Re: TOY: horrible engine miss

["Kerry White" <kerry_e_white@xxxxxxxxxxx>]

Well I took loose my AFM and shook it aroubd while running to simulate bumps 
and no change.



>
>I am not sure, which engine you have, but I has the exact same symptoms on 
>my
>'92 4Runner. 3.0 3VZE Engine. I am sure that the same problem could occur 
>on the
>22Rs EFI or whatever.
>I tested everything, to include the Air Flow Meter in accordance with the 
>Toyota
>Maintenance Manual. All tests indicated good. The problem was in the 
>connector
>itself.
>1) Cut the sealant bead from the top of the AFM.
>2) Carefully remove the lid and retain for reinstallation.
>3) Remove the connector plug.
>4) Remove the two screws, which hold the connector.
>Note: You will notice that the connector can easily be moved. To my 
>surprise
>it was not soldered to the intergrated circuit board. The pins are spring 
>loaded
>
>to apply pressure to the IC board.
>The in lies the problem. The solder points on the IC board have become worn 
>and
>tarnished.
>5) Carefully remove the connector from the AFM case.
>6) Renew the solder, preferrably by adding a small amount of solder to each
>contact point. If you had to, you could probably clean the contact points 
>with
>light sandpaper.
>7) Reassemble the AFM and seal the lid.
>8) Start her up and test drive.
>Good Luck!
>Bryan P. Knowles
>insp79@attbi.com
>
>Kerry White wrote:
>
> > I've been trying to figure this out myself for about a week before 
>asking.
> >
> > sysmptoms: My engine misses, worst at full throttle. It will miss
> > sporadicaly at idle, and misses most often when going over bumps/ 
>rattling.
> > Checked for any loose connectors, found none, tried tapping/twisting
> > injectors and other electrical components, no change. Checked timing and
> > valve lash, both perfect (valves set to a tight .7 intake .11 exhaust).
> > Tried a different coil, put in a good junkyard TPS from an 85 celica 
>(before
> > it was worse (more violent while driving) with the TPS connected that 
>with
> > TPS disconnected, now is same either way). Check engine light will flash 
>on
> > while driving, pulled codes, replaced TPS, no codes coming now. Seldom 
>the
> > charge/brake lights will flash on when it missed. Has missed so bad it 
>died
> > on highway. EGR works, makes no difference if driven with vac. hose
> > disconnected from EGR valve.
> >
> > Also I have to give it about a 1/4 throttle to start, makes me suspect a
> > vacuum leak/AFM? I will ohm test AFM, though I doubt its bad.
> >
> > conditions: I have no fuel pressure VSV, just a vacuum line from intake
> > housing to fuel pressure regulator. And exhaust is disconnected in front 
>of
> > cat.
> >
> > possibilities: I still suspect fuel pump (since worst under load and at 
>full
> > throttle when it'd need more gas), distributor/wires/plugs (but they're
> > still pretty new), vacuum leak a strong suspicion. I tried spraying 
>starting
> > fluid/WD-40 all around vacuum lines, no change. ECU also suspect. I will
> > pull and ohm test it.
> >
> > Anyone?? please.?..
> >
> > -Kerry White
> >
> > _________________________________________________________________
> > Add photos to your e-mail with MSN 8. Get 2 months FREE*.
> > http://join.msn.com/?page=features/featuredemail
> >
> > 4x4Wire.com Toyota Section http://www.4x4Wire.com/toyota/
>
>4x4Wire.com Toyota Section http://www.4x4Wire.com/toyota/


_________________________________________________________________
The new MSN 8: advanced junk mail protection and 2 months FREE*  
http://join.msn.com/?page=features/junkmail


From owner-toyota@www.4x4Wire.com Thu Jan 30 15:16:10 2003
Received: (from majordomo@localhost)
	by www.4x4Wire.com (8.11.6/8.11.6) id h0ULGAk21135;
	Thu, 30 Jan 2003 15:16:10 -0600
Received: from hotmail.com (f114.law12.hotmail.com [64.4.19.114])
	by www.4x4Wire.com (8.11.6/8.11.6) with ESMTP id h0ULG9421132
	for <toyota@4x4Wire.com>; Thu, 30 Jan 2003 15:16:09 -0600
Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC;
	 Thu, 30 Jan 2003 13:09:19 -0800
Received: from 207.64.78.156 by lw12fd.law12.hotmail.msn.com with HTTP;
	Thu, 30 Jan 2003 21:09:19 GMT
X-Originating-IP: [207.64.78.156]
From: "Kerry White" <kerry_e_white@hotmail.com>
To: toyota@4x4Wire.com
Subject: RE: TOY: horrible engine miss
Date: Thu, 30 Jan 2003 15:09:19 -0600
Mime-Version: 1.0
Content-Type: text/plain; format=flowed
Message-ID: <F114Xb0zrAXBirbThA90000580c@hotmail.com>
X-OriginalArrivalTime: 30 Jan 2003 21:09:19.0283 (UTC) FILETIME=[DA9E5830:01C2C8A3]
Sender: owner-toyota@4x4Wire.com
Precedence: bulk
Reply-To: toyota@4x4Wire.com



Yup I tested the TPS before I bought it ($25), I have a FSM, tested fine. On 
your TPS, did it test to be good even when it had goo in it? I had "fixed" 
my old TPS too by cleaning the contact brushes inside, but it didn't last.
The device on the end of the fuel rail is the Fuel Pressure Regulator (FPR). 
I suspect I do have a fuel leak, because I drove it with no vac line to the 
FPR at all for several days, and the higher pressure probably caused a leak, 
which I can't find because it only leaks while shaking. I'm about to shake 
all my fuel lines while it running. And smoking a cigarette.

The search continues...


-Kerry White

p.s. j/k about the cigarette :p


>
>How do you know the TPS from the junkyard is good? Did you test the TPS?
>It's in the service manual and on this website:
>http://4crawler.cruiserpages.com/4x4/CheapTricks/TPS/index.shtml (that's
>really a very excellent writeup). Also there is a device at the end of the
>fuel line (the exact name of the device escapes me) that can leak or cause
>pressure fluctuations. Take my experience here, before you buy a new one
>(about $80 from the dealer) pop off the little plastic cover and make sure
>the screw in the middle is tight.
>
>I has similar problems that seemed to be fuel delivery and replaced the 
>fuel
>pump, fuel filter, the above mentioned "device". It turned out to be the
>TPS. I removed it, tested it, and found it to be full of a huge amount of
>goo and sludge. Cleaned it with WD-40, replaced it, adjusted it, problem
>went away. Good luck!
>
>Marc Sahr
>
>-----Original Message-----
>From: owner-toyota@4x4Wire.com [mailto:owner-toyota@4x4Wire.com]On
>Behalf Of Kerry White
>Sent: Wednesday, January 29, 2003 7:18 PM
>To: toyota@4x4Wire.com
>Subject: Re: TOY: horrible engine miss
>
>
>I will DEFINATELY check that out tomorrow.
>
>Thanks!!
>
>
>
> >
> >I am not sure, which engine you have, but I has the exact same symptoms 
>on
> >my
> >'92 4Runner. 3.0 3VZE Engine. I am sure that the same problem could occur
> >on the
> >22Rs EFI or whatever.
> >I tested everything, to include the Air Flow Meter in accordance with the
> >Toyota
> >Maintenance Manual. All tests indicated good. The problem was in the
> >connector
> >itself.
> >1) Cut the sealant bead from the top of the AFM.
> >2) Carefully remove the lid and retain for reinstallation.
> >3) Remove the connector plug.
> >4) Remove the two screws, which hold the connector.
> >Note: You will notice that the connector can easily be moved. To my
> >surprise
> >it was not soldered to the intergrated circuit board. The pins are spring
> >loaded
> >
> >to apply pressure to the IC board.
> >The in lies the problem. The solder points on the IC board have become 
>worn
> >and
> >tarnished.
> >5) Carefully remove the connector from the AFM case.
> >6) Renew the solder, preferrably by adding a small amount of solder to 
>each
> >contact point. If you had to, you could probably clean the contact points
> >with
> >light sandpaper.
> >7) Reassemble the AFM and seal the lid.
> >8) Start her up and test drive.
> >Good Luck!
> >Bryan P. Knowles
> >insp79@attbi.com
> >
> >Kerry White wrote:
> >
> > > I've been trying to figure this out myself for about a week before
> >asking.
> > >
> > > sysmptoms: My engine misses, worst at full throttle. It will miss
> > > sporadicaly at idle, and misses most often when going over bumps/
> >rattling.
> > > Checked for any loose connectors, found none, tried tapping/twisting
> > > injectors and other electrical components, no change. Checked timing 
>and
> > > valve lash, both perfect (valves set to a tight .7 intake .11 
>exhaust).
> > > Tried a different coil, put in a good junkyard TPS from an 85 celica
> >(before
> > > it was worse (more violent while driving) with the TPS connected that
> >with
> > > TPS disconnected, now is same either way). Check engine light will 
>flash
> >on
> > > while driving, pulled codes, replaced TPS, no codes coming now. Seldom
> >the
> > > charge/brake lights will flash on when it missed. Has missed so bad it
> >died
> > > on highway. EGR works, makes no difference if driven with vac. hose
> > > disconnected from EGR valve.
> > >
> > > Also I have to give it about a 1/4 throttle to start, makes me suspect 
>a
> > > vacuum leak/AFM? I will ohm test AFM, though I doubt its bad.
> > >
> > > conditions: I have no fuel pressure VSV, just a vacuum line from 
>intake
> > > housing to fuel pressure regulator. And exhaust is disconnected in 
>front
> >of
> > > cat.
> > >
> > > possibilities: I still suspect fuel pump (since worst under load and 
>at
> >full
> > > throttle when it'd need more gas), distributor/wires/plugs (but 
>they're
> > > still pretty new), vacuum leak a strong suspicion. I tried spraying
> >starting
> > > fluid/WD-40 all around vacuum lines, no change. ECU also suspect. I 
>will
> > > pull and ohm test it.
> > >
> > > Anyone?? please.?..
> > >
> > > -Kerry White
> > >
> > > _________________________________________________________________
> > > Add photos to your e-mail with MSN 8. Get 2 months FREE*.
> > > http://join.msn.com/?page=features/featuredemail
> > >
> > > 4x4Wire.com Toyota Section http://www.4x4Wire.com/toyota/
> >
> >4x4Wire.com Toyota Section http://www.4x4Wire.com/toyota/
>
>
>_________________________________________________________________
>Help STOP SPAM with the new MSN 8 and get 2 months FREE*
>http://join.msn.com/?page=features/junkmail
>
>4x4Wire.com Toyota Section http://www.4x4Wire.com/toyota/
>
>
>4x4Wire.com Toyota Section http://www.4x4Wire.com/toyota/


_________________________________________________________________
Tired of spam? Get advanced junk mail protection with MSN 8. 
http://join.msn.com/?page=features/junkmail


From owner-toyota@www.4x4Wire.com Thu Jan 30 15:35:36 2003
Received: (from majordomo@localhost)
	by www.4x4Wire.com (8.11.6/8.11.6) id h0ULZaf24119;
	Thu, 30 Jan 2003 15:35:36 -0600
Received: from harrier.mail.pas.earthlink.net (harrier.mail.pas.earthlink.net [207.217.120.12])
	by www.4x4Wire.com (8.11.6/8.11.6) with ESMTP id h0ULZZ424111
	for <toyota@4x4wire.com>; Thu, 30 Jan 2003 15:35:35 -0600
Received: from dialup-64.154.186.192.dial1.seattle1.level3.net ([64.154.186.192] helo=LILMIKE)
	by harrier.mail.pas.earthlink.net with smtp (Exim 3.33 #1)
	id 18eMLO-0004nn-00
	for toyota@4x4Wire.com; Thu, 30 Jan 2003 13:35:34 -0800
Message-ID: <000a01c2c8a7$d819d360$1700000a@LILMIKE>
From: "Mike Piechowski" <lil_mike@earthlink.net>
To: <toyota@4x4Wire.com>
References: <F137fE8B9DjCSDAmwty00005665@hotmail.com>
Subject: TOY: Re: horrible engine miss
Date: Thu, 30 Jan 2003 13:37:51 -0800
MIME-Version: 1.0
Content-Type: text/plain;
	charset="iso-8859-1"
Content-Transfer-Encoding: 7bit
X-Priority: 3
X-MSMail-Priority: Normal
X-Mailer: Microsoft Outlook Express 6.00.2800.1123
X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1123
Sender: owner-toyota@4x4Wire.com
Precedence: bulk
Reply-To: toyota@4x4Wire.com

Last time my engine missed like this was due to an aftermarket (Jacob's)
ignition box failure. I went back to the factory one (had not removed it
yet) and everything worked fine. Did you replace your igniter and coil as a
unit (it is the little box on the coil in my '92, not sure where yours mught
be), or just your coil?

Before I went back to the factory ignition,  I also replaced my TPS (My old
one tested fine, but I KNEW it couldn't be that high-dollar aftermarket
ignition). Disconnected the Jacob's, went back to Toyota, problem solved.

Good luck.

Mike
----- Original Message ----- 
From: "Kerry White" <kerry_e_white@hotmail.com>
To: <toyota@4x4Wire.com>; <toy4x4@moab.off-road.com>
Sent: Wednesday, January 29, 2003 2:01 PM
Subject: TOY: horrible engine miss


>
>
> I've been trying to figure this out myself for about a week before asking.
>
> sysmptoms: My engine misses, worst at full throttle. It will miss
> sporadicaly at idle, and misses most often when going over bumps/
rattling.
> Checked for any loose connectors, found none, tried tapping/twisting
> injectors and other electrical components, no change. Checked timing and
> valve lash, both perfect (valves set to a tight .7 intake .11 exhaust).
> Tried a different coil, put in a good junkyard TPS from an 85 celica
(before
> it was worse (more violent while driving) with the TPS connected that with
> TPS disconnected, now is same either way). Check engine light will flash
on
> while driving, pulled codes, replaced TPS, no codes coming now. Seldom the
> charge/brake lights will flash on when it missed. Has missed so bad it
died
> on highway. EGR works, makes no difference if driven with vac. hose
> disconnected from EGR valve.
>
>
> Also I have to give it about a 1/4 throttle to start, makes me suspect a
> vacuum leak/AFM? I will ohm test AFM, though I doubt its bad.
>
> conditions: I have no fuel pressure VSV, just a vacuum line from intake
> housing to fuel pressure regulator. And exhaust is disconnected in front
of
> cat.
>
> possibilities: I still suspect fuel pump (since worst under load and at
full
> throttle when it'd need more gas), distributor/wires/plugs (but they're
> still pretty new), vacuum leak a strong suspicion. I tried spraying
starting
> fluid/WD-40 all around vacuum lines, no change. ECU also suspect. I will
> pull and ohm test it.
>
> Anyone?? please.?..
>
>
> -Kerry White
>
>
>
> _________________________________________________________________
> Add photos to your e-mail with MSN 8. Get 2 months FREE*.
> http://join.msn.com/?page=features/featuredemail
>
> 4x4Wire.com Toyota Section http://www.4x4Wire.com/toyota/