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cruise throttle surge
#18
(11-11-2019, 11:38 AM)fixkick Wrote:
(11-11-2019, 08:40 AM)1995 toad Wrote:
(11-11-2019, 08:23 AM)fixkick Wrote:
(11-11-2019, 07:58 AM)1995 toad Wrote: well I took the new egr off and it seals off the passage from the exhaust to the intake but the port from the intake doesn't seal off the vacuum when the egr  is closed so the idle is low..
can I block off the egr and run it that way..?

but the port from the intake doesn't seal off the vacuum?
please explain, this. more details.

the port in the egr that comes from the intake manifold does not seal when the egr is closed. so it has a vacuum leak through the egr (where exactly is this LEAK)

tell what does not seal,  be accurate, the drawing NOW matches your car, LATE 95.5 calif version of car it  is. MONO PORT EGR, vastly better than the early ones.
HOSE #50  (A STAINLESS STEEL PIPE IT IS), IS UNDER FULL PLENUM VACUUM AT ALL TIMES RUNNING.  SO THE 2 GASKETS ON SAID PIPE MUST NEVER FAIL.
THE EGR IS UNDER powerful back pressure at the EGR #5 main. left side port (drivers perspective left , driver side, usa)
The EGR main is 100% closed, at idle, and even key off. but at idle the valve inside EGR #5 main is closed and that exhaust huge pressure never lands on pipe 50
and when that happens closed MAIN the PIPe 50 is under full engine intake plenum, vacuum 19"HG at idle.  and there are vacuum leaks in pipe 50 or hell will be paid for that.
that is how this works , how the mod works is fully covered on my EGR pages. fixkick.com type EGR in the search box (hints)
see the P mark on end of hose 16? that means ported vacuum that means no VACUUM there at idle. and THat VSV valve is closed at idle and WOT, so vacuum is DOUBLE DEAD
at idle. (if key is off VSV is not closed, it vents with no DC 12v power until ECU turns ON)

 [Image: 92-95-EGR-16v.jpg]



if any of  this fails DTC 51 happens. (if you just unplug hose 23 and put screw or golf tee in the end , EGR main stays closed and stays that way for ever. code 51 full time.
Many 92-98 cars have the above setup and many old quad port egr, are replace with the above better setup. (this mono port intake is best)
the vacuum that leaking is coming from the metal line that leads to the intake. (how to did you prove that? ?)
when the egr valve is closed the vacuum leaks out of the valve.
the exhaust port side is sealed from the intake side of the port.

I do not unerstand any of that, use ID numbers when talking about such complex EGR issues. please.
if pipe 50 leaks AIR , as it surely will of both gaskets are bad or missing #51,  for SURE.  if you have a leak at 50 tell how you know that.?  I can not guess testing methods , they must be told. please elaborate what you did. testing.
Pipe 50 is under hard vacuum at all times running at idle, if the EGR opens , it is now under hard flowing exhaust, there is no AIR here ever, its vacuum hard or exhaust. in pipe 50
in fact 50 is the mono port EGR injector PIPE<
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Messages In This Thread
cruise throttle surge - by 1995 toad - 10-13-2019, 07:39 AM
RE: cruise throttle surge - by fixkick - 10-13-2019, 08:06 AM
RE: cruise throttle surge - by 1995 toad - 10-13-2019, 12:05 PM
RE: cruise throttle surge - by fixkick - 10-13-2019, 09:34 PM
RE: cruise throttle surge - by 1995 toad - 10-14-2019, 01:58 AM
RE: cruise throttle surge - by fixkick - 10-13-2019, 08:08 AM
RE: cruise throttle surge - by fixkick - 10-13-2019, 09:36 PM
RE: cruise throttle surge - by 1995 toad - 10-14-2019, 09:31 AM
RE: cruise throttle surge - by fixkick - 10-14-2019, 06:04 AM
RE: cruise throttle surge - by 1995 toad - 10-14-2019, 09:39 AM
RE: cruise throttle surge - by 1995 toad - 10-20-2019, 01:19 AM
RE: cruise throttle surge - by 1995 toad - 10-29-2019, 12:15 PM
RE: cruise throttle surge - by 1995 toad - 11-11-2019, 07:52 AM
RE: cruise throttle surge - by 1995 toad - 11-11-2019, 07:58 AM
RE: cruise throttle surge - by fixkick - 11-11-2019, 08:23 AM
RE: cruise throttle surge - by 1995 toad - 11-11-2019, 08:40 AM
RE: cruise throttle surge - by fixkick - 11-11-2019, 11:38 AM
RE: cruise throttle surge - by 1995 toad - 11-11-2019, 11:49 AM
RE: cruise throttle surge - by fixkick - 11-11-2019, 11:04 PM
RE: cruise throttle surge - by 1995 toad - 11-12-2019, 12:03 PM
RE: cruise throttle surge - by fixkick - 11-11-2019, 11:10 PM
RE: cruise throttle surge - by fixkick - 11-11-2019, 11:20 PM
RE: cruise throttle surge - by fixkick - 11-12-2019, 11:51 PM
RE: cruise throttle surge - by 1995 toad - 11-13-2019, 02:16 PM
RE: cruise throttle surge - by fixkick - 11-13-2019, 12:00 AM
RE: cruise throttle surge - by fixkick - 11-13-2019, 10:22 PM
RE: cruise throttle surge - by 1995 toad - 11-14-2019, 02:32 PM
RE: cruise throttle surge - by fixkick - 11-14-2019, 10:03 PM
RE: cruise throttle surge - by 1995 toad - 11-15-2019, 01:31 PM
RE: cruise throttle surge - by fixkick - 11-15-2019, 11:11 PM
RE: cruise throttle surge - by fixkick - 11-13-2019, 10:29 PM
RE: cruise throttle surge - by fixkick - 11-13-2019, 11:01 PM
RE: cruise throttle surge - by fixkick - 11-13-2019, 11:22 PM
RE: cruise throttle surge - by fixkick - 11-14-2019, 11:11 PM
RE: cruise throttle surge - by fixkick - 11-16-2019, 12:16 AM
RE: cruise throttle surge - by fixkick - 11-16-2019, 12:40 AM

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