Auto Problems

[linedup33]

i recently just fitted a news transmission into my car. but now when i put it into drive it feels like it goes straight into 4th gear..the workshop who fitted it sed to go to a autotrans specialist to get it checked..ill have to take it next weekend as i wont have time this weekend.

has this happened to anyone else? n does anyone know what could be wrong? n how to fix it?

any help would be awesome.

thanks heaps in advance

[lanky71]

Sounds like it is going into limp mode if 33's do that?? Basically the ecu is saying there is something wrong and to protect itself it is restricting revs which makes you feel like you are in fourth gear. My car was doing this before but mine is a 34 but it stuck in 3rd, my speed sensor was had it.

Mind you i'm no expect on 33's but thats what it sounds like to me.

[linedup33]

thanks for that dude..but do u mean the ecu is saying something is wrong?

how did u fix urs?

[lanky71]

thanks for that dude..but do u mean the ecu is saying something is wrong?

how did u fix urs?

Yeah the ecu is saying there is something wrong with one of the crucial parts of the car so to protect itself it limits the car.

I replaced my speed sensor and it fixed it, but seeing that you just had a new transmission put in I would be seeing if you can get a hold of a Nissan Diagnostic tool and read the ecu fault codes. That should tell you what the problem is, but more then likely something with the new auto box, i find it weird that the place that installed it is now sending you onto to another place.... Was it working when you first picked the car up from them?

[linedup33]

i was there wen they finished fitting it, n they told me to take it for a drive, i reversed out n then put it in drive n it stalled, i went and got the guy, he jump started the car and then took it for a drive..he sed its just going to straight into 4th gear n that he couldnt fix it...had soo much trouble with this workshop - pm me if u wana know which one

is there anything else i could possible check in the meantime?

[dangerman4]

i was there wen they finished fitting it, n they told me to take it for a drive, i reversed out n then put it in drive n it stalled, i went and got the guy, he jump started the car and then took it for a drive..he sed its just going to straight into 4th gear n that he couldnt fix it...had soo much trouble with this workshop - pm me if u wana know which one

is there anything else i could possible check in the meantime?

behind your drivers side head light there are 3 wiring loom plugs.

unplug the brown one and spray some contact cleaner in there.

then plug it back in.

this plug if unplugged, or not connected well, will lock your car in 3rd = drive

[linedup33]

thanks mate - will try wen the sun goes down, n let u no how it goes

[silversr33]

thanks mate - will try wen the sun goes down, n let u no how it goes

After removing the transmission and installing a new one, they would reset the ECU obviously right?

If this is a non-standard transmission then to me it sounds like an interface issue between the ECU not liking the new box or the box not receiving the ECU's gear change commands and the ECU panicking.

If that was in fact the case, and I'm NOT any kind of expert, I would talk to someone experienced with skylines (as opposed to someone experienced with gearboxes) about how the ECU works in an auto and what piggyback solutions might solve it.

[linedup33]

good thinking mate...ill reset the ecu n see if that helps

the place i went to seemed to know everything when they wanted my business but wen it was finally finished they didnt wana know anything - biggest f**heads ever, reli wasted my time

[linedup33]

hey would reseting the ecu affect my safc2 or avcr settings?

[linedup33]

i went to an auto trans place today they recommened me to go to an auto electrian..does anyone know a good one in melb s.e area?

[mattookus]

m8 wat u need 2 do is turn ignition on put foot on brake and go down 2 1st gear then bak 2 park that resets computer 4 ur auto

[turboedsloth]

or disconnecting the battery for 5 minutes also resets it. doubt it'l hurt your safc

[linedup33]

hey still no luck - i reset the ecu but still the same thing is happening

[linedup33]

anyone - any help at all b4 i got to an auto electrician

[turboedsloth]

find a decent mechanic who has a diagnostic tester and get them to hook it up. any proper transmission builder should have one. plug it in, check for codes, easy as

Edited December 13, 2007 by turboedsloth

[linedup33]

ive got one - wat codes should i look for? i havnt used it yet.

[linedup33]

i used the consult plug but nuttin came up about the auto

wat else could help me figure out wats going on with it?

most places are closed, so ill have to wait awhile to take it anywere.

[R31_Rob]

If it was as simple as trans out, new trans in, it sounds like one of the plugs has not been connected correctly, but if you have had a shift kit or something else fiited you may have some problems.

If you have a multimeter check that there is 12volts going to some of the plugs,

Also try starting the car in gear and let us know the results?

[linedup33]

ye it was a straight swap...wen i first take off in drive its all good, it goes 1st 2nd 3rd, but then wen i stop n go again it goes straight into 3rd