Those hood vents look familiar...where are they from? I'd say that if I was to copy that idea, I'd give them a slight V to follow the front of the hood. Very nice work. Is that a stock Cadillac alternator? It looks big to me. Those are Sunbird seats, right? I see lumbar support adjustments. Did you cut down your shifter? I see that you opted for the push-button shifter knob rather than the T-handle. ----------------- John DuRette Black 85 SE, undergoing work as we speak!
[This message has been edited by USFiero (edited 12-27-2003).]
OK, so here's the run down: My Fiero stared as a plain jane '86 four banger with only rear defrost as an option. I have added: a).'92 4.9L Cadillac motor with 4T60E transmission run by the '2240 ecm with a chip by Rockcrawl.(Thanks Rockcrawl) b).power windows, door locks, and mirrors c).functional hood vents fron a Trans AM GTA d).wheels and tires from a '01 Toyota Celica e).exhaust system flows thru 2 1/2" stainless steel pipes to a high flow cat and then a Camaro flowmaster muffler, and out of Cadillac STS tips f).GT gages, 120mph speedo g).GT door pannels with map pockets h).monsoon am/fm/cd from Kru, looks good, sounds even better i).fully rebuilt suspension with all new ball joints and all poly bushings.
I think that's it. Things I need to do yet: a).headlight motors b).I need a passenger side outside door pannel in gold, if you got one let me know... c).got a little 'glass work on the passenger rear corner on the notchback section. d).replace the passenger side black rocker pannel that goes under the door.
The hood vents do match the angle of the hood, but it does'nt look like it in the pictures, The alternator is stock Caddy, and yes it clears the hood... Seats are Grand Am, the week after I installed these the yard had them in Beige, oh well...
question on the exhaust. Did you have to weld any of that and what model muffler is that? It looks like a job I might beable to swing off myself if I cut the trunk out. And how did you mount the muffler.
It looks like a sweet exhaust job.
You wouldnt happen to have the old exhaust order that you can pm me or email me, I want the same setup but makesure I get the right stuffs.
[This message has been edited by 86fieroEarl (edited 12-27-2003).]
All the exhaust parts are from "Jegs". The pipes are 2 1/2" diameter 180 degree stainless steel "J" bends that I cut to fit. I think I bought five of them. The STS tips are welded to the exit pipes. The system is held together using stainless steel muffler clamps. I have one coupling in the system inside the pipe that comes off the engine and before the "J" bend into the cat converter. That way you can spin things into place. The other weld is on the pipe that bolts to the manifold. I cut the "J" bend thru the center of the bend, I took a longer straight cut off piece of pipe to the muffler shop around the corner and asked him to flare the end for me. He said he needed the gasket to do it right, so I went to Autozone bought a gasket and back to the muffler shop. He bent the flare free of charge for me. I cut this flared piece off of the straight pipe about 2" long and welded it to the cut off "J" bend. I made an extra thick flange to hold this pipe to the manifold. No problems...
parts: 5pcs. 2 1/2" diameter stainless steel "J" bends 7pcs. 2 1/2" diameter stainless steel muffler clamps 2pcs. Cadillac STS tips off of ebay 1pc. 2 1/2" diameter pipe Hi-flow catalytic converter 1pc. 2 1/2" diameter in/out Camaro flowmaster muffler 1pc. flared ended pipe...take to muffler shop welding done by the guy at work...
The muffler itself is not mounted to anything. There are hanger mounts that come straight down from the bumper support bolt and muffler clamp to the exhaust right behind the STS tips, the other end mounts to the exhaust manifold with the thicker flange I had made. The exhaust is very sturdy, The motor doesn't move at all at idle, if you couldn't hear it you wouldn't know it was running....
Thank's for the kind words.... With the poly suspension the car handles great, I have owned sports cars since I was 18 years old,(45 years old now) a '73 corvette, 2 '76 Trans Ams, 2 '85 442's and my '92 Dodge Stealth which I am driving now. The Fiero used to be all over the road and was just a grocery getter, no fun to drive, it was just a car, now with the suspension and the 4.9/4T60E it is like driving my Stealth with the power of my vette. Handles great and goes too. The exhaust is a little loud with the flowmaster but no worse than a big Dodge Ram truck. I think it's a brain thing, big truck makes lots of noise, that's ok, little car makes lot's of noise, not ok. You do get used to it though, now it doesn't seem that bad, although now it's cold out and I've got the windows up. I really haven't beat it too bad yet, I'm afraid of breaking something, after picture taking I did get on it good a couple of times. Doesn't seem like it's spinning the tires(didn't hear any squeeling)but it just goooooooooooooes, the rear end hunkers down, the front comes up and you just hang on and go. Maybe I'm not getting my foot on the pedal right to push it all the way down, I'll have to try it again soon.
Dragon1/Brian
4.9/4T60E people, tell me this, I have one annoying quirk I would like to fix if possible, Scantool says all the sensors are working, operating temp is about 190deg to 200 deg. O2 sensor is working, idle is rock solid at 650rpm, I did the idle learn procedure and the ecm IS going into closed loop after warmup. Tach is off 150rpm to the fast side, thats ok though. Heres the problem, Car drives normal and upshifts fine, shifts when it's supposed to, feels good, lots of power. While driving, with your foot on the gas it revs up fine, take your foot off the gas and rpm drops to about 1300 rpm and stays there until you brake to a stop. The rpm seems to follow the slow down of the car and when the car stops rpm goes to idle of 650rpm. It seems like it fights you from 1300 rpm down to idle. I put it un nuetral once while stopping and it did the same thing. So it's not the tranny pulling it down so it's got to be something else. Any ideas???Thanks
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12:25 PM
86fieroEarl Member
Posts: 2203 From: Orlando, FL Registered: Jun 2002
Thanks for the info on the pipes, You just saved me from taking it to teh exhaust shop Lucky for me I have a flared end already that I salvaged from my old exhaust but I might take a new one in to get it flared.
Yours havent burned tracks because you have not floored it When I got my TV cable ajusted I floored the sucker it left a nice burn out down the street, I had some major fun till nieghbors started complaining about the noise ( no exhaust yet) With the TH 125 mine has to hit a pretty high RPM before it shifts ( TV cable may need to be ajusted more)
I still have the trunk to cut out and the looks of it there's a brake line I have to becarful of not cutting.
[This message has been edited by 86fieroEarl (edited 12-28-2003).]
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03:04 PM
PFF
System Bot
ED's85GT Member
Posts: 1054 From: Statesville, NC. Registered: Feb 2002
Thank's for the kind words.... the rear end hunkers down, the front comes up and you just hang on and go.
4.9/4T60E people, tell me this, I have one annoying quirk I would like to fix if possible, It seems like it fights you from 1300 rpm down to idle. Any ideas???Thanks
Mine does the same thing, rear end goes down, front end goes up and i get a big 'ol grin on my mug.
Someone (I think it was Rockcrawl) once explained that the caddy ecm lets off the ISC very slowly so that the caddy drivers wouldn't "test" their seatbelts everytime they let off the gas. Mine does it too, but i don't feel very much "fighting" as you are describing, maybe i've gotten used to it in the last 3500miles.
Ed
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04:10 PM
rockcrawl Member
Posts: 2528 From: Lehigh Valley, PA Registered: Jul 2000
The rpm seems to follow the slow down of the car and when the car stops rpm goes to idle of 650rpm. It seems like it fights you from 1300 rpm down to idle.
That can be very annoying and dangerous too. They will do that if the ISC isn't set correctly or if the VSS settings on the chip are not correct. Setting those two things has always corrected that problem on the car's I've worked on. Re-adjust the ISC plunger and see if that changes anything. I may have made a mistake on your chip. What size are your rear tires? Does the speedometer seem to be fairly accurate?
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07:03 PM
Fieroking Member
Posts: 2148 From: Coeur D Alene Idaho USA Registered: Jun 2002
Rockcrawl, The tire size is 205/50R16 87V, I will check the ISC again. Thanks everyone for the input.
Mark, I was going to paint it yellow but FieroKing beat me to it. Now I'll think I'll just touch up the gold. It's more sleeperish that way...
86fieroEarl, your welcome, if you need anything else let me know... make sure when you cut your trunk to leave the rear pannel, it keeps the heat off the tail lights...
FieroKing, very clean, looks good, I really like the yellow
Dragon1/Brian
[This message has been edited by Dragon1 (edited 12-28-2003).]
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09:53 PM
blackrams Member
Posts: 32275 From: Covington, TN, USA Registered: Feb 2003
------------------ Ron 88 Formula, 4.9, auto, daily driver 88 Formula, 3800 SCII/4T65E Swap in Process, almost done. 88 Formula, 5 Spd, 3.4 TDC Swap in Process, just started. 88 Formula, Stock, 5 Spd, T Top, Special Days Only!
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10:30 PM
Dec 29th, 2003
OH10fiero Member
Posts: 1541 From: struther OH Registered: Jun 2002
With the TH 125 mine has to hit a pretty high RPM before it shifts
Did you do any work to the TH125 before you did your install? I have a auto Fiero already for a different project, but I found someone who is nearly giveing away a 4.5 Caddy, might do this swap because it will be a LOT less work involved to get a V8 in the car than the original project i had planned.
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12:05 AM
86fieroEarl Member
Posts: 2203 From: Orlando, FL Registered: Jun 2002
Dragon1, my 4.5 idle used to hang up the same way you described. I got a Tech1a scantool and found that my VSS signal was 50% too slow and the ECM was not receiving brake signal input. I have corrected these problems and calibrated the ISC. It now works perfectly.
------------------ White '84 SE w/ '89 Deville 4.5L/440T4, '87 coupe front and rear facia, '86 GT decklid and spoiler, Grand Am GT 16" wheels, KYB shocks & struts
lowfierogt: thanks for the compliment, I put alot of hard work into it.
serge144: that's the one thing I haven't done yet, drive it with the scantool hooked up. I idled it in the driveway with the scanner hooked up and everything goes ok, idles at 650rpm, coolant temp at 200deg. O2 sensor working, and it goes into closed loop after warmup. runs very smooth, doesn't even move, and the speedo is accurate to about 3mph I will have to drive it with the scantool on and check that out. It's been a while since I've looked at the wiring diagrahms, does the VSS signal come from a replacable sensor??? Or how would I fix it if it was off. I guess I should drive it and see if it's off first.
Dragon1/Brian
[This message has been edited by Dragon1 (edited 01-16-2004).]
I think my '89 Caddy ECM setup is a lot different then yours. Rockcrawl's site has speedo info for your application. I only have one ECM connection for vehicle speed input and I tapped into that (purple wire) before it reached the speedo giving my ECM the correct 4000ppm signal. I had first used the stock ECM vehicle speed input wire which was 50% too slow because the Fiero speedo had halved the signal into a 2000ppm signal. The sensor I used was a stock '86 Fiero auto speed sensor in combination with a '86 Buick 440t4 transmission speedo setup.
Serge144... OK, I did use the info on Rockcrawls site when I wired mine and I did build the speedometer component thingie so my speedo would read right. And it does within 3 mph at 35mph. I will still drive the car with the scanner on and check what it happening, it's still possible I screwed something up.
Lucky for me I have a flared end already that I salvaged from my old exhaust but I might take a new one in to get it flared. 
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