Home  |  Forums  |  914 Info  |  Blogs
 
914World.com - The fastest growing online 914 community!
 
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG. This site is not affiliated with Porsche in any way.
Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners.
 

Welcome Guest ( Log In | Register )

> 1.8 CHT sensor, Cant find any for sale
djway
post Jul 12 2016, 04:49 PM
Post #1


Senior Member
***

Group: Members
Posts: 787
Joined: 16-October 15
From: Riverside
Member No.: 19,266
Region Association: Southern California



I have a bad head temperature sensor on my 1974 1.8 914. I called Pelican Parts and they say they are not available. My car is just dumping fuel and I cant drive it until I get a new one.
Where can I find them?
Thanks
Dwayne
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
 
Reply to this topicStart new topic
Replies
djway
post Jul 15 2016, 12:12 PM
Post #2


Senior Member
***

Group: Members
Posts: 787
Joined: 16-October 15
From: Riverside
Member No.: 19,266
Region Association: Southern California



Since I have your attention (IMG:style_emoticons/default/smile.gif) After putting in the CHT and adjusting the AFS wiper the car idled fine and stopped belching smoke. The next afternoon I put a timming light on it just to confirm advance before taking for a longer drive. Now the car idles around 600 rpm and the adjustment on the throttle body wont bring it up much at all and there is a bit of smoke again.
I did tear apart and reassemble the throttle body and I am thinking I may have the butterfly in a bit off. Full disclosure about a week ago I knew nothing about FI or L-Jet or even how to use a multimeter. Luckily I learn rapidly and was able to get it running again but lack of experience in a hindrance in knowing which spot to look.
I did have some mean backfires the first day I worked on it so I guess that could have damaged something.
If I am not successful with the throttle body, what else should I do?

List so far.
Multi vacuum tube leaks and tear in boot repaired. No more can be found.
Timing correct.
Valves correct.
All 5 injectors pulled and left under pressure for several hours, no leaks.
All 5 injectors have proper resistance. The 4 in the heads at 3 ohm and the cold start valve at 4 ohm.
Fuel pump operates correctly and at proper pressure, a steady 36lbs.
Full throttle switch operates properly.
Aux air valve closes and re opens but I am not sure if it opens completely as I have never looked at another for comaprison.
Timed thermal sensor is giving the proper resistance signal, and again cold start valve not squirting when it should not.
The car accelerates properly and manual movement of the AFS sensor does not help idle.
All I can think of is I did something a little off in the throttle body. I can manually open it slightly and it idles fine. If there were an idle screw I would be OK right now, theoretically. I can create a small vacuum leak and it idles right up.
Any other thoughts out there for this rookie?
Thanks
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
catsltd
post Jul 15 2016, 01:55 PM
Post #3


Member
**

Group: Members
Posts: 181
Joined: 7-June 15
From: Calgary Alberta
Member No.: 18,814
Region Association: None



QUOTE(djway @ Jul 15 2016, 02:12 PM) *

Since I have your attention (IMG:style_emoticons/default/smile.gif) After putting in the CHT and adjusting the AFS wiper the car idled fine and stopped belching smoke. The next afternoon I put a timming light on it just to confirm advance before taking for a longer drive. Now the car idles around 600 rpm and the adjustment on the throttle body wont bring it up much at all and there is a bit of smoke again.
I did tear apart and reassemble the throttle body and I am thinking I may have the butterfly in a bit off. Full disclosure about a week ago I knew nothing about FI or L-Jet or even how to use a multimeter. Luckily I learn rapidly and was able to get it running again but lack of experience in a hindrance in knowing which spot to look.
I did have some mean backfires the first day I worked on it so I guess that could have damaged something.
If I am not successful with the throttle body, what else should I do?

List so far.
Multi vacuum tube leaks and tear in boot repaired. No more can be found.
Timing correct.
Valves correct.
All 5 injectors pulled and left under pressure for several hours, no leaks.
All 5 injectors have proper resistance. The 4 in the heads at 3 ohm and the cold start valve at 4 ohm.
Fuel pump operates correctly and at proper pressure, a steady 36lbs.
Full throttle switch operates properly.
Aux air valve closes and re opens but I am not sure if it opens completely as I have never looked at another for comaprison.
Timed thermal sensor is giving the proper resistance signal, and again cold start valve not squirting when it should not.
The car accelerates properly and manual movement of the AFS sensor does not help idle.
All I can think of is I did something a little off in the throttle body. I can manually open it slightly and it idles fine. If there were an idle screw I would be OK right now, theoretically. I can create a small vacuum leak and it idles right up.
Any other thoughts out there for this rookie?
Thanks

I took my 74/1.8L to a shop for timing and valve adjustment,car was quiter but had no power.
Finally did my own timing and valve adjustment car runs like a top.
Just my 2 cents.
Car also uses much less oil,and no more smoke out the exhaust.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post

Posts in this topic
djway   1.8 CHT sensor   Jul 12 2016, 04:49 PM
Dave_Darling   The D-jet ones should work, at least to some exten...   Jul 12 2016, 04:55 PM
djway   The D-jet ones should work, at least to some exte...   Jul 12 2016, 05:04 PM
Big Len   Does this help? It's.....gulp, Auto Atlanta ...   Jul 12 2016, 05:26 PM
djway   Does this help? It's.....gulp, Auto Atlanta...   Jul 12 2016, 05:57 PM
The Cabinetmaker   http://www.bughaus.com/type_4_fuel_injectors_and_s...   Jul 12 2016, 05:51 PM
djway   http://www.bughaus.com/type_4_fuel_injectors_and_...   Jul 12 2016, 05:58 PM
jim_hoyland   Try a VW shop that's servicing buses....virtua...   Jul 12 2016, 06:40 PM
914Sixer   What is the part #? The bughaus page is showing ...   Jul 12 2016, 06:42 PM
djway   What is the part #? The bughaus page is showing...   Jul 12 2016, 09:22 PM
MarkV   http://www.ebay.com/itm/Porsche-Sensor-Cyl...kex...   Jul 12 2016, 11:46 PM
djway   http://www.ebay.com/itm/Porsche-Sensor-Cyl...kex...   Jul 13 2016, 03:23 AM
RohJay   [quote name='MarkV' post='2370833' date='Jul 12 2...   Jul 14 2016, 12:14 AM
saigon71   [quote name='MarkV' post='2370833' date='Jul 12 ...   Jul 14 2016, 07:02 AM
jcd914   Not to say that you don't need a CHT sensor bu...   Jul 13 2016, 12:45 AM
djway   Not to say that you don't need a CHT sensor b...   Jul 13 2016, 03:22 AM
djway   I have a bad head temperature sensor on my 1974 1...   Jul 13 2016, 12:46 AM
The Cabinetmaker   After hours of searching I finally found a place ...   Jul 15 2016, 04:51 PM
djway   Well, I ordered under that new part number and gue...   Jul 13 2016, 04:51 PM
914Sixer   I do not understand what happened to all the senso...   Jul 13 2016, 08:37 PM
Keith914   I have one recently removed from my '72, Yours...   Jul 13 2016, 08:56 PM
McMark   $30 I'll send you one of my custom ones t...   Jul 13 2016, 09:46 PM
djway   $30 I'll send you one of my custom ones ...   Jul 13 2016, 11:31 PM
Mikey914   $30 I'll send you one of my custom ones ...   Jul 14 2016, 12:24 AM
djway   $30 I'll send you one of my custom ones ...   Jul 17 2016, 01:11 AM
jim_hoyland   See:. http://www.ratwell.com/technical/TempSensorI...   Jul 14 2016, 06:31 PM
McMark   The stock sensor is some spring based variable res...   Jul 15 2016, 08:24 AM
Mueller   The stock sensor is some spring based variable re...   Jul 15 2016, 09:09 AM
McMark   Hey Mark, Can this sensor be used with Megasquir...   Jul 15 2016, 10:34 AM
djway   The stock sensor is some spring based variable re...   Jul 15 2016, 11:52 AM
Jeff Bowlsby   Which reminds me, I'd need core sensors to bu...   Jul 17 2016, 08:53 AM
McMark   Which reminds me, I'd need core sensors to bui...   Jul 17 2016, 09:27 AM
stugray   M10x1.00 bolts aren't easy to find, although...   Jul 17 2016, 11:25 AM
stugray   connect the sensor wire to the input of a switch w...   Jul 15 2016, 10:02 AM
Marty Yeoman   I like the way you think.   Jul 15 2016, 10:18 AM
djway   Since I have your attention :) After putting in ...   Jul 15 2016, 12:12 PM
catsltd   Since I have your attention :) After putting in...   Jul 15 2016, 01:55 PM
76-914   I'm of no help as I don't know LJet but I ...   Jul 15 2016, 02:26 PM
914_teener   I'm of no help as I don't know LJet but I...   Jul 15 2016, 03:18 PM
djway   I'm of no help as I don't know LJet but ...   Jul 15 2016, 03:54 PM
914_teener   [quote name='914_teener' post='2371901' date='Jul...   Jul 15 2016, 04:58 PM
djway   I'm of no help as I don't know LJet but I...   Jul 15 2016, 03:53 PM
McMark   Worked from 7am to 10:30pm yesterday. Just replie...   Jul 17 2016, 07:55 AM
catsltd   Worked from 7am to 10:30pm yesterday. Just repli...   Jul 17 2016, 08:16 AM


Reply to this topicStart new topic
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:

 



- Lo-Fi Version Time is now: 19th May 2024 - 01:02 AM