Zoaholic Posted October 1, 2024 Report Share Posted October 1, 2024 I've noticed that after daily driving my truck the throttle lever on the carb doesn't like to go back to its resting position, it ends up idling at around 1.5k ish despite me having the idle at 800. Whenever it's idling that high I can move the lever back physically and I see that it's slightly outwards instead of it resting how its supposed to. How do I make the lever always go to its resting position instead of it getting stuck? Quote Link to comment
datzenmike Posted October 1, 2024 Report Share Posted October 1, 2024 Couple of things could be the problem 1/ Find the electric choke heater pictured above. It should have a blue wire going to it. (it will have a black colored sheath covering it) If you have a meter fine, if not get a $5 test lamp... Test for power but only with the engine running. Lack of power when there should be some will cause the choke to not open fully and the fast idle cam may be engaged. 2/ Spray everything below the choke heater with WD-40 and move the linkages to loosen and lubricate them. Specially this thing... Quote Link to comment
Thomas Perkins Posted October 1, 2024 Report Share Posted October 1, 2024 (edited) What your problem is your lock nut is too tight.It is not allowing your throttle to go back all the way.What you need to do is,get a flat head screw driver and bend down your washer tab at nut ,this keeps your nut from moving.Then get a pair of pliers to hold throttle so it won't move, then loosen nut a hair,Then bend tab back to secure nut,adjust nut as needed to get throttle to move back to your set point.Don't loosen nut too much,then spray with W.D.-40,also spray your fast idle linkage too.This was my problem long ago.Here is the nut and washer with tab.I have extra nuts and tabs. Edited October 1, 2024 by Thomas Perkins Quote Link to comment
Thomas Perkins Posted October 1, 2024 Report Share Posted October 1, 2024 (edited) Here is a picture of it.I just took this picture.I had to turn my phone up side down to take the picture's.I also use a Pioneer throttle cable.Stock one went bad long ago. Edited October 1, 2024 by Thomas Perkins Quote Link to comment
Thomas Perkins Posted October 1, 2024 Report Share Posted October 1, 2024 (edited) I've had this Weber for over 8 years and never had a problem with anything but the gaskets need changing yearly.In time you will see fuel stains around the gaskets.I have a boat load of them.I do check the top screws often.And the bottom 4.I clean the filter with Dawn.As I just seen,the back of my Weber is dirty.Which means time to take Weber off and install new gaskets and clean it.The inside stays clean. Edited October 1, 2024 by Thomas Perkins Quote Link to comment
Seven Two Oh No Posted October 2, 2024 Report Share Posted October 2, 2024 If it's still sticking after you've sorted the choke and linkages as described above, the throttle shaft bushings may be worn out and causing some grief. I replaced mine with bearings (8x12x3.5mm like these: https://www.amazon.com/gp/product/B07TJQZBMX), which made the throttle action much smoother. 1 Quote Link to comment
Thomas Perkins Posted October 2, 2024 Report Share Posted October 2, 2024 Is your cable to tight?0 Quote Link to comment
Stinky Posted October 2, 2024 Report Share Posted October 2, 2024 Look at your choke....as mentioned. My guess is that it is not warning up and the spring is not relaxing, and that it is always in cold-start mode. Quote Link to comment
Zoaholic Posted October 4, 2024 Author Report Share Posted October 4, 2024 The weber is fairly new. Sprayed and lubricated all of my linkages and pretty much everything. I've been driving it since I made this post and I think it just needed a little lubrication... I'll still look into loosening the lock nut, at times the throttle will get stuck around 1000 but it does rest eventually. I appreciate you all 1 Quote Link to comment
Thomas Perkins Posted October 4, 2024 Report Share Posted October 4, 2024 Don't touch the choke. Quote Link to comment
NC85ST Posted October 5, 2024 Report Share Posted October 5, 2024 Is the cable operating smoothly? Quote Link to comment
Zoaholic Posted October 7, 2024 Author Report Share Posted October 7, 2024 So now I've got an even bigger issue that happened last night... Before I explain what happened, I haven't loosened anything or tampered with any of the linkages or the choke. I was driving on the highway for around 40 minutes straight and as I'm going around 75 mph my truck sort of "stuttered" and sort of stopped throttling for a very short burst amount of time. So I decide to slow down a little bit before I probably crash and die, and then I ran into some traffic and as I was going around 10 mph going in and out of natural since it was pretty heavy traffic then the truck decides to die on me. I start her back up and I notice the pedal is completely loose and it is no longer throttling at all, the truck dies shorty after I start it so I stop at the side of the road and I notice the throttle cable isn't going in or out, when I push the linkage it goes out like how it's supposed to but the cable doesn't budge. Only thing I've tried is applying carb cleaner and WD-40 but the cable still isn't moving. Quote Link to comment
Crashtd420 Posted October 7, 2024 Report Share Posted October 7, 2024 Sounds like the cable got stuck and snapped inside.... Time for a new cable. . Quote Link to comment
Thomas Perkins Posted October 7, 2024 Report Share Posted October 7, 2024 If you need a cable,get a pioneer brand.What I use. Quote Link to comment
Zoaholic Posted October 7, 2024 Author Report Share Posted October 7, 2024 2 hours ago, Thomas Perkins said: If you need a cable,get a pioneer brand.What I use. https://www.summitracing.com/parts/pio-ca-8889 Would this be the correct fit? Quote Link to comment
NC85ST Posted October 7, 2024 Report Share Posted October 7, 2024 That was the reason for the question I asked earlier, cable going bad. Quote Link to comment
Crashtd420 Posted October 7, 2024 Report Share Posted October 7, 2024 48 minutes ago, Zoaholic said: https://www.summitracing.com/parts/pio-ca-8889 Would this be the correct fit? That listing says for the 240sx and is 49 or so inches long.... https://www.summitracing.com/parts/pio-ca-8730/make/nissan/model/720/year/1985 This listing is for a 85 720... Cable is only 36 inchs... so might not be right... Quote Link to comment
Crashtd420 Posted October 7, 2024 Report Share Posted October 7, 2024 And the ends are different.... Pull yours out Check the ends and length... Quote Link to comment
Zoaholic Posted October 7, 2024 Author Report Share Posted October 7, 2024 I'll take out the cable to measure the length once I'm home, although what would cause the cable to go bad? Quote Link to comment
Crashtd420 Posted October 7, 2024 Report Share Posted October 7, 2024 (edited) 13 minutes ago, Zoaholic said: I'll take out the cable to measure the length once I'm home, although what would cause the cable to go bad? Was this a new part ? If it was old I would say just time.... Probably moisture and rust .... Even an incorrect lubricant could cause it.... Edited October 7, 2024 by Crashtd420 Quote Link to comment
Thomas Perkins Posted October 7, 2024 Report Share Posted October 7, 2024 (edited) PIoneer Ca-8730.Auto Zone has them for 48.99,cheaper than Rock Auto Parts cause you have to pay shipping.I have one on my 85 and a spare.Don't lube them.You will have to order it.Do you have the clip that holds it to the firewall? Edited October 7, 2024 by Thomas Perkins Quote Link to comment
Thomas Perkins Posted October 7, 2024 Report Share Posted October 7, 2024 Here are some pictures I just took of my PIoneer throttle cable on my truck and my spare.Both came from Auto Zone. Quote Link to comment
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