DIY_EFI Digest Wednesday, November 10 1999 Volume 04 : Number 635 In this issue: Re: Motronic 4.1 newbie--still struggling Re: Electromotive CPS Pinout RE: DIY_EFI Digest V4 #634 Welcome to diy_efi-digest See the end of the digest for information on subscribing to the DIY_EFI or DIY_EFI-Digest mailing lists. ---------------------------------------------------------------------- Date: 11 Nov 99 00:32:16 +1200 From: "Tom Parker" Subject: Re: Motronic 4.1 newbie--still struggling Derek Kaznoski wrote: >I can hear a distinct hissing sound coming from around the bottom of the >plenum chamber where it intersects with the engine or just forward of this >area. This hissing intensifies just after the throttle is blipped and >before the engine responds. It continues with decreased intensity as the >rpm's rise. To me, this sounds like an air leak, but I've never heard one. >Could this sound be coming from something else, such as circulating coolant? When this sort of problem is a possiblity with a carb, I've always been told to spray something like wd40 around possible leak points. The extra fuel richens the (rather lean) mixture and the revs rise. If I understand efi correctly, when it is running in closed loop at idle, it should be compensating for the extra air by putting in more fuel in. So adding even more fuel (and wd40 doesn't run your engine so well) shouldn't make much of a difference. Worth a try, if spraying has any effect then there sounds like a problem to me. - -- Tom Parker - parkert@xxx.nz - http://www.geocities.com/MotorCity/Track/8381/ ------------------------------ Date: Wed, 10 Nov 1999 07:26:59 -0800 From: Jason Leone Subject: Re: Electromotive CPS Pinout DIY_EFI Digest wrote: > > Date: 10 Nov 99 18:00:33 +1200 > From: "Tom Parker" > Subject: Electromotive CPS Pinout > > Hi, > > I've just bought an electromotive crank trigger wheel and sensor. The sensor > has 3 wires: a red one, a black one and a braided shield. I'm assuming that > the sensor is a normal hall effect device. This would mean there is a ground, > a power supply and a sensor output. > > Now, I could guess that the red wire is the power, the braid is the ground and > the black is the signal, but I don't want to blow it up. Does anyone have a > pinout for this sensor or a schematic for a circuit to drive it? > > Does it need any current limiting resistor in the power supply? > You should have a Black wire (this is the shield), a Green wire (this is for the sensor ground), and a Red wire (this goes to the MAG PU signal input on the TEC II). So, the Red should be the signal wire. Good luck. Jason ------------------------------ Date: Wed, 10 Nov 1999 10:53:09 -0600 From: Jim Brandon Subject: RE: DIY_EFI Digest V4 #634 This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. - ------_=_NextPart_001_01BF2B9C.11B3F684 Content-Type: text/plain; charset="iso-8859-1" The best way to locate vacuum leaks is to use an alcohol based carb cleaner and spray the area of the suspected leak. If the engine picks up RPM that is your leak. - ------_=_NextPart_001_01BF2B9C.11B3F684 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable RE: DIY_EFI Digest V4 #634

The best way to locate vacuum leaks is to use an = alcohol based carb cleaner and spray the area of the suspected = leak.  If the engine picks up RPM that is your leak.

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