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| | Noob here, did i overmod? | |
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miniz33
Posts : 25 Join date : 2014-03-20 Location : East Providence
| Subject: Noob here, did i overmod? Thu Mar 20, 2014 1:27 pm | |
| Hello people of BADASS, names Brandon and I'm glad to be a part of a group of car enthusiasts like myself! Matter of fact its been three years in coming to get a nice adriatic blue tow package 94 D body fleetwood! It needed a motor, bought one with 11k miles on it, yes you read that right! I recently burned my right hand pretty bad, so I had a friend kindly offer to help out, I believe whos also a member on here! New motor went in with fresh opti, car still has mechanical fan, installed new plugs/wires, 02's when she went in to a place called jamies exhaust in pawtucket for a full 2.25 exhaust, highly recommend him btw! I added headers by bbk, the K&N FIPK CAI, and a 2500 stall by performabuilt with a 160 stat. Car runs well but gets 12mpg on average, perhaps 18 on highway with gentle driving, occasionally gets a low egr code, which I assume is from low back pressure, also throws a knock sensor code, maybe I made a mistake when I removed them to drain the motor prior to install, I used a good amount of thread sealer to put them back and made sure they were tight. Most concerning is a code for ECT running cool. My HVAC allows me to see the ECT running 180 to 185 on a cool day, spec is 195, gauge installed in cylinder head is saying 175. Is my 160 t stat too much for a car with a mechanical fan? Is it the cool running thats killing my mileage? Or the fact my car still is running the 110k mile delco coil? Not sure if I should send out my pcm for a tune when my car goes for some light body work, or just reinstall the stock stat? I do love the power the car has and would rather not lose any, what do you folks think? Thanks so much in advance!
Last edited by miniz33 on Thu Mar 20, 2014 4:16 pm; edited 1 time in total | |
| | | silverfox103
Posts : 1540 Join date : 2009-01-25 Age : 28 Location : Littleton, NH & St. Simons Island, GA
| Subject: Re: Noob here, did i overmod? Thu Mar 20, 2014 1:49 pm | |
| Hey Brandon
Glad you found us. We have quite a few Fleetwood guys here, including me. They're should be some guys dropping in, who can help you with your engine problems. I have a 96 Fleetwood, I would say the mileage is close to twice what your getting. Mine is stock.
Tom | |
| | | miniz33
Posts : 25 Join date : 2014-03-20 Location : East Providence
| Subject: Re: Noob here, did i overmod? Thu Mar 20, 2014 4:19 pm | |
| Thanks for the reply, I figured as much, a couple friends of mine had them and they would get over 20 on the highway, about 16 in the city or so. I love mine but really hope I dont have to convert it to stock. | |
| | | MASShole9C1
Posts : 4294 Join date : 2009-12-16
| Subject: Re: Noob here, did i overmod? Thu Mar 20, 2014 7:22 pm | |
| Hey, welcome to the forum. Make sure to check out our April mod day get together thread. Maybe you can come by and meet some of the members. Great group of guys here.
I think a reasonable explanation for your issues is that you changed crucial components such as the TC with out a tune. The ECM needs to be reprogrammed in order for it to see the new TC as normal operation. It's probably correcting because your mods are out of factory ECM settings. Also, you should change your knock sensor the the LT4 version. It would detect less "detonation" or what the ECM THINKS, is detonation. It has more allowances and won't retard your timing so much. | |
| | | sdstick
Posts : 4292 Join date : 2009-03-20 Location : Revere, MA
| Subject: Re: Noob here, did i overmod? Fri Mar 21, 2014 8:44 am | |
| Welcome Brandon 1) Dont believe what people tell you for mileage...they all lie...lol 2) Yes, programming is always a good idea when changing from stock 3) You really didnt say if you reconnected the EGR or not ?(I see you have headers & the code) 4) New knock sensors are somewhat easy. Knock will retard timing. 5) Does the car have the secondary electric fan? like a RMW? I dont know D's but if so, take off the mechanical I run my wagon without & have no issues 6) Do you think the ECT is bad? you can measure the resistance vs temp to see. They are also cheap. 7) Dont worry about the coil if it runs good See #1) above (but yes...12mpg is not good) | |
| | | miniz33
Posts : 25 Join date : 2014-03-20 Location : East Providence
| Subject: Re: Noob here, did i overmod? Sat Mar 22, 2014 3:25 pm | |
| Thanks for the insight guys, went on a highway trip today and got between 20-23, its stop and go that murders me. But then again its got a wonky stall converter and lots of weight. These damn digital fuel gauges aren't exact science either, took the boat out and had a blast when I ran into a group of mustangs, an ls3 swapped former lt maro' and a stock camaro. They looked horrified that a fleetwood was keeping pace with a group that was trying to lose me haha. God bless these b/d bodies! | |
| | | tonyc712000
Posts : 126 Join date : 2013-10-04 Location : Ct.
| Subject: Re: Noob here, did i overmod? Sun Mar 23, 2014 12:25 pm | |
| - miniz33 wrote:
- Thanks for the insight guys, went on a highway trip today and got between 20-23, its stop and go that murders me. But then again its got a wonky stall converter and lots of weight. These damn digital fuel gauges aren't exact science either, took the boat out and had a blast when I ran into a group of mustangs, an ls3 swapped former lt maro' and a stock camaro. They looked horrified that a fleetwood was keeping pace with a group that was trying to lose me haha. God bless these b/d bodies!
Don't think you over modified at all! | |
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