what does no fan mean.?
you can not run a car , Rad fan free, or it will overheat at all stop signs. (and serious engine damage)
(no air across radiator , assures that)
you typed that , in , sorry if you did, use cell phone camera and put it in gallery, just edit out private stuff. the post it.
1581 FAIL (we can work this)
good news the hard part to fix is ok. the nasty exhaust path , flows, (but it might be only 2 of 4 injectors flowing,,, so ???)
we will find out later.
if forgot to ask you
did you insert the diagnostic jumper in the DLC connect and get flash code 12s, not 51s?
http://www.fixkick.com/CEL/CEL.html#OBD1codes
some errors (DTC) can cause EGR to go off line.
my guess code 12s, = good. (no guess)
but first lets make sure (im sure this will work) but is easy so..
see that mod valve. see bottom thicker hose,?
remove it running hot or cold, , cold safer.
it must putt.
it burps there , over and over, it will because your egr is new, and the head tunnel, and exh. manifold is free flowing...
ok the bark tube works.
next we race engine and see of the EGR opens on its own.
for now we will check the smart side, vacuum and electrics.
93 16v
in later years 1994 and later, you must drive faster than 1 mph for egr to open
but on early years no.
TEST A: alpha
just gun the throttle (by hand) and the EGR main, must open by its self.
does it?
It will take a mirror to see it. may take a hot engine. to get it to wake up. and all are dead at idle (2 ways dead at idle or ,3 ways in 1994+)
it will open more as you gun the throttle more.
if not?, it;'s dead. we fix that. (it will be dead i bet)
if the egr does not open the EGR valve, gunned.
2 possibles (wrong ECU in car ,as 94 or 95,) If true we do test with extra step)
or
below is messed up:
using that hand vacuum tool as a vacuum gauge.
i pull the P hose end at 22 connect the gauge there, if it dont pull 2 to 8 inches of vacuum move gauge forward.
connect it up to each line 1 by 1
gauge to end of 19 (same) vacuum
gauge to end of 16
if 16 fails the Throttle body port is clogged. easy fix.
if 16 is ok, then VSV is bad. (must be racing idle , to open this vsv, or
no, the vsv bad or ecu wrong ecu. (ECU ofter july1 1993 build may be in truth 1994 ecu and special rules) if this fails tell me.. we do 1 more simple test.
yes, good. VSV works.,
line 19 good makes 22 good, if lines metal not swapped to hoses.
ok we made it to MOD.
we have vacuum to the mod P nipple gunned.
now 22, "Q" nipple, same deal but modulated vacuum, is here, if its dead, 0vac here then the EGR fails above. TEST A:
the one common fail on the mode is easy,
clean its MOD filter then clean hole path.
http://www.fixkick.com/sensors/EGR/modva...-test.html
see red path here
this is a hidden passage, that LOVES to clog, clean it and almost all MODs start working.
http://www.fixkick.com/sensors/EGR/modul...tioned.JPG
your car.,
![[Image: G16b-QP.JPG]](http://www.fixkick.com/sensors/EGR/G16b-QP.JPG)
ask questions ,its easy but tedious...
also check EGR VSV coil for ohms, (35 IIRC) not infinity. not 0 ohms.
in each case using the store bought $1 Tee fitting for vacuum lines.
sold in the store section with screws, and help parts. etc. easy find.
at the worst a $10 walmart DMM meter, or better.
to check vsv ohms and volts.
at the worst worst, we put rear axle , on jack stands. to spin tires. (94+ ecu)
i forgot to ask,, im getting old.
does your speedometer work>?
there is a tricky part here.
in any rate a vacuum gauge shows vacuum on P or Q , WITH GAUGE DEAD HEADED THERE. GUNNED THROTTLE,
MY GUESS IS, Q PORT IS DEAD.
IF P NIPPLE IS GOOD AND P FAILS. THE FILTER OR HIDDEN VENT IS CLOGGED, OR THE PUTT TUBE IS DEAD(<ITS NOT)
now tricky test B: (say, WE have vacuum to MOD P, above GUAGE SHUNT TEST.)
we can run hot engine and gun throttle by hand.
and remove (extend) hose 13, hose 13 still on mod nipple, you blow into 13 and the MOD locks up, and the EGR main opens . and engine wants to stall.
vacuum at P and lips blowing 13 hose you can lockup the MOD easy. and when that happens vacuum goes from P to Q , like a shot..
mod video
bench test. the p to q is just a pipe with V valve in middle.
so if I bow 13 nipple and pump the hand pump, the V valve closes and latches up. (finger on end of q nipple sealing it)
http://www.fixkick.com/videos/FLV-all/sh...tml#EGRMOD
we can do this step by step, if you need it.
you can not run a car , Rad fan free, or it will overheat at all stop signs. (and serious engine damage)
(no air across radiator , assures that)
you typed that , in , sorry if you did, use cell phone camera and put it in gallery, just edit out private stuff. the post it.
1581 FAIL (we can work this)
good news the hard part to fix is ok. the nasty exhaust path , flows, (but it might be only 2 of 4 injectors flowing,,, so ???)
we will find out later.
if forgot to ask you
did you insert the diagnostic jumper in the DLC connect and get flash code 12s, not 51s?
http://www.fixkick.com/CEL/CEL.html#OBD1codes
some errors (DTC) can cause EGR to go off line.
my guess code 12s, = good. (no guess)
but first lets make sure (im sure this will work) but is easy so..
see that mod valve. see bottom thicker hose,?
remove it running hot or cold, , cold safer.
it must putt.
it burps there , over and over, it will because your egr is new, and the head tunnel, and exh. manifold is free flowing...
ok the bark tube works.
next we race engine and see of the EGR opens on its own.
for now we will check the smart side, vacuum and electrics.
93 16v
in later years 1994 and later, you must drive faster than 1 mph for egr to open
but on early years no.
TEST A: alpha
just gun the throttle (by hand) and the EGR main, must open by its self.
does it?
It will take a mirror to see it. may take a hot engine. to get it to wake up. and all are dead at idle (2 ways dead at idle or ,3 ways in 1994+)
it will open more as you gun the throttle more.
if not?, it;'s dead. we fix that. (it will be dead i bet)
if the egr does not open the EGR valve, gunned.
2 possibles (wrong ECU in car ,as 94 or 95,) If true we do test with extra step)
or
below is messed up:
using that hand vacuum tool as a vacuum gauge.
i pull the P hose end at 22 connect the gauge there, if it dont pull 2 to 8 inches of vacuum move gauge forward.
connect it up to each line 1 by 1
gauge to end of 19 (same) vacuum
gauge to end of 16
if 16 fails the Throttle body port is clogged. easy fix.
if 16 is ok, then VSV is bad. (must be racing idle , to open this vsv, or
no, the vsv bad or ecu wrong ecu. (ECU ofter july1 1993 build may be in truth 1994 ecu and special rules) if this fails tell me.. we do 1 more simple test.
yes, good. VSV works.,
line 19 good makes 22 good, if lines metal not swapped to hoses.
ok we made it to MOD.
we have vacuum to the mod P nipple gunned.
now 22, "Q" nipple, same deal but modulated vacuum, is here, if its dead, 0vac here then the EGR fails above. TEST A:
the one common fail on the mode is easy,
clean its MOD filter then clean hole path.
http://www.fixkick.com/sensors/EGR/modva...-test.html
see red path here
this is a hidden passage, that LOVES to clog, clean it and almost all MODs start working.
http://www.fixkick.com/sensors/EGR/modul...tioned.JPG
your car.,
ask questions ,its easy but tedious...
also check EGR VSV coil for ohms, (35 IIRC) not infinity. not 0 ohms.
in each case using the store bought $1 Tee fitting for vacuum lines.
sold in the store section with screws, and help parts. etc. easy find.
at the worst a $10 walmart DMM meter, or better.
to check vsv ohms and volts.
at the worst worst, we put rear axle , on jack stands. to spin tires. (94+ ecu)
i forgot to ask,, im getting old.
does your speedometer work>?
there is a tricky part here.
in any rate a vacuum gauge shows vacuum on P or Q , WITH GAUGE DEAD HEADED THERE. GUNNED THROTTLE,
MY GUESS IS, Q PORT IS DEAD.
IF P NIPPLE IS GOOD AND P FAILS. THE FILTER OR HIDDEN VENT IS CLOGGED, OR THE PUTT TUBE IS DEAD(<ITS NOT)
now tricky test B: (say, WE have vacuum to MOD P, above GUAGE SHUNT TEST.)
we can run hot engine and gun throttle by hand.
and remove (extend) hose 13, hose 13 still on mod nipple, you blow into 13 and the MOD locks up, and the EGR main opens . and engine wants to stall.
vacuum at P and lips blowing 13 hose you can lockup the MOD easy. and when that happens vacuum goes from P to Q , like a shot..
mod video
bench test. the p to q is just a pipe with V valve in middle.
so if I bow 13 nipple and pump the hand pump, the V valve closes and latches up. (finger on end of q nipple sealing it)
http://www.fixkick.com/videos/FLV-all/sh...tml#EGRMOD
we can do this step by step, if you need it.
http://www.fixkick.com