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![]() Enthusiast ![]() ![]() ![]() ![]() ![]() Joined Feb 7, '07 From Portland, Oregon Currently Offline Reputation: 67 (96%) ![]() |
I'm still having weird engine issues. It was bucking really bad until warm up, especially in higher RPMs. I did a tune-up which helped but didn't solve it, engine would still buck while cold at higher RPMs (3000+), and at about 3500+ when warmed up. Fiddled around some more this weekend, resulting in amazing improvement; now instead of bucking, it just kind of feels like it's dragging like a dog scraping its butt on the carpet. Yes, at higher RMPs, and regardless of what gear I'm in. I've done the following thusfar to resolve this issue:
•replaced thermostat •replaced engine temp sensor •replaced plugs, cap & rotor, air filter (improvement #1) •replaced fuel filter •seafoam gas treatment, seafoam vacuum line (discovered leak in gasket around header pipes) ![]() •removed intake housing, cleaned the hell out of throttle body/plate •realized that did nothing, REMOVED throttle body, discovered diamond mine in carbon deposits, cleaned thoroughly including all those tiny little vacuum tentacles ![]() •whatever that thing is called (is it just the intake?) that the throttle body is attached to, well I sprayed the HELL out of it and soaked a rag too and did my best to clean it out. It looked like a stalactite cavern. Result was a marked increase in throttle response, made my car feel young again. But still dragging ass on 3000+ RPMs regardless of gear. What is that thing the throttle body attaches to? Should I attempt to remove the cover from it so I can get rid of the rest of all that carbon build up? Is that my problem? Does anyone have any other ideas? PLEASE? Thanks... -------------------- ![]() |
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![]() Enthusiast ![]() ![]() ![]() ![]() ![]() Joined Feb 7, '07 From Portland, Oregon Currently Offline Reputation: 67 (96%) ![]() |
I had no idea there was a fuel filter in the gas tank. Where the hell is it and how do I get to it? And why haven't I ever heard of it before!? But yes, I did change the one under the hood. (Boy that sucked. The bottom nut was really really tight.)
I'll try the thing with the vacuum lines, it certainly can't hurt. I did spray the ports that are on the throttle body though, I even discovered that if not careful, you can actually shoot that tiny straw INTO your intake manifold. Luckily I have small hands, a small flashlight, long needle nose pliers and a bit of luck. As for the cat, I didn't even think of that. It too could cause my car to run pretty crappy, couldn't it? Is that something I can have a muffler shop do a back-pressure test for? I know a very good shop nearby who might be willing to do that. Is it worth checking into? -------------------- ![]() |
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Lo-Fi Version | Time is now: July 24th, 2025 - 6:29 AM |