Lean Misfires at 2700-2800 rpm - Page 75 - 3000GT/Stealth International Message Center

badass3000 · 04-29-2008, 07:40 PM

Quote:

Originally Posted by 3000hybrid

...Does anyone you know have a spare PTU for you to try in your area? It only takes a few minutes to swap out.

I tried my friends PTU, and his car runs fine.

10CentGT · 04-30-2008, 12:16 AM

I was having this problem and after hours and hours of testing, frustration, and pondering what could be the cause of this problem it came down to be just some freaking cheap spark plug wires I bought from ebay. I bought some OEM wires today from the dealership and the car runs like champ. Men...what a relief!!

brkdncr · 04-30-2008, 10:02 AM

I'm having the same symptoms. 1991 VR4. horrible hesitation between 2k and 3k. Hard start. Car runs OK when fully warmed. Getting CEL for volume air sensor and coolant temp sensor, which have both been swapped with known working ones.

FSRMotorsports has swapped and tested all sensors and ignition items so far, although the wires may have been overlooked. I'm swapping in a known working used pair tonight and will report back tomorrow.

I'm looking for a working ECU to test in my car, and will be bypassing ECU<->sensor wires this weekend.

badass3000 · 04-30-2008, 03:09 PM

your not having the same problem if your getting CELs.

3000hybrid · 04-30-2008, 03:19 PM

Quote:

Originally Posted by badass3000

I tried my friends PTU, and his car runs fine.

Mann, that sucks. My car is fine now. I think I read that you have new coils and PTU right? This is crazy to have the same problems with differant fixes. Have you slaved in another ECU?

badass3000 · 05-04-2008, 01:15 PM

I made a new video of what I think the problem is...
the audio is the most important thing.

Mike1992 · 05-04-2008, 06:02 PM

You think thats bad? Listen to mine....

3000hybrid · 05-05-2008, 06:25 PM

Quote:

Originally Posted by Mike1992

You think thats bad? Listen to mine....

I would check for a major exhaust leak, loose hangar, or motor mount causing the exhaust to hit on something. It sounds like the car is idleing pretty good.

Badass- What do you think is it? It definately dosen't sound like a PTU will fix that noise. Speculation--- collapsed lifter??? how is your compression?

DoctorDex- For what it's worth. I have my other 93 ECU. If you can use it I'll send it out to ya for troubleshooting.

markoverclock · 05-05-2008, 06:48 PM

your car has an engine miss. you need to figure out if its wires or plugs, coil pack or ptu.

Quote:

Originally Posted by Mike1992

You think thats bad? Listen to mine....

04-30-2008, 12:16 AM	#742 (permalink)
10CentGT I ♥ JDM Hoes Too! Join Date: Aug 2007 Trader Rating: (3)	Re: Lean Misfires at 2700-2800 rpm I was having this problem and after hours and hours of testing, frustration, and pondering what could be the cause of this problem it came down to be just some freaking cheap spark plug wires I bought from ebay. I bought some OEM wires today from the dealership and the car runs like champ. Men...what a relief!! __________________ "The secret to creativity is knowing how to hide your sources."--- Albert Einstein

04-30-2008, 10:02 AM	#743 (permalink)
brkdncr New User - Please be kind Join Date: Dec 2004 Trader Rating: (0)	Re: Lean Misfires at 2700-2800 rpm I'm having the same symptoms. 1991 VR4. horrible hesitation between 2k and 3k. Hard start. Car runs OK when fully warmed. Getting CEL for volume air sensor and coolant temp sensor, which have both been swapped with known working ones. FSRMotorsports has swapped and tested all sensors and ignition items so far, although the wires may have been overlooked. I'm swapping in a known working used pair tonight and will report back tomorrow. I'm looking for a working ECU to test in my car, and will be bypassing ECU<->sensor wires this weekend.

04-30-2008, 03:09 PM	#744 (permalink)
badass3000 Wanted: Traction Problems Join Date: Nov 2002 Location: Jacksonville, Fl Drives: 18 Y.O. "badass" VR4 Trader Rating: (18)	Re: Lean Misfires at 2700-2800 rpm your not having the same problem if your getting CELs.

05-04-2008, 01:15 PM	#746 (permalink)
badass3000 Wanted: Traction Problems Join Date: Nov 2002 Location: Jacksonville, Fl Drives: 18 Y.O. "badass" VR4 Trader Rating: (18)	Re: Lean Misfires at 2700-2800 rpm I made a new video of what I think the problem is... the audio is the most important thing.

Sponsored Links
3000GT/Stealth International Message Center Advertisement