SuperCharger Questions and Problems

Hello,

I just bought my first 2003 Toyota Tacoma TRD Off Road SR5 4x4 Double cab. It has 125k miles, It has the gen 2 Supercharger.

Its not running right at all, i have it at my local mechanic and he is working on it. We are replacing plugs, boots for now. I have some pictures that needs diagnosed by some toyo techs who has a S/C and modded it. This S/C looks like its been modded at one time and then taken off. Not sure what is going on. Can anyone explain what is going on? The truck runs fine till you hit boost levels or around 2500 RPM it starts stuttering and just acting lazy. Its also only making around 3 lb of boost.

Mechanic said it looks like it has a 7th injector but its not hooked to anything. There are additional wires that go down and into the fire wall and into the glove box. I havent taken it apart yet to see what they go to.

 

Find out where and what the wires go to for that injector, then replace your fuel filter unless it was just done? maybe have him do a fuel pump test? find the vacuum diagram for the Supercharger and make sure it is right and the Check valve is installed and working (its on the instructions) maybe also have him do a compression test and see how the motor is doing.

 

I looked up a install guide to the URD 7th injector kit and started a reverse break down of it and pulled out the glove box and found out it is a TRD 7th Injector Kit.

Everything looks intact and still hooked up once i pulled up their install guide. I still dont know why my truck is not running properly though.

Any Ideas? I guess time will tell after i get the IK22 plugs and boots in.

 

Could be the spark plugs. If the gap is too big (from improper gapping or over wear), the boost can "blow out" the spark, causing a miss fire. Also sounds like there may be a sensor issue (MAF and O2 sensors should be checked).

 

Take it off and sell it to me

 

What is the gap in the plug suppose to be? Ive searched around and its saying anywhere from 32 to 42. Im using the IK22 like i said earlier.

Here are some of the pics, flew out sat morning at 4am to houston, tx, drove back to Alabama and got home at 10pm. 18hr journey over 1200 miles.

 

no cel?

 

I think its .040-.044. Pull one out and post a picture.

You should be using a dual prong spark plug too. It wont make a difference really, but the single prong will wear out too fast (the Tacoma sparks twice every 4 strokes).

 

Just a thought, someone had a similar issue and couldnt figure it out for a while. Turned out to be a clogged cat converter.

 

Are you putting in the 91 or higher fuel?

 

Ok, here goes and update.

Just did a top end service, tune up, clean. New ik22 plugs, new ngk wire set, new fuel filter, new plug boots. The miss is gone. But now its shooting cat conv pieces out the tail pipe. It is also only making 2lb boost and is very slow.

It's at the exhaust shop now removing the cats, it had 2.

 

This ^^

 

Sounds like a massive vacuum leak to me somewhere.

 

Yea true I guess

I'd start checking hoses and clamps.

 

I've relayed the info, I really hope it is the vacuum issue. If it is the supercharger then who rebuilds them? What kind of turn around time is a rebuild? Is there anything else that can be done to the sc besides rebuilding it?

If it is a vacuum issue. What kind of maintenance should be done to the sc. I've read a few different things about it should be maintenance free for 100k miles and other people say service nose cone at 60k.

I wanted to upgrade the trd 7th injector to the URD and add the 2.2 pulley but now the whole damn system has me concerned. If the supercharger did go bad and needs rebuild what did it do to the rest of the engine.

 

I just had mine rebuilt at Stiegmeier, $695. Excellent service and beyond excellent customer service.

http://www.stiegemeier.com/rebuild.html

 

I had to buy the actuator for my supercharger and bought it from Magnuson and I was told on ttora that it would be around $40. I guess that's what they use to charge, I paid $70. Just an FYI/update.