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🙁 Hello I love watching Eric’s videos and watching almost all of them. I’m at a roadblock
I have a 1994 Lexus Es300 the is kind of the same as a Toyota Camary
I have around 340,000 Miles on it and for the last year or so I have been having a miss-fire issue with it, I have changed the following parts get ready it’s more then a few
Mass air flow sensor,spark plugs,Tps,ignitor,coil packs, coil Plug connectors,fuel injectors,cam sensor,crank sensor,battery,starter,alternator,rear main mount,dog bone mount,radiator,cv joints and relays. I take it to get check out a least once a year and change the oil every 3,000 miles I changed every suspension part on it all around,
so I have no idea of what it can be I have had my car in my local shop for the last 2 weeks and they can not get it going I need help I need my car so I can drive my Son to School everyday and it’s becoming a real problem now I could really use the help so please if anyone has any idea’s please let me know.thanks ETCG1 FANS!! 🙁
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yes p401 I used to have multiple misfire code but after changing all those part it’s just on one cylinder now but I check the coil pack spark plugs and fuel injector for that one cylinder a they seem fine.I have good fuel presser and compression no vacuum leaks 93 oct gas
that car has a distributorless ignition system so everything is a pain.
Got any ideas? I would love the help thanks for the reply.The P0401 is an EGR insufficient flow detected code. I’ve read that the vacuum modulator is a common problem on these cars. Here’s a link to another thread on a forum that shows you how to test it.
http://www.clublexus.com/forums/es300-and-es330/302017-p0401-egr-flow-insufficient-how-to.htmlHey thanks for the reply. I took off my EGR and clean it very will it look like it had rust and rock salt it in I think that canister maybe as issue but can it cause a misfire?
Yes it can, especially a random misfire. If carbon gets built up in the valve, then it won’t seat properly and will leak exhaust gases back into the intake manifold when it’s not needed. Thus causing that darn misfire.
Wow thank you so much for the info I have ordered a new EGR valve and the Modulator I hope it does the trick I have tryed every thing else I will keep you posted on my progress.
Thanks again I how I can help you out some day.Yeah I checked it out the EGR was really nasty and the modulator did not hold air,
So I hope that this will solve my issue.
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