 cylinder head temp sensor, what the brain thinks |
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| worn |
 Jun 19 2013, 09:14 AM
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Winner of the Utah Twisted Joint Award  Group: Members Posts: 3,560 Joined: 3-June 11 From: Madison, WI and North Bend WA Member No.: 13,152 Region Association: Upper MidWest 
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Well, I have been tweaking the MPS. I still am having low torque below 2,000 rpm, making smooth transitions to speed a bit more dramatic than I would like. I think that the cam may be playing a role here that I may never tune out completely. Now over 2,000 is another story (IMG:style_emoticons/default/laugh.gif) (IMG:style_emoticons/default/w00t.gif)
The point of this post is that if you are fooling around and the cylinder head temperature lead (I think it is Temp I) comes undone, the brain sees infinite resistance. It therefore, on a warm summer evening, thinks the motor is frozen cold and dumps in fuel. It won't start. You have spark, you have fuel, but the thing is flooded to the gills. Nooo, its EFI! Yep, flooded. (IMG:style_emoticons/default/hissyfit.gif) So I started thinking that a spare might be in order since no start can mean travel by foot - or used to before cell phones. An alternative would be alligator clips to simply ground the lead. That way the brain would think the engine was hot and you could limp home. My list of spares on a trip away from home is growing. |
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| ThinAir |
Jul 12 2013, 12:13 PM
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Best friends Group: Members Posts: 2,569 Joined: 4-February 03 From: Flagstaff, AZ Member No.: 231 Region Association: Southwest Region
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Update: I just did the first fill-up after making these changes. Normally I get 22 mpg max for around-town driving. This time I got 25.22 mpg. I'm a happy camper! (IMG:style_emoticons/default/driving.gif)
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| Retread |
Jul 12 2013, 03:55 PM
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Newbie Group: Members Posts: 26 Joined: 5-March 06 Member No.: 5,672 |
QUOTE(ThinAir @ Jul 12 2013, 06:13 PM)  Update: I just did the first fill-up after making these changes. Normally I get 22 mpg max for around-town driving. This time I got 25.22 mpg. I'm a happy camper! (IMG:style_emoticons/default/driving.gif) I have used DEMA ELGIN's "improved: stock profile non numerous D-jet engines. depending on the age and condition of the injection components, the setup has been from easy to moderately challenging. Never an surmountable hill to climb. |
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Posts in this topic
worn cylinder head temp sensor Jun 19 2013, 09:14 AM
lsintampa May be why some go to carbs.
Once something with... Jun 19 2013, 09:26 AM stugray Worn,
My recent experience says you are correct. ... Jun 19 2013, 11:47 AM Cap'n Krusty
Well, I have been tweaking the MPS. I still am h... Jun 19 2013, 01:43 PM
worn
Well, thanks Capn'. Yeah. The big problem ... Jun 19 2013, 03:13 PM worn
As for the camshaft, I'm guessing you are tal... Jun 19 2013, 03:15 PM stugray
I have a stock cam with matching lifters I would... Jun 19 2013, 03:28 PM Cap'n Krusty Webcam has been selling that grind for as long as ... Jun 19 2013, 04:09 PM worn
Webcam has been selling that grind for as long as... Jun 19 2013, 09:37 PM green914
May be why some go to carbs.
Once something wit... Jun 19 2013, 04:47 PM ThinAir FWIW, I'm running an Elgin 330-1 cam in an oth... Jun 20 2013, 12:56 AM r_towle Ask SLITS nicely if he has the 411 VW mps unit he ... Jul 12 2013, 09:16 PM Tom The CHT is TS2 and contrary to what The Cap'n ... Jul 14 2013, 08:24 AM |
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