318Touring 40 Report post Posted May 18, 2019 (edited) Posted in the off-topic because this is for my '05 Suzuki Swift. In the past few months, it's been exhibiting the following symptoms: when cold, idle RPM would be at 1400-ish also when cold, when the gas pedal is floored power delivery would be somehow interrupted. The only way to get power is to let off and push the gas pedal again when idling from cold it'll judder with the RPM oscillating accordingly when warm, sometimes, pushing the gas pedal doesn't deliver any additional power. The remedy is to let off and push the gas pedal again Took it to the garage this morning, it was already warm, and they couldn't replicate the issue. They said that it might electrical (hence the title of this post). I've replaced spark plugs, O2 sensor, oil and filter, air filter and cleaned the throttle body. It' not throwing any code. Any idea? I could always replace the MAF but it now feels throwing parts at a problem (or a bunch of problems) that I don't understand. Edited May 18, 2019 by 318Touring No code Quote Share this post Link to post Share on other sites
Jacko 2154 Report post Posted May 18, 2019 (edited) Throttle Position Sensor or Idle Control Valve? (I know nothing about the engines, and if they even run a TPS or ICV) That would be what I would be looking at. Could even be an vacuum leak. Whats a scan say? Edited May 18, 2019 by Jacko Quote Share this post Link to post Share on other sites
Eagle 1662 Report post Posted May 18, 2019 Tried running with the MAF disconnected>? Quote Share this post Link to post Share on other sites
318Touring 40 Report post Posted May 18, 2019 Yup all of that sound like a good next step. MAF is rather hard to disconnect, I'll need to google on how to do that and not destroy it in the process. Quote Share this post Link to post Share on other sites
Eagle 1662 Report post Posted May 18, 2019 Im talking unplugging the wiring here Quote Share this post Link to post Share on other sites
318Touring 40 Report post Posted May 18, 2019 15 minutes ago, Eagle said: Im talking unplugging the wiring here I'll take a look tomorrow, thanks Quote Share this post Link to post Share on other sites
Olaf 3317 Report post Posted May 18, 2019 (edited) Air leak? Get video of it happening, from both drivers position and under the hood. There's a big Suzuki forum here, initial skimming revealed this thread... https://www.suzuki-forums.com/suzuki-swift-geo-metro-forum/262241-suzuki-swift-sport-p0607-issue.html Is it throwing any codes? HTH PS: also https://www.suzuki-forums.com/suzuki-swift-geo-metro-forum/262105-suzuki-swift-1-5-idling-issues.html Edited May 18, 2019 by Olaf Quote Share this post Link to post Share on other sites
318Touring 40 Report post Posted May 18, 2019 Thanks @Olaf for the pointers. Resetting seems to be the first thing I could do then check for vacuum leaks. No code, which I don't know whether is unhelpful or good. My idle issue isn't as bad as described at the forum, also managed to get my hands on a workshop manual. 1 Quote Share this post Link to post Share on other sites
318Touring 40 Report post Posted May 21, 2019 A quick update, I did the following on Sunday: adjusted the idle screw - this fixes the really high idle, and seems to be dropping to normal idle quicker 'reset' the car by disconnecting the battery etc. - the juddering and hesitation have reduced significantly to almost non-existent I also tried to find vacuum leaks by spraying soapy water at the connectors and hoses - seemed there wasn't any leak. Thanks for your suggestions and help! Quote Share this post Link to post Share on other sites
