | #5 |
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Re: IAC not reading after Eaton swap
Yes, we installed the cobra one because we didn't like how the Mach IAC almost hits the hood.
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Steeda tri axe shifter MRT H pipe w/Magnaflow cat back exhaust JLT air intake PHP intake spacer Aluminum Driveshaft SLP line-lock 4.10 gears Moser axles welded axle tubes ET Radials Dyno 300whp 318wtq n/a 415whp 515wtq NX 125 shot Someone needs to slap the stupid outa you |
01-20-2018, 10:36 AM | #6 | |
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Re: IAC not reading after Eaton swap
Quote:
Bigger shops have lots of cars and priorities being juggled around. Try not to wig out if things take longer than you think they should.
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2004 Mach 1 #6956 5spd w/IUP Eaton swap, longtubes, built 3.73 SRA 452hp/409tq dynojet🏁 |
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01-20-2018, 01:15 PM | #7 |
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Re: IAC not reading after Eaton swap
I know I shouldn't "wig" out and you're absolutely right. It's just frustrating when you've been working toward something for 2+ years for it to all come down to something like this. I'm sure they will figure it out next week. I"ll post back what they find just encase someone else ever comes across this issue.
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Steeda tri axe shifter MRT H pipe w/Magnaflow cat back exhaust JLT air intake PHP intake spacer Aluminum Driveshaft SLP line-lock 4.10 gears Moser axles welded axle tubes ET Radials Dyno 300whp 318wtq n/a 415whp 515wtq NX 125 shot Someone needs to slap the stupid outa you |
01-21-2018, 09:29 AM | #8 | |
Can't be bridled
Join Date: Sep 2007
Location: Texas
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Re: IAC not reading after Eaton swap
Quote:
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2004 Mach 1 #6956 5spd w/IUP Eaton swap, longtubes, built 3.73 SRA 452hp/409tq dynojet🏁 |
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