ES300AK

So I just picked up a '92 ES300 for $500, its got a ton of problems, but it still runs ok which is all I really need.

My main beef with it is that im only getting about 15 mpg on average, and im pretty sure I should be getting better than that. Im basically looking for some help on what kinds of things I can do to try and fix this.

Some of the problems i know of off the top of my head are...
1. Have to let the car sit a few minutes after cold start or else it will die when i put it in gear.
2. tranny jerks when it shifts
3. hesitation when i step on gas. (possibly fuel injectors?)
4. CEL is on, so i should probly take it to the shop and have em run a diagnostic on it.

so my friend told me i should clean my fuel injectors, and i think its quite obvious i dont know a whole lot about cars, so im not quite sure how to do that, or if it would help.

anyways any advice you could give would be awesome, as im still trying to figure this car out.

92ES5sp

Well it sounds like its pretty tired. Theres a good thread you should read, ill try and find it and post back. Gimme a min.

92ES5sp

Here ya go. Courtesy of debaser51:
www.clublexus.com/forums/showthread.php?t=212076

Faymester

rite away ... its your MAF ... or something related to your air flow system ... I had this problem when I 1st got my IS300

cost ya around $300 to get it fixed ... but definately worth it ... you're not damaging anything to keep driving it as is ... but just get it fixed ... the amount you're loosing in gas milage alone is more than enought to justify the repair

ES300AK

thanks for the input guys, I actually ran into that thread shortly after posting, some of it looks kinda complicated to me, but I'll give it a shot when i get some spare time. I put some fuel injection cleaner in my tank today, chevron with techron seemed to be the crowd favorite around here.

so about the MAF, what should I do about that just take it into the shop and say i need my Mass AirFlow **** replaced?

draikonz

Jerky shifting when you change gears suggest that your tranny is wearing out and you may have to get it rebuilt, or you need to check your engine mounts/tranny mounts to see if they need to be replaced.

92ES5sp

Your 92 dosent have a MAF. It uses a mechanical airflow meter instead; i highly doubt it is bad.... Start at the beginning, check the codes. At the diagnostic connector take a jumper wire or paper clip and bridge the E1 and TE1 terminals and turn the key to the ON position. Count the blinks on the C.E. light and post back. More than likely, they are O2 sensor related.

BadViper22

Can the 92-93 MAF be cleaned with crc MAF cleaner? Or does it have to be replaced?

92ES5sp

I guess you could clean the measuring plate but there is no need to IMO. I mean its right after the air filter. As long as resistance changes with the movement of the plate; and you dont have a code 32, its fine

92ES5sp

Oh and to clarify on reading codes, For example a code 25 will show as 2 blinks, pause, 5 blinks, repeat.... If youve got more than one, they will be displayed in numerical order i think, not sure on that...

BadViper22

lol, thank you 923ES5sp! Thank god for smart people like you, or id be completely clueless.

ES300AK

so I just ran the diagnostic using the paperclip method, and i would like to thank you for that one, im surprised i was competant enough to get it to work.
It gave me codes 24 and 25

thanks again

92ES5sp

O2 Sensor Probably both. Which explains your poor MPG. How many miles are on the car?

92ES5sp

No prob. Glad to help out
BTW your ES 300 looks damn good!

ES300AK

177k on the clock as of today, so is replacing the O2 a possible DIY, or am i gonna need the shop for this one?