300ZX (Z32) Performance / Technical Discussions related to Turbo charging, Supercharging, Engine, ECU, exhaust, and etc. performance enhancements and Techical related.

new problem

Thread Tools
 
Search this Thread
 
Old Feb 13, 2005 | 08:28 PM
  #1  
allmotor300z's Avatar
Thread Starter
Registered User
 
Joined: Jan 2005
Posts: 44
From: pembroke pines, FL
new problem

after i adjusted my timing on my car beacuse of my ticking valves it worked ok for a couple of days an then somtimes my car wouldnt start so i had to push start it no when i barley tap the gas instead of the rpm's going up they drop down briefly what could this be?
Old Feb 14, 2005 | 06:12 AM
  #2  
CanyonCarver's Avatar
Jack Of All Trades
 
Joined: Jun 2004
Posts: 2,296
From: Acton, California
We should assume that your "ticking valves" was actually detonation since you figured that adjusting your timing would fix the problem?

If your engine bogs or wants to die when you press on the gas, the first things to check for would be vaccum leaks and/or your timing being way off.
Old Feb 14, 2005 | 07:51 AM
  #3  
Zgringo's Avatar
El Viejo
 
Joined: Jan 2005
Posts: 204
From: San Felipe, Mexico
Right on CC. Sounds like someone has been doing some adjusting and not getting it to factory specs.
Old Feb 17, 2005 | 05:35 AM
  #4  
allmotor300z's Avatar
Thread Starter
Registered User
 
Joined: Jan 2005
Posts: 44
From: pembroke pines, FL
no i have the timing at factory specs but sometimes it just wont satret and the i will run the codes on the ecu and it will say 34 dentiotnation sensor then it wil go away to 55 system ok so cant figure out the problem
Old Feb 17, 2005 | 06:25 AM
  #5  
CanyonCarver's Avatar
Jack Of All Trades
 
Joined: Jun 2004
Posts: 2,296
From: Acton, California
Sounds like a intermittent problem ....... Have you cleaned all of your electrical connections in that area? Verified that there are no loose connections? maybe do a continuity check on the wires. The copper inside can break down even when the outside looks o,k.
Old Feb 17, 2005 | 07:56 PM
  #6  
91zxtt's Avatar
Registered User
 
Joined: Nov 2003
Posts: 3,672
From: Gerber, CA
Cross your fingers that it's not the detonation sensor. That's not fun to replace.
Old Mar 22, 2005 | 09:47 PM
  #7  
RuZZeLL's Avatar
Registered User
 
Joined: Feb 2005
Posts: 23
From: Granada Hills, CA
Originally Posted by CanyonCarver
Sounds like a intermittent problem ....... Have you cleaned all of your electrical connections in that area? Verified that there are no loose connections? maybe do a continuity check on the wires. The copper inside can break down even when the outside looks o,k.

When I replaced my fuel injector plugs the wires were a little green on the inside, even way inside the wiring harness. Is that consistent with the wire breaking down? I hope I don't need the full $350 EFI harness. I could test the resistance from each end of the wire, huh...?

Old Mar 23, 2005 | 06:09 AM
  #8  
CanyonCarver's Avatar
Jack Of All Trades
 
Joined: Jun 2004
Posts: 2,296
From: Acton, California
Originally Posted by RuZZeLL
When I replaced my fuel injector plugs the wires were a little green on the inside, even way inside the wiring harness. Is that consistent with the wire breaking down?
Yes

Originally Posted by RuZZeLL
.....I could test the resistance from each end of the wire, huh...?
Yes

You could even replace individual wires if you chose too, as opposed to buying a new harness
Old Mar 23, 2005 | 07:09 PM
  #9  
WhtFairLadyZ's Avatar
Registered User
 
Joined: Jul 2003
Posts: 372
From: Douglasville, Ga
That little green crap your talking about RuZZel is actually corosion. My TT wiring harness is eat up with it. So i m waitin til i do my motor swap to change it out.
Old Mar 23, 2005 | 11:15 PM
  #10  
RuZZeLL's Avatar
Registered User
 
Joined: Feb 2005
Posts: 23
From: Granada Hills, CA
I've been studying my FSM most of the day- just learned that you can trace the wires from each sensor/connector/etc that is important under the hood to a pin on the ECU harness connector. SO, if you suspect corrosion as a culprit in some engine issues, just test each end of the line and see if you have full continuity. Cool beans.

Blink, Ruzzell, BLINK! Agh! It burns!
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Myzsucksass
300ZX (Z31) Performance / Technical
3
Nov 28, 2013 06:58 AM
turbo84z
300ZX (Z31) Performance / Technical
11
Oct 10, 2006 07:30 AM
HybridS130
280ZX Performance / Technical
15
Sep 2, 2006 05:50 PM
pearly whites
300ZX (Z32) Performance / Technical
4
Oct 30, 2003 01:37 PM
saaddaa7
300ZX (Z32) Performance / Technical
2
Oct 24, 2003 08:19 PM




All times are GMT -7. The time now is 03:16 AM.