Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: nyu notesfiles V1.1 4/1/84; site rocksvax.UUCP Path: utzoo!watmath!clyde!burl!ulysses!allegra!princeton!rocksvax!z From: z@rocksvax.UUCP Newsgroups: net.auto.tech Subject: Re: 82 Honda accord surges when cold (?) Message-ID: <42500001@rocksvax.UUCP> Date: Wed, 6-Nov-85 13:12:00 EST Article-I.D.: rocksvax.42500001 Posted: Wed Nov 6 13:12:00 1985 Date-Received: Thu, 7-Nov-85 06:39:44 EST References: <2777@watvlsi.UUCP> Lines: 50 Nf-ID: #R:watvlsi:-277700:rocksvax:42500001:000:1911 Nf-From: rocksvax!z Nov 6 13:12:00 1985 Almost correct. There are a couple of thermal sensitive systems that come into play on the Accord engine. This is from the `79 service manual: - Automatic Choke - - Description - - The automatic choke mechanism is designed to control both the choke valve - setting and the fast idle position during warmup. - - The mechanism consists of a bimetalic coil spring, heater, thermistor, - intake air sensor and external resistor. ... - - Operation - - Whenever the engine is running, there is a voltage to the electric heater unit, - which results in the heating of the bimetal coil. - - As the bimetal coil warms, it unwinds and open the choke valve. The amount - of choke opening is determined by the temperature of the heater, which in turn - is affected by the ambient temperature at the thermistor. - - - Fast Idle Unloader - - ... When the engine coolant temperature exceeds the set temperature of the - ignition timing thermosensor, the unloader solenoid valve in the emission - control box is switched "OFF", allowing the manifold vacuum to operate on the - fast idle unloader. - end quotes from service manual section 17 (Fuel System) What this means is if your car doesn't maintain a high-idle when cold then you have problems with the fast-idle system (probably the sensor). Check to make sure it is plugged in! It is on the right side of the engine near plugs. If the car runs lousy even at a high idle the there is probably problems with auto-choke. Other things mechanics seems to do... Check to make sure your igniter (electronic ignition) is plugged in. Also make sure your distributor is tight. Various shops have left my thermosensor and igniter unplugged along with leaving the distributor loose! Boy does that screw your performance. For you in the Rochester area: beware of Holtz! //Z\\ James M. Ziobro Ziobro.Henr@Xerox.ARPA {rochester,amd,sunybcs,ihnp4}!rocksvax!z