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1992 lx loses power when power shifting in 2nd

  • Thread starter Thread starter 65cobra
  • Start date Start date Mar 22, 2004
6

65cobra

New Member
Dec 31, 2003
34
0
0
new york
Mar 22, 2004
#1
  • Mar 22, 2004
  • #1
Hello all, I have a 1992 lx with the following mods, bbk equal length headers, pullies, king cobra clutch, H pipe, and american thunder 2 chamber cat back system. Heres what happens, the car pulls hard but when I power shift from first gear to 2 nd gear the motor bogs and then starts accelerating the tires don't even chirp. From 1st I am shifting at about 5500rpms, the car has 90k miles on it and it runs really well but for some reason any time I power shift into second the motor temporarily loses power for about a second. Does anyone Know what the problem could be?
 
S

Schlodes

Founding Member
Feb 26, 2001
354
0
0
Lidsville.... West side dawg..
Mar 22, 2004
#2
  • Mar 22, 2004
  • #2
Hmm..

My buddies 86 GT just had a similar problem and we tried wires, cap, rotor, plugs, coil, and ran it through all the tests on my Sunpro scantool to check for sensors... NOTHING. At first it was like your car, he could wail it in first, and then grab 2 and it would lay down and just not go... Bog got progressively worse, to the point where you would nail it in 1st and it would just bog... so we hooked up a fuel pressure guage and whammo! Only 25 PSI with the vac line removed Stock pump was pooping out.

Installed a new pump, now has 38 PSI, and she screams again.
 
S

SKYWALKR

New Member
Sep 30, 2003
45
0
0
Cumberland, Md
Mar 22, 2004
#3
  • Mar 22, 2004
  • #3
Mine started doing that right before my clutch gave out...
 
6

65cobra

New Member
Dec 31, 2003
34
0
0
new york
Mar 23, 2004
#4
  • Mar 23, 2004
  • #4
Schlodes said:
Hmm..

My buddies 86 GT just had a similar problem and we tried wires, cap, rotor, plugs, coil, and ran it through all the tests on my Sunpro scantool to check for sensors... NOTHING. At first it was like your car, he could wail it in first, and then grab 2 and it would lay down and just not go... Bog got progressively worse, to the point where you would nail it in 1st and it would just bog... so we hooked up a fuel pressure guage and whammo! Only 25 PSI with the vac line removed Stock pump was pooping out.

Installed a new pump, now has 38 PSI, and she screams again.
Click to expand...
Thanks for the info, I'll try anything.
 
M

Matts89LX5.0

Founding Member
Nov 1, 2002
1,314
0
36
Long Island, NY
Mar 23, 2004
#5
  • Mar 23, 2004
  • #5
Schlodes may be right...it's worth a shot
 
9

99 silvr35th

New Member
Jan 23, 2004
52
0
0
Long Island
Mar 23, 2004
#6
  • Mar 23, 2004
  • #6
dude, try and get a 4.6 u should be alright!
 
6

65cobra

New Member
Dec 31, 2003
34
0
0
new york
Mar 23, 2004
#7
  • Mar 23, 2004
  • #7
.5.0's are king!!
 
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