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Re: Wher's My Time/Temperature Switch Posted by DougM [Email]  (#211)  [Profile/Gallery]
(more from DougM) on Tue, 20 Jan 2004 19:19:05
In Reply to: Wher's My Time/Temperature Switch, Sam Seward, Tue, 20 Jan 2004 18:12:19 Members do not see ads below this line. - Help Keep This Site Online - Signup |
When the starter is engaged, the cold start valve receives current from terminal 16 of the starter ans is grounded by the thermo-time switch. The thermo-time switch controls the injection time depending on the actual temperature. At temperatures above +113F the thermo-time switch is cut out. At lower engine temperatures the closing time is increased. At about -4F and colder, the maximum injection time is achieved(about 8 seconds). At acceleration the vacuum contact is influenced by the pressure change in the inlet manifold and the cold start valve will get a short injection impulse if the engine is cold(temp below +113F)
The wires going to the connector of the thermo time switch are green and yellow.
To test the switch, check that the switch closes when the engine is started by means of connecting a test lamp in series across the contacts of the cold start valve plug. It is not possible to make a more accurate check of the cut-in time or temperature. If the condition of the switch is at all in doubt, it should be replaced.
The above and below info came from my service manual.
posted by 68.68.16...
, Wed, 21 Jan 2004 20:44:49, Tue, 20 Jan 2004 19:19:05 <-- Viewing This Message, Tue, 27 Jan 2004 04:13:25
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