Question about 2000 Toyota Sienna

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2000 toyota sienna loses power on hills (engine missing). Just had tune up and problem became worse. Seems worse after a period of deceleration.

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Discribe tune up. I my world they have been gone since about 1995. Also, please go back to where the work was done ,if it got worse immediately after you spend money to make it better. What are you going to do now? Go somewhere else and spend more or throw parts at it. If you really spent the time to find a good shop and went on a road test with you driving and them riding and they knew why your were there in the first place, they would repair it properly. They can not guess at what you want done. You have to work with the shop and communicate the issues with the vehicle. Now you hate the place that tried to help you. No one here or on the phone can solve your veh issues. Without your participation and the vehicle in the hands of a knowledgeable technician will the patient get better.

Posted on Feb 08, 2010

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Posted on Jan 02, 2017

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3 Answers

My toyota sienna 2000 is consuming too much fuel


Could be one or more injectors stuck open. Pull sparkplugs, one will look different, that's the one to check injector.

Jun 01, 2015 | 2000 Toyota Sienna

1 Answer

Why does it lose power going up hill and fine on level ground


if the transmission dont slip that means the engine lacks power.
(torque)
this can be from forgetting to do tune ups>? every 60k miles. or per the operators guide, some cars need spark plugs every 30k did you RTM read the manual yet>? please do.
in order of likely (not physics)
bad spark (misfire) induced low power.
bad fueling lean
bad fueling too rich. (more misfire spark plugs turn black (tips)
bad engine. (compression loss)
the rare CAT melted, (inside) and getter worse.

to solve a riddle we do tests. simple tests with simple tools.
do you want to guess or test. it's your call.

Jun 27, 2014 | 2003 Hyundai Santa Fe

1 Answer

2005 ford icon losing power during acceleration i used injector cleaner it became a bit better then sent it to a mechanic who cleaned the intake manifold and sensor but it became worse now he suggests i...


this is a toy forum? , you might try ford for better answers.....?

iCON, you mean IKON< right?

HOT and cold engine,
Is hot idle speed RPM right near 800 and steady,not racing fast?

power loss, is the CEL lamp glowing running, yes,scan it.
post engine type exactly. one of these?
1.3 L I4 (petrol)
1.6 L I4 (petrol)
1.4 L I4 (diesel)
1.8 L I4 (diesel)

so its the first 2, as you said, coil, so its a GAS engine.
power loss, do the 60k tuneup
clean the MAF, sensor. if it has one. ask how. first.
does engine power return , at wide open throttle, held? up hill?
yes/no
if no, weak maf, air leaks or low fuel presssure
if power loss is only brief, then bad TPS.
my guess this engine, is MAP based, no MAF,
if so, then clean the nipple on the MAP sensors.
make sure its not clogged .
If the map works ,any air leaks cause fast idle. and FULL POWER>
so id bet the power loss is from low fuel pressures.
that is why i ask for WOT power up a hill, hot, got that.
if just tip-in power loss (recovers) that is a bad TPS.
the do wear out. easy, at 100k.

there are 2 EFI systems, which one yours has im clueless but can fix both , easy. (maf or map based) aka. air /speed density systems.

Feb 02, 2014 | Toyota Camry Cars & Trucks

1 Answer

1990 toyota 4runner power loss


You diagnose & find problems first,then
replace parts if they fail a test

Jan 06, 2013 | 1990 Toyota 4Runner

1 Answer

Prado jerking while going up hill or jerking when accelerating


Hi,
When was the last tune-up done? Should be done every 30-45KM, or depending on what your owner's manual maintenance book states.
1. Spark plugs
2. Spark plug wires
3. Fuel Filter
4. Air filter
5. Oxygen Sensor

If these have recently been replaced then do you have Check Engine Light (CEL)? If so, you'll need to get that checked by a mechanic.


GL,
Td

Oct 01, 2012 | 2000 Toyota Land Cruiser

1 Answer

2000 toyota sienna loses power when going up hills and sometime on highway,whats wrong?


well the cheapest thing to try first is the fuel filter then i would have the catalatic convertor checked

Aug 09, 2009 | 2000 Toyota Sienna

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