| Author | Topic |
|---|
Location:
Atlanta, Ga, USA
Registered:
March 2003
|
|
1jz problems, need help
|
Tue, 18 March 2003 05:15
|
 |
|
Here is the story symptoms. Car starts, idles with a little bit of a miss, but nothing huge, rev it up, at 3000ish rpm is kicks back like a fuel cut, wont rev past. To solve this problem we ran a jumper wire in the Diagnostic box from the fuel pump to the positive power terminal. Car revved all the way up, but it ran pretty rich, Anyway finally melted my catylitic converter, so we gutted it, now it ran REALLY rich, after about a week it became hard to start, one morning it flooded, fouled out the plugs, does that now almost all the time. I can drive it around on new plugs, but once i park it, the next morning its dead, and it will hit fuel cut at 3k still with the jumper wire removed. Pulled codes, most importantly it ran the Map sensor code and the front knock sensor, My car is NOT knocking so it must be the sensor, I replaced the Map with a Boost Pressure sensor from a 94 supra turbo, havnt done the knock just yet but they Map didnt really fix anything. Also the car changes its idle state after about 2 min, like cold start shuts off or something and it sounds different. The harness for the car was made by Mike Urbano here in the states, who has done a few of these swaps, If it makes a difference, He actually makes a 7mgte harness fit the 1jz engine. Can anyone help me, any idea?
|
|
|
Registered:
August 2002
|
|
Re: 1jz problems, need help
|
Tue, 18 March 2003 08:38
|
|
Im sure draven will tell you it sounds like its running in limp mode. Boost will also be retarded no doubt.
Are you running the auto ECU with auto gearbox?
|
|
|
Location:
Atlanta, Ga, USA
Registered:
March 2003
|
|
Re: 1jz problems, need help
|
Tue, 18 March 2003 14:01
|
|
|
No, its a manual with a manual ECU. The clip and the original car were both 5spd cars. What's Limp mode? Maybe something i know but you guys might call it something different, never heard that term.
|
|
|
Location:
UK
Registered:
May 2002
|
|
|
Location:
Atlanta, Ga, USA
Registered:
March 2003
|
|
Re: 1jz problems, need help
|
Tue, 18 March 2003 18:48
|
|
|
yah, i can tell you with the new Map and 440cc injectors, im 100% sure its not running lean, if you saw my post, its flooding its so rich.
|
|
|
Location:
UK
Registered:
May 2002
|
|
Re: 1jz problems, need help
|
Tue, 18 March 2003 19:39
|
|
|
sorry majik, didnt realise you were running the 440's as well.
|
|
|
Location:
Atlanta, Ga, USA
Registered:
March 2003
|
|
Re: 1jz problems, need help
|
Wed, 19 March 2003 02:07
|
|
|
c'mon any ideas? I really am at a stand still... is it possible the ECU is fried?
|
|
|
Registered:
August 2002
|
|
Re: 1jz problems, need help
|
Wed, 19 March 2003 06:10
|
|
'Limp home mode'
where something is wrong somewhere in the system and the ecu accounts for this by upping the fuel, dropping boost and fouling spark plugs!
have you run the ecu for any codes?
|
|
|
Location:
Atlanta, Ga, USA
Registered:
March 2003
|
|
Re: 1jz problems, need help
|
Wed, 19 March 2003 14:53
|
|
|
well the car is hitting the fuel cut in neutral, out of of gear, so its not a boost cut, with the jumper plugged in i can get the full 15 pounds my boost controller is set at. the only important codes were the map sensor and knock sensor, but i replaced both of those, and all the grounds and everythign are fine.
|
|
|
Location:
Atlanta, Ga, USA
Registered:
March 2003
|
|
Re: 1jz problems, need help
|
Wed, 19 March 2003 14:54
|
|
|
oh, and if it makes any difference, there are two relays under my dash that keep clicking.
|
|
|
Location:
UK
Registered:
May 2002
|
|
Re: 1jz problems, need help
|
Wed, 19 March 2003 23:04
|
|
|
clear your codes and check again.
|
|
|
