5th Gear... uh.... studder....

[SASHO91]

.... thats the best i can give....
i was heading home last night, and went to pass someone, while in 5th, and i get a really quick studder... another way to describe it would be if the clutch was slipping for a short(a tenth of a second at a time)time and catching... but a third gear pull, (as well as 1st and 2nd) said other wise.... Thats what first poped into my head... but repating the studder(going about 1/2 throttle in 5th, @70-75mph) kept me thinking it may be spark/fuel delivery...

To almost rule out the possiblity of it being the clutch, I slipped the clutch off the line, and pulled to 40... then stopped again, and launched the car... no slippage... ( i know i slipped the clutch.. i know what that smells like.. )

So, could the problem be in the A/F department? OR the Spark store... ?

i pulled an all nighter... and dont want to search this morning... zzzzz zzzzz

TIA.

 

[projectSHO89]

I'd suspect a spark-related misfire.

Steve

 

[SASHO91]

I guess i'll try to throw some new plugs in... not too sure on miles on these plugs... and i have a couple sets just laying there.. been procrastinating(see below)

by try i mean... i cant get the old ones out.... tips?? Liquid wrench down on the plug and let set?

 

[twr]

I'd suspect a spark-related misfire.

Steve

Exactly my thought. I've experienced the same thing before, was a bad plug wire.

 

[SASHO91]

i guess i should start with wires first then?
Could the coil pack also be held liable for the syptoms?

 

[twr]

i guess i should start with wires first then?
Could the coil pack also be held liable for the syptoms?

Not generally, Either wires or plugs, the spark is looking for the path of least resistance.

 

[DHMag]

that was the problem i was having with the car when i sold it to you. i mentioned this to you at that time. its a misfire. plugs were changed right before you bought it, wires have been on there for a couple years.

 

[SHOblime]

What RPM were you at and how much gas did you give it? Sometimes it's better to drop a gear (not trying to be a dick here) and give it a *little* gas..that fifth is an overdrive, it's for economy, not passing people at 75mph

 

[SASHO91]

well, it was a miss... and got worse as the day went by. So i swapped out the NGK's, for some bosch supers.. and swapped wires... all is well now.

Dale, that problem was the DIS. I swapped it out... that fixed that.. this was plug/wire oriented...

 

[SHOtimer]

well, it was a miss... and got worse as the day went by. So i swapped out the NGK's, for some bosch supers.. and swapped wires... all is well now.

Dale, that problem was the DIS. I swapped it out... that fixed that.. this was plug/wire oriented...

The Bosch supers arn't gonna last very long.

Doug

 

[SASHO91]

eh.. i've got a few sets....

what else should i run? The plugs i were running are discontinued... the double plats.
what do NGK's run?

 

[SASHO91]

What RPM were you at and how much gas did you give it? Sometimes it's better to drop a gear (not trying to be a dick here) and give it a *little* gas..that fifth is an overdrive, it's for economy, not passing people at 75mph

yes, i know.. I wasnt lugging the motor..
2800.. and maybe 1/2 throttle. but thats on level highway... i wont do it going up hills, or the like..

 

[DHMag]

The Bosch supers arn't gonna last very long.

Doug

they lasted longer in that car WAY longer than Motorcraft 32PPs.