|
|
|
|
Joined: May 2003
Posts: 29
New CEG\'er
|
OP
New CEG\'er
Joined: May 2003
Posts: 29 |
Started out as engine stumbling under heavy load (WOT) at lower RPMS, such as going up hills. Just yesterday it started running like this all the time, regardless of load or RPMs. No CEL. Got fairly new plugs, fuel & air filters (stock). After searching the forums I tried disconnecting the MAF - didn't help. TB is clean. Secondaries are opening alright.  Any suggestions as to what could be causing this?
************************
'95 Contour SE V6-MTX.
|
|
|
|
|
Joined: Jun 2005
Posts: 5,345
Addicted CEG\'er
|
|
Addicted CEG\'er
Joined: Jun 2005
Posts: 5,345 |
Originally posted by Nathan:
Started out as engine stumbling under heavy load (WOT) at lower RPMS, such as going up hills. Just yesterday it started running like this all the time, regardless of load or RPMs.
No CEL. Got fairly new plugs, fuel & air filters (stock). After searching the forums I tried disconnecting the MAF - didn't help. ...Secondaries are opening alright.
Clean IAC, MAF. Check battery, alternator, O2 sensor, spark plug wires, fuel pump, vacuum leaks.
Edit. And scan for CELs eventhough it is not lighted. And how "new" are the plugs, air and fuel filters? Also test for plugged exhaust by removing O2 sensor.
Last edited by Tony2005; 09/18/05 01:50 AM.
"Always do the cheap and easy ones first."
1996 V6 ATX 96K miles
|
|
|
|
|
Joined: May 2003
Posts: 29
New CEG\'er
|
|
OP
New CEG\'er
Joined: May 2003
Posts: 29 |
Originally posted by Tony2005:
Originally posted by Nathan:
Started out as engine stumbling under heavy load (WOT) at lower RPMS, such as going up hills. Just yesterday it started running like this all the time, regardless of load or RPMs.
No CEL. Got fairly new plugs, fuel & air filters (stock). After searching the forums I tried disconnecting the MAF - didn't help. ...Secondaries are opening alright.
Clean IAC, MAF. Check battery, alternator, O2 sensor, spark plug wires, fuel pump, vacuum leaks.
Edit. And scan for CELs eventhough it is not lighted. And how "new" are the plugs, air and fuel filters? Also test for plugged exhaust by removing O2 sensor.
Thanks for the suggestions. After inspecting the wires I found a cracked boot. The wires were original with 200k (kilometers) on them. I replaced them (Motorcraft) and it sure runs well now - MUCH more torque.
I checked CELs - no codes. Plugs & fuel filter are a couple months. Air filter is a year.
P.S. Based on a post here I gapped the plugs down to .44 from .56 (prior to discovering the wire were bad. Should I put them back to .56? Would I see any difference in performance?
************************
'95 Contour SE V6-MTX.
|
|
|
|
|
Joined: Jun 2005
Posts: 5,345
Addicted CEG\'er
|
|
Addicted CEG\'er
Joined: Jun 2005
Posts: 5,345 |
Originally posted by Nathan:
.....Based on a post here I gapped the plugs down to .44 from .56 (prior to discovering the wire were bad. Should I put them back to .56? Would I see any difference in performance?
The gap is supposed to 0.054 inch. And the Contours are very sensitive spark plug gap. I would suggest getting it back to 0.054.
"Always do the cheap and easy ones first."
1996 V6 ATX 96K miles
|
|
|
|
|
|
|
