am trying to reset my fuel trims. i am having some major issues with power.

did the key off, hold odo button key one. test comes up on odo , turn off. then repeat.

does not work, ltft still the same.

any ideas, i am wondering if i am having an ecu issue.

thanks

beers

 

Un-connect the battery and step on the brake pedall a few times.

 

yea,
saw that. will give it a shot.

beers

 

Yea disconnect the battery. I have never seen a car where holding the trip button did more than just diagnostics, thus I think the whole "reset the computer by holding the trip button" is just a myth.

 

thanks guys.

it worked i just wonder why the other way does not. i am having some weird problems that i am trying to get sorted.

nemesis, are you running a scanlizer????

and nice job on the website..

beers

 

Try taking out the top 10Amp fuse in the front fusebox, marked ECU.

Haven't tried it myself, but should work.....

S

 

like that idea better. i just dont want there to be a next time.

beers

 

Did it help with your power issues?

 

WTF, you don't own a scanner yet?????

 

Yep Scanalyser v1.0 and Beta v1.1 and the USB CANScan

 

do me a favor next time you are out running around town in the rain... maybe a little stop and go and some highway. could you let me know what the h20 temps run.

also as a 70 mph cruise what the maf reads ~.

btw. the beta 2.1 i think it is allows 9 gauges.

beers

 

Yep - on my way in to the office on Monday I can do it. Rain is in the forcast.

 

thx, and what are the odds on the rain thing. you alway have a place to stay in sunny fla. it did rain last night for a couple of hours. first in about 6 weeks.

beers

 

60%

Do you want me to create the same screen guages you have there?

 

naw,
just need the two...

beers

 

Looks like coolant was 179F cruising at 70 MPH. Temps swing to 184F in town, and hit 208F before the thing started cooling down. Outside temp was 60F and inlet air temp was 68F. As for the MAF reading at almost 70 MPH on cruise control, looks like 38.62 grams/sec.

 

excellent. thanks that what i needed.

beers

 

Wow, your cars run hot.
Even after fairly "spirited" driving at +80°F ambient temps, my water temps seldom get over 195°F.

 

Yep - scares the hell out of me. I'm ready to change something.

 

really?????

this is the info i need... mm? how high have you seen your temps?????

nem? have you had any problems with sudden power loss???

beers

 

and mm

this has something to do with the ltft ? i have asked you in the past.

beers

 

No power loss at all - chirps tires in 2nd and 3rd. My LTFT is 5.5% right now. It pretty much stays right there.

 

pm

beers

 

I've hit 210° or so if I idle for long periods of time at ambients over 90°.
You can see 225° or higher and still be alright since the coolant pressure is so high.
You just aren't making peak power and are closer to the knock point.

LTFT probably won't be affected much by your coolant temp, though it might figure into the temp control strategy. I dunno.