 74 2.0L, Running Very Rich, owner quite confused, need diagnostic help |
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| drumsticks2112 |
 Sep 20 2009, 12:56 PM
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#1
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Newbie  Group: Members Posts: 7 Joined: 29-October 08 From: New London Member No.: 9,704 Region Association: Upper MidWest  |
Car fires without a problem, but idles quite rough, and runs very rich, so much so that when the it settles down to normal idles, it floods out. MPS was replaced with a used but tested one recently. When it was last running ( a year ago) it ran a little rich, but nothing like this.
As of now, the CHT is not connected. When it is connected, the RPMs jump up to 4000 and stay there. When the CHT is bypassed with direct grounding of the harness, the results are the same as with the sensor being disconnected. I have no reason to suspect the injectors, FPR, Decel Valve, or the MPS. Any and all advice is welcome. -Todd |
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| tod914 |
Sep 23 2009, 10:26 PM
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#2
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Advanced Member Group: Members Posts: 3,755 Joined: 19-January 03 From: Lincoln Park, NJ Member No.: 170 |
Compliments of Dave. http://www.pelicanparts.com/914/technical_...4_20FI_diag.htm
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| drumsticks2112 |
Sep 23 2009, 10:58 PM
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#3
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Newbie Group: Members Posts: 7 Joined: 29-October 08 From: New London Member No.: 9,704 Region Association: Upper MidWest |
QUOTE(tod914 @ Sep 23 2009, 11:26 PM)  Excellent! Thank you, I will get right to work. -Todd |
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Posts in this topic
drumsticks2112 74 2.0L, Running Very Rich, owner quite confused Sep 20 2009, 12:56 PM
type47 I thought the CHT had to be connected to run; must... Sep 20 2009, 04:12 PM Rand Running that rich makes me suspect the MPS (even t... Sep 20 2009, 04:18 PM Dave_Darling Disconnecting the CHT will send the mixture very r... Sep 20 2009, 04:53 PM pilothyer I didn't think an open CHTS would allow the ca... Sep 20 2009, 05:15 PM underthetire I had a CHT go bad. Went open when hot. Biatch to ... Sep 21 2009, 10:04 AM CHAZT54 I am working with drumsticks on this car and have ... Sep 23 2009, 12:41 PM
greenie
I am working with drumsticks on this car and have... Sep 23 2009, 07:41 PM
Dave_Darling ...At the same time I connected the hd temp sensor... Sep 23 2009, 08:51 PM tod914 Did you actually test the MPS to see if it holds v... Sep 23 2009, 07:56 PM drumsticks2112
Did you actually test the MPS to see if it holds ... Sep 23 2009, 10:09 PM Bleyseng does sound like a vacuum leak of misplaced hose to... Sep 23 2009, 10:07 PM CHAZT54
[quote name='tod914' post='1218012' date='Sep 23 ... Sep 30 2009, 12:47 PM Van914 Did you check the adjustment on the FI Brain. I us... Sep 30 2009, 01:13 PM rjames
Did you check the adjustment on the FI Brain. I u... Sep 30 2009, 01:36 PM drumsticks2112 Thanks for the additional ideas guys, here is the ... Sep 30 2009, 04:22 PM r_towle Start at the beginning.
Remove EVERY vacuum line f... Sep 30 2009, 03:39 PM Rand Like Dave said, idle that fast means there HAS to ... Sep 30 2009, 03:39 PM r_towle no idea what an FPS is nor a TVS.
The MPS does not... Sep 30 2009, 04:33 PM drumsticks2112
no idea what an FPS is nor a TVS.
The MPS does no... Sep 30 2009, 09:57 PM Dave_Darling The MPS has a mechanical component. If you shake ... Sep 30 2009, 11:11 PM CHAZT54 OK - we took your advice and dismantled the intake... Oct 2 2009, 07:52 AM r_towle There is no fuel pressure sensor...a fuel pressure... Oct 2 2009, 01:13 PM CHAZT54
There is no fuel pressure sensor...a fuel pressur... Oct 2 2009, 03:42 PM CHAZT54
There is no fuel pressure sensor...a fuel pressu... Oct 5 2009, 12:21 PM r_towle
[quote name='CHAZT54' post='1221175' date='Oct 2 ... Oct 5 2009, 04:48 PM CHAZT54
[quote name='CHAZT54' post='1221175' date='Oct 2... Oct 6 2009, 07:47 AM r_towle
[quote name='r_towle' post='1222305' date='Oct 5 ... Oct 6 2009, 01:18 PM r_towle You will need an inline gauge to confirm how the F... Oct 2 2009, 04:51 PM Rand I just pulled the line off the CSV and plugged it.... Oct 6 2009, 10:52 AM CHAZT54 EUREKA!!
It finally runs & idles norma... Oct 8 2009, 12:27 PM |
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