91LS400pilot Posted April 20, 2009 Share Posted April 20, 2009 Hi friends, I am lurking for some time and this my first post. I learned a lot and thank you all for your valuable contributions so we can all avoid the heavy fees from the Lexus stealers. Background: I bought my 91LS400 (second owner) with 62K miles in 03/1996 from the company I was working for. It was the company's president's car. The car now has 128K and it is in excellent condition. Until last year I was responsible for the International ops for another company and mostly on International travel and at the same time I had two extra cars (an Audi, and a Merc) that's why the LS low mileage. No major repairs apart of changing my dead altinator six months ago due to PS leaking. My problem lately: White smoke (yes I know) but most important the very rough idle. Remedies: Added in the gas four times various liquid cleaners, changed the spark plugs, yes I cleaned the throttle-now I have the time to do these kind of things but no cure, until today when while the engine was running I opened the hood and I saw a short -see picture below. I put some electrician's black tape and the idle is back to where it should be. Can somebody tell me what is the connector's name what is connecting if it can be replaced by DIY and where it can be bought? Thank you all in advance. Best Chris Quote Link to comment Share on other sites More sharing options...
nc211 Posted April 20, 2009 Share Posted April 20, 2009 Going from memory here, but I believe you've got a bad wire to one of your plugs there. If I recall, if you were to remove the black casing to expose the timing belt, you'd also find your dist cap for that side of the engine's spark plugs. Quote Link to comment Share on other sites More sharing options...
Bali26 Posted April 20, 2009 Share Posted April 20, 2009 ignition coil wire? Quote Link to comment Share on other sites More sharing options...
jcrome04 Posted April 20, 2009 Share Posted April 20, 2009 Spark plug wire Quote Link to comment Share on other sites More sharing options...
91LS400pilot Posted April 20, 2009 Author Share Posted April 20, 2009 Spark plug wire Thank you all for the prompt responses. Since, my non-Lexus mechanic changed the spark plugs two weeks ago I have to change the wires myself. Any suggestions for the spark plug wires brand? Thank you so much.. Chris Quote Link to comment Share on other sites More sharing options...
Lucky13 Posted April 21, 2009 Share Posted April 21, 2009 Could be a lot of things. I had a problem with white smoke because the PS pump was leaking and when I started it it would burn what leaked out the exaugst pipes. Quote Link to comment Share on other sites More sharing options...
eatingupblacktop Posted April 21, 2009 Share Posted April 21, 2009 Hi friends,I am lurking for some time and this my first post. I learned a lot and thank you all for your valuable contributions so we can all avoid the heavy fees from the Lexus stealers. Welcome to the club! About time you joined the mix! Background:I bought my 91LS400 (second owner) with 62K miles in 03/1996 from the company I was working for. It was the company's president's car. Nice Scoop! Can somebody tell me what is the connector's name what is connecting if it can be replaced by DIY and where it can be bought?Thank you all in advance. Best Chris Looks llike your arrow is pointing to the L bank coil connection to the distributor. Take off the tb cover and trace it yourself. I would say you could use a new ignition wire set. Stick with oem for both wires and plugs. Shop around for best price. Quote Link to comment Share on other sites More sharing options...
91LS400pilot Posted April 21, 2009 Author Share Posted April 21, 2009 Hi friends,I am lurking for some time and this my first post. I learned a lot and thank you all for your valuable contributions so we can all avoid the heavy fees from the Lexus stealers. Welcome to the club! About time you joined the mix! Background:I bought my 91LS400 (second owner) with 62K miles in 03/1996 from the company I was working for. It was the company's president's car. Nice Scoop! Can somebody tell me what is the connector's name what is connecting if it can be replaced by DIY and where it can be bought?Thank you all in advance. Best Chris Looks llike your arrow is pointing to the L bank coil connection to the distributor. Take off the tb cover and trace it yourself. I would say you could use a new ignition wire set. Stick with oem for both wires and plugs. Shop around for best price. Thank you for taking the time to respond. Yes, after examining it better it is the L bank coil connection to the distributor. I called Advanced Auto and they have the ignition wires for $118.29 (Professional series). Autozone's Duralast is for $62.99. I will call tomorrow the Lexus Parts-I was wondering.... Any suggestions? Chris Quote Link to comment Share on other sites More sharing options...
eatingupblacktop Posted April 21, 2009 Share Posted April 21, 2009 I repeat, use only OEM wires and plugs! Plenty of threads here on this. Read up on this before you decide to go aftermarket. Shop around for best price, then compare with dealer's. Quote Link to comment Share on other sites More sharing options...
jcrome04 Posted April 21, 2009 Share Posted April 21, 2009 Stay with OEM wires.. and if your mech F'ed it up he should replace it at his own expense.. otherwise... find a new "trustworthy" mech. Quote Link to comment Share on other sites More sharing options...
steve2006 Posted April 21, 2009 Share Posted April 21, 2009 The lead in question is as stated by everyone else the HT lead from the coil to the distributor cap, one thing to look out for here is where it passes out of the timing belt cover where there should be a rubber grommit to protect it. Chances are this has either been misfitted or not refitted as it is a pig to do unfortunately this leads to chafing of the wire and the result you ended up with. Quote Link to comment Share on other sites More sharing options...
jcrome04 Posted April 21, 2009 Share Posted April 21, 2009 www.parts.com Quote Link to comment Share on other sites More sharing options...
91LS400pilot Posted April 21, 2009 Author Share Posted April 21, 2009 Hi guys, Just replaced all ignition wires, she runs like a charm. Best Chris Quote Link to comment Share on other sites More sharing options...
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