HondaGuy
Posts: 1101
Joined: 3/15/2008
From: Onancock, VA, USA
Status: offline
|
Coolant temp sensor, and also they had big problems with the dist caps, rotors and even the distributors themselves in those motors. There is a bulliten for a random misfire and poor driveability on the 4.3, 5.0, 5.7, and I think even the 7.4s that says basically to replace the dist cap, rotor, and inspect the dist base for a pair of small screens that are in the vent holes, if the screens are still in place then you need to take them out, and also to sheild or insulate the a/c hose that runs over the dist. If the missfire did not go away then you needed to replace the dist. What was happening was dust, dirt, and corrosion was clogging up those screens and causing condensation to stay in the distributor and cause carbon traking in the cap and rotor, this problem was intensified on the 4.3 trucks because there is an a/c hose that runs right over top of the dist cap and can drip onto the cap causing even more corrosion. If it got bad enough then it could also cause the dist itself to be ruined. I have replaced too many distributors to count but haven't done one in a while I kinda got the feeling maybe they had all been replaced already lol. If you don't see any signs of corrosion in the base of the distributor then I would for sure check the fuel psi, they also had MAJOR issues with the fuel sender modules (pump and level sensor assy) in these trucks as well. Being a 4.3 you still have a Injector Spider assy in the intake plenum that is known for leaking fuel psi regulators, and also the injectors themselves going bad that is another possibility. I am thinking maybe when you are unplugging the tps it is going into a "base mode" or a "limp mode" which could explain why that has something to do with the way it runs.
< Message edited by HondaGuy -- 8/29/2008 5:56:12 PM >
_____________________________
I thought I was wrong once, but I was mistaken.
2008 Honda Rancher ES 4x4 black
Supertrapp Mudslinger
HL EPI Clutch Kit
Relocated Radiator
Permacool 8" electric fan (covers the whole radiator)
12x7 ITP C Series Type 5 wheels
27in Bi/Tri Claw Magnum combo
Viper Max 3000lb winch Red Amsteel rope
Mud guard fender flares A-arm skid plates
88 Yamaha Banshee red and grey
stockish
21" Mud Sharks
http://www.myspace.com/kotakid287
|
Inbox 
Printable Version
4.3 Problem - 
New Messages
No New Messages
Hot Topic w/ New Messages
Hot Topic w/o New Messages
Locked w/ New Messages
Locked w/o New Messages
Post New Thread
