I have a 2002 LW200 wagon with L61 Eco-tec. I installed rebuilt engine. Put back old IAC. I checked pintal to make sure it was 20MM. Engine starts great but idles at 2300-3000. After a few seconds the idle goes up and down on its own like someone is playing with the gas pedal. if gas pedal is pushed and released idle will drop to 1500. Push pedal again it goes into high idle and starts the up and down idle.

NO year car told PONTIAC. why skip , the most important fact?
what does this mean.?
if there is not one? my guess you took gander at engine and found no CMP?
well sorry there is 1 or 2, 1 for SOHC and 2 for some DOHC and
for sure a crank sensors. CKP + CMP are there at least.
it is there for sure or would never run again<<< facts./
years 1973 to 2005
2.2L limited to. GM L61 engine actual
Halfway through 2002 bingo 2.2.
ok now down to 2002-2005 ( generation car)
2.2 L DOHC L61 engine./

answering for 2003 car. only (tossed a coin)
nice chain drive cam.
the 2 cams have 2 ends and I see clear as day a huge boss on the end of one, << bingo for CMP.
getting dtc
DTC P0341?????? i SEE WHY YOU ASK, 99%^ OF WEB SITES CAN'T FIND IT.
L61 HARD, V6 ENGINE EASY FRONT CENTER ABOVE CAM.

THE DOHC , MUST BE THERE AND ON ONE OF 4 ENDS of cams ( I look 4 points and only one has sensors so...)
FOUND IT IN YOU TUBE
L61 AND WAS JUST LIKE I SAID ABOVE THE CAM SHAFT END BOSS , HAS CMP HOUSING.

FACING ENGINE, EXHAUST CAM SHAFT RIGHT SIDE FRONT OF CAR. THERE IT IS, (valve cover full front right end) and the BOSS.


https://youtu.be/qLAc0SR2mWk?t=93


LISTEN TO THE MAN, YOU CANNOT JUST THROW IT ON.
TDC #1 COMPRESSION STOKE, 0 DEGREES TDC, CAM AND CRANKS SET.
a guy that can speak clear and slow, amazing voice.
and knows the subject,but.... IMO next. yes IMo better.
I never fear hoses.
or pull; that blocking hose (drained) and not have to set the 3 point timing..
or did you buy a dead car and this was done all wrong.//????????
hummmmmmmmmmmmmm

If it has the 4 cylinder (2.2L) engine, it has a timing chain. If it has the V6 (3.0L) engine, it has a timing belt. The timing chain or belt is located under the timing cover at the 'front' of the engine -- the end of the engine where the serpentine belt is located.

How does it idle cold ? Is the check engine light lit ? Does it run good going down the road ? You could have a vacuum leak , carbon build up on the throttle plate , a IAC - idle air control valve problem or passages clogged . EGR valve pintal seat carboned up , causing the pintal not to seat ! Or if the vehicle is newer it could have electronic throttle control ! I would suggest you take it to a ASE certified repair facility an don't just replace parts , because that never ends well ,an you end up wasting money !

Black smoke usually means burning too much gas. The problem is the IAC idle air control. I would also replace the TPS

after 10 miutes does it reset security and car starts.? probably bad key cylndar. see other posts on how to remove and replace. should fix issue.

Determine which fuel pump your Saturn VUE will need. This depends not only on the make and model, but also the engine size. Models made before 2008 may have a 2.2 L L61, 2.4 L BAS hybrid, 3.0 L L81 or 3.5 L L66 engine. Current models are offered with a 2.4 L LE5, 3.5 L LZ4 and 3.6 L LY7 engine.

Prepare your vehicle for fuel pump servicing. Relieve the fuel system pressure and disconnect the negative battery cable with a socket wrench. Disconnect the fuel tank.

Disconnect the fuel pump's electrical connector, fuel lines and hoses. Remove the retaining ring for the fuel pump with wrench SA9156E and disconnect the retaining clip by pulling it toward the float arm and lifting up. Lift the fuel pump out of the fuel tank and discard the old fuel tank seal.

Install the new fuel pump using the items included in the kit and be sure to replace the fuel tank seal. Install the lock ring on the fuel pump with tool SA9156E and connect the fuel lines and hoses. Plug in the wiring harness, connect the fuel tank and negative battery cable.

Start your vehicle to check for leaks.

run a fuel pressure test...have you ever changed the fuel filter??

a new engine is $25-35,000 dollars(if Toyota even has them) The rebuilt engines are very good. 3 yrs-unlimited miles on repairs/replace engine. Get a name brand engine like Jasper or Atk or BulletProof or Gopher. These ARE Toyota engines rebuilt(sometime better than original) The transmission has evidently been a great one(mine has 185,000 miles).<p>
You've done great on this car. But to replace engine and transmission; you looking labor and parts:$7-8,000. If you fix it, it will last forever, and you'll know it's good.<p>
Or you could buy a certified used Toyota, and buy an extended warranty.<p>
The only other thing is to buy new-$20-25,000 for a new Camary v/6 ( I don't know if they even make the wagon anymore)<p>
I hope this has helped. Good Luck with whatever you decide.

Check the oil, make sure it had oil in it.
If they didnt add oil then you could have siezed the engine.
Please get back with your findings on the dipstick, amount of oil, Color, feel.

check your firing order as well as your timing