 No idle - '74 2.0l FI |
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| watsonrx13 |
 Jan 17 2011, 06:55 AM
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Advanced Member  Group: Members Posts: 2,735 Joined: 18-February 03 From: Plant City, FL Member No.: 312 Region Association: South East States  |
Since I've rebuilt my '74 2.0l FI engine I've had problems with the car not idling. After it warms up it dies. I've set the timing to 27 and the dwell is at 46. I tried adjusting the ECU knob and the air idle screw but neither appear to have any effect on the idle. When I adjust the knob I can feel it click. I counted 21 total clicks. The engine runs great above idle. The injectors have been rebuilt, new AA vacuum hoses replaced, all gaskets are new.
Can the ECU be taken apart and cleaned? Does anyone have a pic of the ECU opened up showing the knob area? Any recommendations on how to fix the idle problem I'm having? -- Rob |
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| detoxcowboy |
Jan 18 2011, 12:23 AM
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Senior Member Group: Members Posts: 1,294 Joined: 30-January 08 Member No.: 8,642 Region Association: Africa |
QUOTE(watsonrx13 @ Jan 17 2011, 04:55 AM)  Since I've rebuilt my '74 2.0l FI engine I've had problems with the car not idling. After it warms up it dies. I've set the timing to 27 and the dwell is at 46. I tried adjusting the ECU knob and the air idle screw but neither appear to have any effect on the idle. When I adjust the knob I can feel it click. I counted 21 total clicks. The engine runs great above idle. The injectors have been rebuilt, new AA vacuum hoses replaced, all gaskets are new. Can the ECU be taken apart and cleaned? Does anyone have a pic of the ECU opened up showing the knob area? Any recommendations on how to fix the idle problem I'm having? -- Rob Just a heads up.. One Click at a time and wait for the response, do it when the car has been drivin for 20-30 minutes. ect.. -The air bleed screw will have no effect if your mixture is too lean, -Your car will want to die the more it is warmed up if your mixture is too rich.. were are talking excessive adjustment but it is easy to get lost, and also being incremental and making sure your adjusting only when your car is fully warmed up, 20-30 minutes driving, not idling in your drive way.. plus if you have another minor issue going on it is possible to adjust masking that issue but causing really poor adjustment.. side not on this extremely valuable link, he is getting a cold idle of 1700 rpm before it is warmed up, and i am yet to ever have that high of an idle.. I go from about 1200rpm start up in so. cal. temps, but was getting 1500 in below freezing in WA... my aar is good in fact I have a couple very sweet ones and they both respond exactly the same.. Anyway this link will learn you the d-jet and once you do that, Your Golden! The writer is Pbanders a 914 world meber also.. There is more about the ecu in this site than you ever want to know.. Linky... http://members.rennlist.com/pbanders/ |
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Posts in this topic
watsonrx13 No idle - '74 2.0l FI Jan 17 2011, 06:55 AM
gasman First check that the AAR is fully closed when warm... Jan 17 2011, 10:11 AM r_towle I would agree that something else it wrong.
The kn... Jan 17 2011, 10:16 AM Jeffs9146
Check your CHTS (Cylinder Head Temp Sensor) This... Jan 17 2011, 10:20 AM jsayre914 Vacume leak?? Check all the hoses are tight and ma... Jan 17 2011, 11:33 AM watsonrx13 So if I read Brad website correctly I need a 0 280... Jan 17 2011, 11:57 AM
Krieger
So if I read Brad website correctly I need a 0 28... Jan 17 2011, 12:27 PM messix oil fill cap not tight? Jan 17 2011, 01:15 PM r_towle Here is how I go about this...and it works.
Unplug... Jan 17 2011, 02:24 PM SLITS Make sure the knob is in the middle of the range .... Jan 17 2011, 08:26 PM detoxcowboy I also have a 74 2.0, :agree: there is another pr... Jan 18 2011, 11:07 AM watsonrx13 I was finally able to work on the car this weekend... Jan 31 2011, 05:23 PM sfrenck
I was finally able to work on the car this weeken... Jan 31 2011, 06:12 PM Spoke
I took the car out for a quick drive and didn... Feb 1 2011, 10:55 AM detoxcowboy
I took the car out for a quick drive and didn... Feb 1 2011, 11:33 AM watsonrx13 more pics..
Here's how I tested the AAR..... Jan 31 2011, 05:24 PM Jeffs9146 I still vote for CHTS!!!! Jan 31 2011, 05:51 PM detoxcowboy CHT Value and issue,
Function: Senses engine tem... Jan 31 2011, 06:19 PM watsonrx13 Thanks guys. I also believe it appears to be a pro... Jan 31 2011, 07:19 PM Jeffs9146
It is not hard but be very carefull not to cross... Jan 31 2011, 07:43 PM underthetire
It is not hard but be very carefull not to cros... Feb 1 2011, 10:04 AM brenz
It is not hard but be very carefull not to cros... Feb 1 2011, 11:34 AM Spoke One simple test you can do to make sure your CHT i... Feb 1 2011, 05:58 AM detoxcowboy 74 2.0 does not use the "missing" advanc... Feb 1 2011, 08:11 AM detoxcowboy From the link I posted further up this post..
Th... Feb 1 2011, 11:31 AM watsonrx13 OK guys the engine started right up and is now idl... Feb 1 2011, 04:46 PM Jeffs9146 :first: :first: :first: :first:
I win!... Feb 1 2011, 07:02 PM detoxcowboy :hard: done, It's over! Congrats! CHT ... Feb 1 2011, 07:57 PM |
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