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Thanks for all the good advice. I ordered what I believe to be the correct MAF sensor and will install it tmmrw, clear all code with Durametric and report what happens. In my original post I mentioned this code: P1576 Cruise control readiness light via CAN exceeds limit value My CC readiness light, green light in bottom right of speedo, quit working and the CC does not work either. I saw an old pby mkd628 - Main Forum
The fun doesn't end. Went to go to dinner on Saturday and it started revving between 1000 and 1800 cyclically. Disconnected MAF and reset DME. Idles like a top at 725. Drove it, but will not really pull beyond 5000rpm. Checked MAF and it is the Bosch ending in 125 01. I have an early 2000 and info on web says that model should have the Bosch ending in 124, unless the DME has been upgraded for theby mkd628 - Main Forum
Wow. Thanks for all the good info. I will start checking this stuff out. I was checking around the oil cap and dipstick and when I pushed the dipstick back in, it pushed through the housing. So it is broken but the stick still seals perfectly with the tube. I will have to check the rest of the tube to make sure it is not broken further down. I will also get new oil cap for fun. Thanks for the inby mkd628 - Main Forum
Quick add here. I replaced the bulbs that Pelican guys said was cruise, but I think the real bulb is inside instrument cluster. Does anyone know if that is true. I saw an old post that said if the bulb in the instrument cluster is out, the CC will not function. My CC worked fine for three years and now its gone and it displays the code detailed in original post.by mkd628 - Main Forum
I have a 2000 boxster S with 78K. I have owned it for 3 years, driving it from May to October in MN. It runs great except for this weird hard miss once in a while, but no one seems to know what causes it. Any way it doesn't happen often an it doesn't bother me much. The issue I have is the CEL keeps coming on displaying some codes I will list below. It also constantly cyclically idles from 625rpmby mkd628 - Main Forum
Update for fun. I don't expect to really solve this, but... We just returned from a 2650 mile trip to the Great Smoky Mountains. Usual bucking, which I mentioned has been part of this car since I bought it. Intermittent and not reproducible. Will buck 10-15 times over 5 minutes and then may not do it for 500 miles. The CEL is usually on with a P0507 which I reset. However, it did throw a code fesby mkd628 - Main Forum
Well, the AOS was replaced, new plugs, oil/filter and no change. Still has bucking and throws P1130 code every now and then. Not sure what else to try. Thanks for all the input everyone.by mkd628 - Main Forum
Had smoke test done. No vacuum leaks. Mechanic thought pressure at oil filler was excessive. It is getting a new AOS and plugs and having coil packs checked. Did Techron treatment. Running premium top tier non O2 fuel 91 oct is best avail in MN. Bucking was reduced in severity some but still there. Will report after AOS. Still coding 1103 on CEL.by mkd628 - Main Forum
Update: I am a bad poster. I have the k & n at the house, not installed yet. Has factory filter right now. I cleaned the MAF, still bucks. I believe it has a vacuum leak, as it has an idle fluctuation between 800-1000 rpm that is constant. Taking it this week to have vacuum checked. Not sure if/why small vacuum leak would cause bucking.by mkd628 - Main Forum
Wow thanks for all the feedback.. I live in MN so the car is used about 5 months. Bulk of driving is short 15 minute trips. We take it on a few 300-1500 trips. Service history is spotty. It runs lime a champ aside from the issue. Hoppy44 gave an excellent description. Hesitation/buck. Happens 10-100 MPH as long as throttle is open slight and fuel demand is low. Mine foes not blink the CEL. The onby mkd628 - Main Forum
Gents, 2001 boxster S 72000 miles. Had for 2 1/2 years. Has a random HARD stumble at slightlly open throttle. Feels similar to light switch being turned on and off. Not a bog or soft fuel starve but like engine shut off then flicked back on. Cannot be duplicated readily, but only happens when throttle is open a bit. Will do it at 80 with cruise on or at 30. Anyone seen this before? Thanks! P.s. nby mkd628 - Main Forum