HELP!!! 82xfire
Thread Starter
Heel & Toe
Joined: Apr 2014
Posts: 22
Likes: 0
HELP!!! 82xfire
82 xfire engine. Was running rich and boggy, Pulled codes and got 33,34 and replaced MAP sensor engine light kept coming on. So then pulled a 15 code. So I replaced coolant sensor. Then 34 came back , so looking around I noticed whoever had it did a messy job on the intake. pulled replaced all gaskets , even put in 195* thermostat. So got the timing on TDC set at 6*BTDC (I even had the EST wire unplugged) ran like a champ !!! plugged up EST wire it went up about 12-16* in advance. So set all back again. And same thing. Still ran like poop. So once more ,well this time I did tune up , plugs ,wires,cap,button. Went to turn it over and it will not crank. I have spark, I have injectors coming on and spraying while cranking,I have power on fuel pump fuse as cranking, fuse on ecm has power, However there is NO POWER going to "CRANK" fuse. What the heck is this, and why doesn't it have power so before I start taking the fuse panel out I thought I would post and see if anyone had any possible answers or suggestions. Thanks
Thread Starter
Heel & Toe
Joined: Apr 2014
Posts: 22
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i did get power on that crank fuse only while cranking,which makes sense. Its kinda got me stumped. I have ALDL hooked up to it now I dont have sensor readings , If the ecm was shot would it still submit data?
Safety Car
Joined: Mar 2007
Posts: 3,652
Likes: 49
From: Bridgewater nj
I'm assuming we're talking about an 82 CFI right??? You're saying when you plug the brown wire to the distributor the motor runs ruff and dies? I would think your problem is in the distributor since the advance and dwell modules may have bad contact or just went bad? I guess the first step would be check for spark and work back.
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Thread Starter
Heel & Toe
Joined: Apr 2014
Posts: 22
Likes: 0
Yes I did check for spark. The battery does seem a little weak , would that make the spark weak also ? Yes? I will charge . Injectors are spraying as im trying to crank it. How can I test the module. seems like it is missing that something to get it fire up
Melting Slicks
Joined: Jul 2005
Posts: 2,740
Likes: 3
From: Aurora Ontario
Don't pull the fuse panel. Try changing the fuse(s). I've heard this has solved problems even when the fuse(s) looked good.
Jim
Melting Slicks
Joined: Jul 2005
Posts: 2,740
Likes: 3
From: Aurora Ontario
The wire is easy to miss, it will fall out when you take the coil out.
Le Mans Master
Joined: Feb 2011
Posts: 5,943
Likes: 61
From: Southern NH
if you had spark and lost it after the cap/rotor/plugs/wires, I think I would be reinspecting your installation of these parts, especially the installation of the coil and check the ignition module while your in there. you might have disturbed something
Melting Slicks
Joined: Jul 2005
Posts: 2,740
Likes: 3
From: Aurora Ontario
See picks in this link http://forums.classictrucks.com/70/9...-coil-failure/
The ground strap is the metal piece in one of the pictures. I keep calling it a wire but its more of a metal strap.
The ground strap is the metal piece in one of the pictures. I keep calling it a wire but its more of a metal strap.
Thread Starter
Heel & Toe
Joined: Apr 2014
Posts: 22
Likes: 0
didnt get the tshirt lol.. 1-8-4-3-6-5-7-2
I think ive looked at that like 8 x now I'm like??? So I did check the module ,wiring and reset the timing once again. I pulled out #7 Plug and gas came pouring out. Considering it isnt firing wouldn't gas seep thru to the piston?
I had it running strong , plugged up est wire ,ran like crap , stopped it reset timing and cant get it to crank to save my life
I think ive looked at that like 8 x now I'm like??? So I did check the module ,wiring and reset the timing once again. I pulled out #7 Plug and gas came pouring out. Considering it isnt firing wouldn't gas seep thru to the piston?
I had it running strong , plugged up est wire ,ran like crap , stopped it reset timing and cant get it to crank to save my life
Racer
Joined: Aug 1999
Posts: 355
Likes: 14
yikes! if gas poured out and you cranked, you have a bent rod now! (I hope not)
I am suspecting your valve timing. Can you confirm that #1 Top
Dead Center (TDC) compression stroke matches the distributor at #1 firing position (mechanically?)
I am suspecting your valve timing. Can you confirm that #1 Top
Dead Center (TDC) compression stroke matches the distributor at #1 firing position (mechanically?)
Thread Starter
Heel & Toe
Joined: Apr 2014
Posts: 22
Likes: 0
HMMM.. so when the est wire get plugged up the ecm tells the engine to advce the timing .correct? So if the bushing on the balancer is bad it can advance to Much right? Is the bushing bad if you are tdc and trying to achive the same result each time and the timing marks fluctuate from 8*btdc -4*atdc???