I have been driving my truck to school for a couple days now. the trip is all e-way, about 80 miles round trip.

I am haappy to report that my new cooling system is working really nice and i now have plenty of heat.

My complaint is that it seems like i need to put the go pedal at least half way to the floor to get the truck moving. i have trouble keeping up with traffic taking off from a street light. I have no trouble once up to speed though. Engine seems to rev just fine and have power but it seems to be having trouble puting that power to the ground.

I have noticed that when i put the pedal to the floor like i would to pass sombody i don't get nearly as much black smoke as i did before my cooling system repair. i did change my fuel filter when i had the filter bracket off while doing the rad. when i take off from a light i don't get the slight haze of black smoke like i used to.

Tomorrow after school i will check the setting on my TPS. i have no idea why it would change since i have not touched it, but ya never know.

My IP and injectors were replaced this past February/March. I did advance my timing about 2 dimes widths a couple months back and that made a big difference. Now though the engine noise seems noticably quieter. it seems smoother and not as rattley as it was before. it is definatley smoother on cold idle, it was pretty loud before.

The truck does not seem to really start moving until ~1300 rpm. It holds onto each gear until about 2700-2800 rpm then it shifts pretty quick and firm. when it shifts into O/D it kind of shakes in between the shift and has a really firm engagement. it is not as firm as when in limp mode though. the engine rpm also seems to kind of flare up a little right before a shift.


Sorry for the long post, but the truck is just no fun to drive the way it is. I don't know if it is tranny related, torque converter, TPS setting, or mabey i got a bad fuel filter.

Any ideas guys?

Thanks in advance.
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well you could change the filter again but i don't think the issue is related to that. the odd spikes in RPM between shifts and the shake going into overdrive leads me to believe it is torque converter related. im not a auto trans expert im a manual guy myself but i do have limited experience with the autos..... also when was the last time the fluid was changed in the trans and the filter? and has the fluid in the torque converter ever been changed to your knowledge? im fond of the 36,000 mile trans fluid change....

 

Does it take off ok if you manually put it in 1st gear, and upshift to 2 when necessary? If it's still lacking power its not likely electronics, and more likely mechanical. I'd guess converter too but I'm no tranny pro.

I would look into the timing, as two "dime widths" is a BIG change in timing. Also, you aren't looking to make the engine quiet, by any means. A properly timed IDI should have a very pronounced rattle when cold idle/cold timing advance is engaged, and a smoother sound when warm. When you mention it quieting down that raises some warning flags to me.

 

I have no idea when the tranny fluid or filter was changed. The PO had the tranny rebuilt about 2 years ago IIRC.

 

I will have to manually put it in 1st and see what happens. i have never done that before. i know that i shift it into 1st, then take off, and when i want to change i just simply move the shifter lever into 2nd?

 

yep, just throw it in "1", drive off, then bump it up to "2" at ~2200 RPM and see it that at least feels normal in terms of power.
You can then bump it to "D" and see if it shifts up or down from there.

 

well if you never changed it and the PO said it was "rebuilt" so it definantly should have been changed... but probably wasn't...... i would look into having it flushed and filter changed as well as for the torque converter it may not be the problem but its still supposed to be done.... id get it on a schedule with yourself to do it every 36,000

 

I checked my TPS setting and it has not changed and is right were i like it.

I tried manually shifting form 1 to 2 but did not go until ~2200 rpm. when i tried it earlier it was a real firm shift when i went from 1 to 2.

I looked at my air filter and it was a pretty dirty. i have a new one on the way from car quest. once i get that in i will try the manual shifting again.

it might be worth noting that when i shift from park to drive or reverse there is a delay of about 3 sec. it is even longer when the tranny is warm. i have been told that this is caused my a sticking boost vavle in the tranny.

 

yea i would say it is defiantly trans related now..... have you looked at the fluid? is it a dark red maroon color? smell worse than regular ATF?

 

level is good.

color is pink.

smell is the same as brand new stuff in the bottle.


It really wish i had a tranny temp gauge. i might look into one of those real soon.

 

hmmmm yea it would probably be a good idea. i think the E40D has ports in it you can use for the gauge so you don't even have to tap it..... someone else will have to chime in and confirm

 

Next up on the list of things is a tranny temp gauge.

 

Sorry to keep adding details as we go.

When i am cruising at pretty much any speed if i let off the throttle if traffic slows down, and then get back on the throttle quick there is a really firm torque converter engagement. if i ease back onto the throttle it is a nice and smooth engagement.


Again sorry for the details as we go. I promise this is thet last thing.

 

i am a member over on ob.net as well as here and i originally posted this over there.

Shortley after i became a member on this site i had a thread asking about how a torque converter works in an E4OD. I had described how my truck shifted and another member posted this.....

Quote:
<TABLE border=0 cellSpacing=0 cellPadding=6 width="100%"><TBODY><TR><TD style="BORDER-BOTTOM: 1px inset; BORDER-LEFT: 1px inset; BORDER-TOP: 1px inset; BORDER-RIGHT: 1px inset" class=alt2>Originally Posted by benton
my trans use to shift like that to but it didnt seem to build up speed that quick i think my converter was slippin like hell!

</TD></TR></TBODY></TABLE>
Well now this quote describes my issue 100% spot on right now. when benton said that he thought his converter was slipping, what is meant by that and how can i tell if mine is slipping?


Here is the link to the thread that this quote is from.....
School Me on the workings of the torque converter in an E4OD - Oilburners.net