Lawrence71 Posted June 21, 2022 Share Posted June 21, 2022 Hi folks, Just took the Monte out for a ride after doing a variety of work (mainly ignition system but also an oil change); had been doing slow speed in town today with no issues, but tonight was showing the car off to some friends so got it up to 55ish with high rpm’s (aka punching it) and noticed the engine was running very high and was hard to slow down. It seemed like it wasn’t backing down on the gears after I got up to third. Even when I slowed down it revved high and taking my foot off the brake it would drive as if I’d had the throttle held. It took a lot of pressure to ensure that the car wouldn’t move forward while trying to slowly park back in the garage. Any ideas on what I should start taking a look at or likely culprits? Thanks, David Quote Link to comment Share on other sites More sharing options...
Dtret Posted June 21, 2022 Share Posted June 21, 2022 Check the spring on the throttle, throttle cable may be hanging up frayed inside the sleeve, stupid as this sounds- did you check the floor mat( ask me how I know that). 7 Quote Link to comment Share on other sites More sharing options...
Searsman Posted June 21, 2022 Share Posted June 21, 2022 I agree I th what Dennis said, based on past experience 😆 Quote Link to comment Share on other sites More sharing options...
Searsman Posted June 21, 2022 Share Posted June 21, 2022 Also, some carb linkage could have come loose when you put the pedal to the metal ,not allowing throttle to disengage... especially since you were doing ignition work close to that area.. some to check .... 1 Quote Link to comment Share on other sites More sharing options...
Scott S. Posted June 21, 2022 Share Posted June 21, 2022 Grit in the carb might do this too..... I'd been driving on a lot of dusty roads in a work truck years ago, and when I got back to the highway and opened up on the throttle, it stuck and scared the s*** out of me. Had to shut it down in neutral to get control of it. Cleaned up the carb, but it was never the same after that. 1 Quote Link to comment Share on other sites More sharing options...
EVC Posted June 21, 2022 Share Posted June 21, 2022 20 hours ago, Dtret said: Check the spring on the throttle, throttle cable may be hanging up frayed inside the sleeve, stupid as this sounds- did you check the floor mat( ask me how I know that). I agree with Dennis… This spring on mine was reversed during some routine maintenance and was periodically hanging up on the idle adjustment screw to the left. Naturally it wasn't his fault,,, so I took it back and showed him. I simply flipped the spring over and problem solved …. Hope your problem is as simple as that. Ed c. Quote Link to comment Share on other sites More sharing options...
Lawrence71 Posted June 21, 2022 Author Share Posted June 21, 2022 Here is a wide view of things as they stand the top piece appears to be the throttle cable and the second green linkage is what the spring is attached to I am not sure what that is however. (There is a manual choke on the other side and that also feels to be a little stuck, though I wasn’t messing with the carb directly.) One thing I notice is that the spring seems to get caught on some piece of the linkage when it is pulled all the way in. I assume there should be some better clearance there? Could be that was what happened if the spring actually got stuck I suppose. Also it appears that the this cable plastic piece has broken somewhat: Well, whatever that mystery cable is. In any case that being broken is probably bad. Any help in identifying that part? Thanks, David Quote Link to comment Share on other sites More sharing options...
EVC Posted June 21, 2022 Share Posted June 21, 2022 That mystery cable is your tranny throttle position cable. (Kick down cable) Your spring looks like it's definitely hanging up .. I placed my spring on the front. I'll send another pic to show how it's hooked up …. I'm hoping someone else can help you on the TPS cable,,, but it looks out of adjustment or broken from your photo. Ed Quote Link to comment Share on other sites More sharing options...
EVC Posted June 21, 2022 Share Posted June 21, 2022 David.. here is my set up with Edlebrock and a 700r4 tranny.. Looks like that spring is your problem.. Your kick down cable looks broken too. Ed. Quote Link to comment Share on other sites More sharing options...
EVC Posted June 21, 2022 Share Posted June 21, 2022 David On second look at that kick down cable (green).. It looks broken to me. This is a big part of the problem or part of it now and may account for the reason it wouldn't shift back ... Ed Quote Link to comment Share on other sites More sharing options...
EVC Posted June 21, 2022 Share Posted June 21, 2022 David From the photo , the geometry may be wrong for the arm on the carb… Edlebrock may have a throttle arm kit that you can order. The Edlebrock arm, like I have on mine is the proper geometry for my 700r4… I think it's ordered transmission specific… Ed.. Quote Link to comment Share on other sites More sharing options...
MC1of80 Posted June 21, 2022 Share Posted June 21, 2022 Kick down cable is obviously broken. That is not the issue for the original problem. Reposition the return spring to where there is NO interference with the throttle linkage. PEOPLE! Install 2 return springs! If and or when one breaks, you will not have a stuck open throttle. A little insurance. 5 Quote Link to comment Share on other sites More sharing options...
EVC Posted June 22, 2022 Share Posted June 22, 2022 28 minutes ago, MC1of80 said: Kick down cable is obviously broken. That is not the issue for the original problem. Reposition the return spring to where there is NO interference with the throttle linkage. PEOPLE! Install 2 return springs! If and or when one breaks, you will not have a stuck open throttle. A little insurance. PEOPLE …. ? Thanks for the insight Tom … Quote Link to comment Share on other sites More sharing options...
MC1of80 Posted June 22, 2022 Share Posted June 22, 2022 Would EVERYONE have been better? Lolol Quote Link to comment Share on other sites More sharing options...
EVC Posted June 22, 2022 Share Posted June 22, 2022 7 minutes ago, MC1of80 said: Would EVERYONE have been better? Lolol Thanks for your mentoring. Quote Link to comment Share on other sites More sharing options...
Dtret Posted June 22, 2022 Share Posted June 22, 2022 Take the back of the spring, by the coil , and put it in the small hole on the same bracket it’s already attached to. Take the front of the spring, by the throttle linkage, and put it in the lower hole on the linkage. After it’s hooked up, car not running, about the throttle linkage and make sure it snaps back to huddle closed position. You may need a different spring to accomplish this, and yes double spring it, gm did it that way for a reason. Also remove the kick down cable (green one) from the throttle linkage for this test. As it currently sits that spring is messing with the linkage. I’m going now, I have to go find my other spring. Lol. I only have one and I know better then that. Thanks for the reminder Tom. Another thing to do before Carlisle. 1 Quote Link to comment Share on other sites More sharing options...
Lawrence71 Posted June 22, 2022 Author Share Posted June 22, 2022 Lucky for me I get to blame the last guy who owned it. Unlucky for me I get to clean up his messes. (Lucky for me this time I’m not the last guy.) Will see about adding the proper springs in the proper places. Is there some variety pack of springs and what kind of tension should you feel when it’s in the pulled back state? 1 Quote Link to comment Share on other sites More sharing options...
Dtret Posted June 22, 2022 Share Posted June 22, 2022 Most of the parts stores will carry a double spring set, or used to. The spring feel is going to be up to you. The gas pedal will tell you. Some people like a hard pushing pedal, some don’t. I like a easy pushing pedal. 1 Quote Link to comment Share on other sites More sharing options...
EVC Posted June 22, 2022 Share Posted June 22, 2022 I'll be changing mine out too…. I found some double springs on Amazon last night , but will go to a local store to make sure of the size… Dorman has a nice collection. Ed Quote Link to comment Share on other sites More sharing options...
Lawrence71 Posted June 22, 2022 Author Share Posted June 22, 2022 Dumb question: since this is an aftermarket carb will what the parts stores have in their computer even be relevant? Quote Link to comment Share on other sites More sharing options...
cny first gen 71 Posted June 22, 2022 Share Posted June 22, 2022 38 minutes ago, Lawrence71 said: Dumb question: since this is an aftermarket carb will what the parts stores have in their computer even be relevant? Probably not, aftermarket stuff has to be matched up usually. Quote Link to comment Share on other sites More sharing options...
Dtret Posted June 22, 2022 Share Posted June 22, 2022 3 hours ago, Lawrence71 said: Dumb question: since this is an aftermarket carb will what the parts stores have in their computer even be relevant? They should have a hanger board in the showroom. Just look for the springs. Remember if it’s not in the computer they don’t have it. Quote Link to comment Share on other sites More sharing options...
Scott S. Posted June 22, 2022 Share Posted June 22, 2022 Spring tension is a matter of preference...... As long as it's got a close length,(depending on which configuration you use), the feel of the pedal resistance will /can be what makes you decide what you like. P.S. The more springs you add, the more the resistance as well. Quote Link to comment Share on other sites More sharing options...
Dtret Posted June 22, 2022 Share Posted June 22, 2022 The length has to be correct. The strength of the spring depends on the thickness of the actual spring winding. Quote Link to comment Share on other sites More sharing options...
Scott S. Posted June 23, 2022 Share Posted June 23, 2022 Agreed..... If you're going the factory stock way. But with all the aftermarket versions and having multiple settings on these pieces, it becomes a matter of finding what feels comfortable. Quote Link to comment Share on other sites More sharing options...
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