Cuts out under acceleration - 3000GT/Stealth International Message Center
3000GT/Stealth International 3000GT/Stealth International
 

Auto Insurance

» Featured Product
Wheel & Tire Center

Go Back   3000GT/Stealth International Message Center > Modifications and Technical Support > Engine - Turbo

3SI.org is the premier Mitsubishi 3000GT Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools
Old 05-21-2010, 01:17 AM   #1 (permalink)
Big Blue
 
2fast4usteeley's Avatar
 
Join Date: Aug 2009
Location: Coeurdalene, Idaho
Drives: 91' 3000gt vr4(fiji)
2fast4usteeley is an unknown quantity at this point
Feedback Score: 8 reviews
Default Cuts out under acceleration

ok i have a 1991 Mitsubishi 3000gt vr4, i just took it out for a drive tonight and it cuts out under throttle and it wont rev above 2700 rpm's, idles fine sounds like its miss firing though. could be the spark plugs, ill have to investigate the track opens tomorrow evening and i will have to figure it out before then, but if you guys have any thoughts then don't be afraid to jump in and say something thanks!!!
2fast4usteeley is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 05-21-2010, 01:21 AM   #2 (permalink)
Slow Learner
 
x2xtreme360's Avatar
 
Join Date: Mar 2007
Location: Cazenovia, NY
Drives: Like a German
x2xtreme360 Level 1x2xtreme360 Level 1x2xtreme360 Level 1
Feedback Score: 17 reviews
Default Re: Cuts out under acceleration

Cuts out as in fuel cut? Or like a bad misfire? How about if you just slowly rev the car in neutral? You could be having some serious spark blow out. I would check your gap.
__________________

Vacuum reduction, Powdercoated misc, cruise relocate, Evo9 BOV, Custom catch cans, Russell fuel filter, SS braided fuel lines, High flow fuel loop, Autogage fuel gauge, Catless DP, DNP Y-pipe, Fuel pump hotwire.

FS/FT: 94 3000GT base $3k
x2xtreme360 is offline   Reply With Quote Quick reply to this message
Old 05-21-2010, 01:45 AM   #3 (permalink)
Big Blue
 
2fast4usteeley's Avatar
 
Join Date: Aug 2009
Location: Coeurdalene, Idaho
Drives: 91' 3000gt vr4(fiji)
2fast4usteeley is an unknown quantity at this point
Feedback Score: 8 reviews
Default Re: Cuts out under acceleration

ok so pulled the front 3 plugs and they look new and im pretty sure the gap is 44 thousandths anyone care to correct me if im wrong
2fast4usteeley is offline   Reply With Quote Quick reply to this message
Old 05-21-2010, 01:51 AM   #4 (permalink)
Slow Learner
 
x2xtreme360's Avatar
 
Join Date: Mar 2007
Location: Cazenovia, NY
Drives: Like a German
x2xtreme360 Level 1x2xtreme360 Level 1x2xtreme360 Level 1
Feedback Score: 17 reviews
Default Re: Cuts out under acceleration

Quote:
Originally Posted by 2fast4usteeley View Post
ok so pulled the front 3 plugs and they look new and im pretty sure the gap is 44 thousandths anyone care to correct me if im wrong
That's about right. Stock gap is anywhere between 0.039 and 0.043 in. You could try to decrease the gap and see if that helps any.
x2xtreme360 is offline   Reply With Quote Quick reply to this message
Old 05-21-2010, 01:55 AM   #5 (permalink)
Big Blue
 
2fast4usteeley's Avatar
 
Join Date: Aug 2009
Location: Coeurdalene, Idaho
Drives: 91' 3000gt vr4(fiji)
2fast4usteeley is an unknown quantity at this point
Feedback Score: 8 reviews
Default Re: Cuts out under acceleration

nevermind getting the gap mixed up with my honda but close, there gapped at 40 thousandths which is within the spec according to my factory service manual
2fast4usteeley is offline   Reply With Quote Quick reply to this message
Old 05-21-2010, 01:56 AM   #6 (permalink)
Big Blue
 
2fast4usteeley's Avatar
 
Join Date: Aug 2009
Location: Coeurdalene, Idaho
Drives: 91' 3000gt vr4(fiji)
2fast4usteeley is an unknown quantity at this point
Feedback Score: 8 reviews
Default Re: Cuts out under acceleration

and they look like new plugs (NGK) but i havent looked at the back ones yet cus i dont want to pull the intake manifold but its not a big job. could it be a dirty mas air flow or tps sensor? i have one vacume line not hooked up off my intake up near the throttle body, wasnt sure what it went to but it ran fine with out it for 1 week without it. its just a bi*^h to plug in
2fast4usteeley is offline   Reply With Quote Quick reply to this message
Old 05-21-2010, 02:53 AM   #7 (permalink)
Forum Member
 
emaz's Avatar
 
Join Date: Apr 2010
Location: Buffalo, NY
Drives: 92 VR-4, 98 A4 2.8
emaz is an unknown quantity at this point
Feedback Score: 0 reviews
Default Re: Cuts out under acceleration

hmm, uneducated guess but it doesn't sound like misfiring to me. Sounds more like it's not getting enough air, or fuel. I wouldn't go changing the plugs just yet.

I just got my 92 vr4, which is my first turbo car. Sometimes it would stall out when I started it, and it would also kind of "choke" when giving it gas, mostly during the first few minutes of driving it. I found out about this "coking" of hot fluids, realized that these things mostly happened when it was warm and I was driving it hard. Now if I do, I let it idle for a couple minutes before shutting it off... poor man's turbo timer. No more problems.

If it's "misfiring", as i could have easily been convinced mine was doing, there are many other possible reasons than plugs.
emaz is offline   Reply With Quote Quick reply to this message
Old 05-21-2010, 09:09 AM   #8 (permalink)
Big Blue
 
2fast4usteeley's Avatar
 
Join Date: Aug 2009
Location: Coeurdalene, Idaho
Drives: 91' 3000gt vr4(fiji)
2fast4usteeley is an unknown quantity at this point
Feedback Score: 8 reviews
Default Re: Cuts out under acceleration

so i drove it again last night i could take it just up into boost range and then it would start cutting out, im pretty sure its not a boost leak and i hooked up that one vaccume line i was talking about, but i would just start to drive it and then at about 2000-3000 rpm it just bogs out and "gallops" but in eutral or with the clutch disengaged i can rev it as high as i want to. all the fluids are good too!
2fast4usteeley is offline   Reply With Quote Quick reply to this message
Old 05-21-2010, 09:42 AM   #9 (permalink)
Big Blue
 
2fast4usteeley's Avatar
 
Join Date: Aug 2009
Location: Coeurdalene, Idaho
Drives: 91' 3000gt vr4(fiji)
2fast4usteeley is an unknown quantity at this point
Feedback Score: 8 reviews
Default Re: Cuts out under acceleration

BUMP...... the track open tonight and if anyone has any ideas feel free to give me them
2fast4usteeley is offline   Reply With Quote Quick reply to this message
Old 05-21-2010, 02:18 PM   #10 (permalink)
Big Blue
 
2fast4usteeley's Avatar
 
Join Date: Aug 2009
Location: Coeurdalene, Idaho
Drives: 91' 3000gt vr4(fiji)
2fast4usteeley is an unknown quantity at this point
Feedback Score: 8 reviews
Default Re: Cuts out under acceleration

ok guys thanks for all the help but i figured it out its a bad maf sensor, good thing my parts car has one
2fast4usteeley is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

  3000GT/Stealth International Message Center > Modifications and Technical Support > Engine - Turbo

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the 3000GT/Stealth International Message Center forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Free email addresses do not work(yahoo, hotmail, gmail,...)
We are currently being blocked by AOL so any AOL based address may not work(aol.com, aim.com, netscape.net, cs.com)
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On


Powered by vBadvanced CMPS v3.2.2

All times are GMT -5. The time now is 11:00 PM.




Garage Plus vBulletin Plugins by Drive Thru Online, Inc.

Search Engine Optimization by vBSEO 3.3.2