 How test/inspect 2.0L DJet throttle body before swapping it in? |
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| Tdskip |
 Mar 16 2022, 07:05 PM
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Advanced Member  Group: Members Posts: 3,686 Joined: 1-December 17 From: soCal Member No.: 21,666 Region Association: None 
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Hi - the '75 DJet car has a stumble that happens at a couple points in the rev range and at certain RPMs when the throttle is held constant. It rarely happens when the throttle is being exercised up/down the RPM range (like accelerating through turns etc).
I'm thinking worn throttle body "fingers" or the trace pad they travel against (yeah, wrong terms I know) but I believe this could also (maybe) be a sticky advance weight in the distributor. Any why to test the spare throttle body so I don't swap out the wrong thing? OR Should I just pull and open the plastic cover on the one I have to see what is up? Doesn't look that hard to remove it. What say you gentlemen, and please do liberally apply terminology dope slaps. Thanks! |
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| DRPHIL914 |
Mar 17 2022, 08:08 AM
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Dr. Phil Group: Members Posts: 5,769 Joined: 9-December 09 From: Bluffton, SC Member No.: 11,106 Region Association: South East States
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QUOTE(Tdskip @ Mar 16 2022, 09:05 PM)  Hi - the '75 DJet car has a stumble that happens at a couple points in the rev range and at certain RPMs when the throttle is held constant. It rarely happens when the throttle is being exercised up/down the RPM range (like accelerating through turns etc). I'm thinking worn throttle body "fingers" or the trace pad they travel against (yeah, wrong terms I know) but I believe this could also (maybe) be a sticky advance weight in the distributor. Any why to test the spare throttle body so I don't swap out the wrong thing? OR Should I just pull and open the plastic cover on the one I have to see what is up? Doesn't look that hard to remove it. What say you gentlemen, and please do liberally apply terminology dope slaps. Thanks! @Tdskip the stumble is either just loss of contact due to dirty contacts or wear. you might just have to clean off the contacts and the board, the board will clean off with an eraser, it will look like its worn but might not be. But if a new board is needed replacements are available, Dave Sprinkle makes them and 914rubber carries them. then setting the alignment of it is pretty simple. Phil |
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Posts in this topic
Tdskip How test/inspect 2.0L DJet throttle body before swapping it in? Mar 16 2022, 07:05 PM
emerygt350 Go ahead and pull the tps cover and check it out. ... Mar 16 2022, 08:34 PM Dustin This page has links to two articles about testing ... Mar 17 2022, 05:11 AM Tdskip Thanks for the respsones.
Found this earlier whic... Mar 17 2022, 08:07 AM Lockwodo
Hi - the '75 DJet car has a stumble that happ... Mar 17 2022, 08:08 AM Jett We had the same symptoms with our 73 2.0 stumbling... Mar 17 2022, 08:58 AM Tdskip Took the cover off the spare one that I had and th... Mar 17 2022, 11:32 AM GregAmy The board is, what, $50?
Just replace it. Mar 17 2022, 12:06 PM rjames The board definitely looks worn, but it's also... Mar 17 2022, 12:53 PM
Tdskip Thanks for all of the response and information.
F... Mar 17 2022, 05:40 PM |
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