Aerostar electrical problem unsolved
Thread Starter
|
New User
Joined: Jul 2006
Posts: 2
Likes: 0
Aerostar electrical problem unsolved
Hi...I have a 93 Ford Aerostar v6 3.0L. Last winter , I think it was the second week of january, it was raining a lot, enough to be carefull on the road because of the accumulation of water. Anyway at some point I could'nt stop because the other cars where to close behind me and I had to pass thru 4 or 5 inches of water. the next day it was 15 below zero and everything had frozen and what a mess it was. Then the problem begin...I start it and after maybe 10 seconds the ENGINE LIGHT FLASHES three time and then the RPM goes up for 5 second and then down maybe 250 rpm and run in an eratic maner like up and down. It was tested with a code reader and the results were inconclusive since no anomalies were found on the first test and on the second test there were connection errors and a bunch of other error codes.
This problem persist even today when it rain for two or three days non stop.
So I just hope that maybe someone somewhere , has been able to solve this or knows about the meaning of the three engine light flash because in the repair manual, they don't speak about it.
Thanks...Jossdomain
This problem persist even today when it rain for two or three days non stop.
So I just hope that maybe someone somewhere , has been able to solve this or knows about the meaning of the three engine light flash because in the repair manual, they don't speak about it.
Thanks...Jossdomain
….
Post Fiend
Joined: Oct 2005
Posts: 5,242
Likes: 0
From: Kiev, Ukraine
Joss!
This is the tipical problem of aeros. When you pass thru 4 or 5 inches of water fan blades contact water and water is everywhere... on coils, spark plugs, wires, hareness, connectors, sensors... Frozen water destroys them...
How to avoid it is the second quatiopn... The first - how to find a problem!
Usually there are no codes if PIP signal is not good ore you have problem with ignition
This is the tipical problem of aeros. When you pass thru 4 or 5 inches of water fan blades contact water and water is everywhere... on coils, spark plugs, wires, hareness, connectors, sensors... Frozen water destroys them...
How to avoid it is the second quatiopn... The first - how to find a problem!
Usually there are no codes if PIP signal is not good ore you have problem with ignition
Post Fiend
Joined: Apr 2005
Posts: 5,720
Likes: 5
From: Washington state
welcome joss to Aero FTE
sounds like ECU/PCM is switching into failsafe limp home mode aka Hardware Limited Operation Strategy (HLOS) mode due to sensor input failure, probably multiple due to connector corrosion....
take ECU connector off...examine for corrosion on pins and in sockets......clean with spray electrical cleaner....coat with dielectric grease (spark plug boot) type.....
do the same on all sensor electrical connections
start will O2 sensor, MAF and ECT sensor which are the most exposed culprits to corrosion spray
good luck
sounds like ECU/PCM is switching into failsafe limp home mode aka Hardware Limited Operation Strategy (HLOS) mode due to sensor input failure, probably multiple due to connector corrosion....
take ECU connector off...examine for corrosion on pins and in sockets......clean with spray electrical cleaner....coat with dielectric grease (spark plug boot) type.....
do the same on all sensor electrical connections
start will O2 sensor, MAF and ECT sensor which are the most exposed culprits to corrosion spray
good luck
Last edited by 96_4wdr; Jul 11, 2006 at 01:25 PM.
Thread Starter
|
New User
Joined: Jul 2006
Posts: 2
Likes: 0
Thank you Pablo-UA and 96_4wdr .
In this case, cleaning all the connectors is the only thing to do since in good weather condition, everything works perfectly meaning that the sensors are not defective otherwise it would be a permanent condition.
Thanks Again...Joss
In this case, cleaning all the connectors is the only thing to do since in good weather condition, everything works perfectly meaning that the sensors are not defective otherwise it would be a permanent condition.
Thanks Again...Joss
New User
Joined: Aug 2006
Posts: 8
Likes: 0
Suunds Like To Me That Your Diagnostic Controller Still Thinks Its Running A Test, Did You Check Your Codes With A Jumper Wire, The Reving Up And Down Maybe An Idle Air Control Stickin And Maybe Your Motor Is Starving Air
Thread
Thread Starter
Forum
Replies
Last Post
scott_pelletier
Clutch, Transmission, Differential, Axle & Transfer Case
2
Jun 14, 2009 01:54 PM
