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Connecting Rod Bearings in a 4.9 Caddy Motor.
(Technical Discussion & Questions - by Capt Fiero, started: 12-07-2013, last post: 2013-12-08 23:02:33 CET)
As many of you know my new motor installed in my 4.9 5spd Fiero was delivered to me with an engine knock. I got a partial refund and told the shop I never wanted to hear from them again. That was nearly a year ago. I paid them for the other work they did, and took my car to deal with myself. ...
Score: 499, Size: 56 bytes
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Anyone have a wiring diagram for the Fiero Factory (Injection Tech?) 4.9 harness?
(Technical Discussion & Questions - by Raydar, started: 12-01-2013, last post: 2013-12-02 18:50:49 CET)
I'm in the process of swapping to a different ECM. I'm looking for a diagram of the harness that the Fiero Factory used in their swap.I already have the Cadillac service manuals, but I'd like to know the specific tweaks/changes the FF made before I tear into the harness.If nothing else, I'd like to...
Score: 499, Size: 88 bytes
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messed up 4.9 harness need help
(Technical Discussion & Questions - by racingfortheson, started: 01-12-2015, last post: 2015-01-14 13:32:38 CET)
I'm building my harness using this page,http://www.fiero.nl/forum/Forum2/HTML/098096.html and everything thing seems to be going good when I realized I messed up. My 4.9 has 2 o2 sensors and I've unplugged one from the computer plug and now don't know where to pit it back. Can someone help and then...
Score: 499, Size: 47 bytes
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4.9 Suddenly Won't Idle. TPS Reads .392 v With Foot Off the Gas
(Technical Discussion & Questions - by Warlordsix, started: 07-19-2020, last post: 2020-07-20 00:23:33 CEST)
On an easy drive last night the engine suddenly lost its ability to idle. Actually, it would barely idle, maybe 300 rpm, but I suspected it would die if I didn't keep my foot lightly on the pedal. Car has always previously idled well, 650-750 rpm. Put my ALDL Scan and ALDLDroid on it this am,...
Score: 499, Size: 75 bytes
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4.9 wiring harness?
(Technical Discussion & Questions - by dtrader, started: 03-21-2019, last post: 2019-03-22 05:44:14 CET)
Anyone still making the wiring harness for the 4.9/4t60e swap? I’ve got the uncut originals... figured I’d inquire before starting it myself
Score: 499, Size: 27 bytes
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4.9 Fiero Oil Leak from Head Gasket
(Technical Discussion & Questions - by Fiero Tom, started: 05-29-2015, last post: 2015-05-29 19:20:13 CEST)
I have a lot of oil on the exhaust manifolds and I've already replaced the valve cover gaskets. How hard is it to replace the head gaskets with the engine in the car?
Score: 499, Size: 45 bytes
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Calling all the Cadi 4.9 experts. Starter question.
(Technical Discussion & Questions - by zmcdonal, started: 09-27-2015, last post: 2016-05-27 03:38:56 CEST)
Ok I need some advice from the 4.9 guys. This isn't really Fiero related but I have a 91 Eldorado with a 4.9 and you guys know more and are a more reliable source than the cadi forums. I need a new starter for my 4.9. I got the old one out but it is a super tight fit to remove without dropping the...
Score: 499, Size: 61 bytes
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2.8 ---> 4.9 motor question on wiring fuel pump?
(Technical Discussion & Questions - by Spadesluck, started: 04-10-2017, last post: 2017-04-10 19:26:28 CEST)
I am going to put in a new fuel pump and was wondering if while doing that I should change the wiring according to Darth? I plan on using a Walbro 255 with the 4.9 and be done with it.
Score: 499, Size: 59 bytes
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4.9 with Allante Intake
(Technical Discussion & Questions - by 87convert, started: 07-04-2017, last post: 2017-07-07 18:30:28 CEST)
The heater hose connection to the intake is made to a formed pipe which is inserted into a hole in the rear of the intake. The pipe on my intake has come loose. There does not appear to be anything mechanically holding the pipe in place. I don't think that pushing the pipe back into the hole...
Score: 499, Size: 33 bytes
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Distributor for a Cadillac 4.9
(Technical Discussion & Questions - by patkagi, started: 08-07-2018, last post: 2018-08-23 13:11:29 CEST)
My distributor fell apart the other day and I am looking for a replacement. I'm running a Cadillac 4.9 v8 with a 4.5 intake manifold and a Holly 500 carb. The distributor bushing froze up and destroyed the housing. If anyone has a replacement for sale, please let me know. I'm anxious to get...
Score: 499, Size: 38 bytes
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