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98 lt35 van starts fine but wont rev up . change throttle body [electric ] at end of axcelerator cable any ideas guys thanks p.s its a 2.5 tdi

Van is 98 lt35 dti

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 334 Answers

SOURCE: VW LT35 / hard starting when hot

have you check your fuel filter. and how hot dose the motor get when it start hard.no motor like to start when they are hot. check your fan relay. and check your coolnt ok. good luck have a nice day

Posted on Apr 18, 2009

  • 92 Answers

SOURCE: CLEAN THROTTLE BODY ON AUTO - TOYO CAMRY 98 -WANT

have been spraying into throttle bodies for years, never had a problem messing up plugs. but if you are insistent, you can remove the throttle body from the intake and clean it outside of the car. note that you may need to replace throttle body gasket after removing it depending on how well it comes apart and how well it seals once put back together.
Here's one more idea if you're careful, though i don't think i recommend this. You could stuff a small clean shop rag just through the throttle flap so it's actually in the intake manifold (make sure you can get it back out when you're done) and then spray all through the throttle body. The rag should soak up any excess fluid and then pull it back out when you're done. The reason i don't recommend this is because you may get fibers or other unfiltered debris in the intake and then into the cylinders which could theoretically scratch your cylinder walls and compromise compression to a degree or cause you to burn oil (yeah i guess it's not likely but it has to be possible).

Posted on Sep 29, 2009

  • 1810 Answers

SOURCE: IT WONT START WE HAVE FUEL TO THE THROTTLE BODY

might be
might also be a antitheft isue

Posted on Jan 19, 2010

brandon_m618
  • 63 Answers

SOURCE: Throttle body carbureator will not rev

butterfly stuck? jets bad? or carb is shot maybe need to rebuild it does the throttle move

Posted on Apr 30, 2010

  • 1 Answer

SOURCE: hi,i have a vw lt35 tdi i stopped at traffic

i have the same left it a day it starts no sure what???

Posted on May 12, 2010

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My 1.9 tdi passat starts but wont rev. any clues?


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I have a 98 Pontiac Bonneville. When it starts you have to rev it up to clear it out,then it runs fine. But if you shut it off 9 times out of 10 it wont start back up, it tries to turn over but it wont


If the vehicle has trouble turning over, with the starter trying hard to turn over, but not actually working at a good rate of speed, then I would check the amperage on the neg. or pos. battery cable using an ammeter.

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1999 ram auto trans wont shift into park


you could need a throttle linkage adjustment. first check to see if your ram will start in "park" and "neutral" only. if it starts in any other gear=faulty neutral safety switch. replace. ok, now check linkage for proper adjustment...with engine off and in park...remove intake housing..disconnect cableend from attatchment stud on your throttle body..slide cable off the stud (carefully)..verify that the transmissionthrottle lever is fully forward (idle) position..and verify that the lever on the throttle body is at curb idle pos..insert small screwdriver under edge of the retaining clip and remove..center the cable end on attatchment stud to within 0.04", or 1mm. install retaining clip onto cable housing..check cable adjustment..be sure trans throttle lever and throttlr body lever move in sync with each other.

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3 Answers

98 lexus gs300 codes p1120 p1121


I wanted to start a thread specifically about failures within the throttle body concerning the GS300 (1998 in my case)

My symptons were:
VSC, VSC OFF, and ENGINE Lights would come on, followed by my car going into Limp Mode, where only that last 25% (if that) of the throttle would respond (basically have to floor the pedal to even move at all).

During the mornings, or when the engine was COLD, the throttle operated normal...then once the car warmed up, usually at about 10 mins, the problem would start...it happened intermitantly at first...1 or 2 days over the course of a week, then it became more consitent, until last week it became a daily problem.

The first part I tried was the Throttle Position sensor, which is on the front side of the throttle body, and the easiest thing to replace...this didnt help at all. $300 part from Lexus, $80 part from RockAuto.com (exacly same part toyota OEM)

THE PART THAT FIXED THE PROBLEM:
===========================================
"Idle Valve Motor", which is the larger electrical object next to the TPS on my 98 GS300. Problem is solved.

The Codes I got were P1120 and P1121 - Accelerator Sensor problem. However it wasnt really the Accelerator Sensor, it was indeed to actual electrical Motor that controls the opening of the Butterfly valve inside the Throttle body.

I found the problem by good old trouble shooting, and using an ohm meter to see if the throttle electric motor was getting elev, I found that the elec motor just to the left of the TPS was basically freaking out and shutting down. The Accelerator Pedal Sensor is on the Back-side of the throttle body where the throttle cable connects to, and has a spring on it. It was fine.

GS300's are indeed "drive by wire" concerning the throttle...the cable triggers the Accel Pedal Sensor, which sends a signal to the ECU, the ECU then sends power to the Idel Valve Elec Motor (next to the TPS), which opens and closes the mechanical butterfly valve, then the TPS sensor detects how far the elec motor is actually opening the butterfly valve...its a closed-loop feed-back system, meaning any failure in any sensor will cause the entire systm to fail.

The throttle cable apparently is ONLY there to allow the fail-safe of having that last 10-25% throttle when the electronic system fails...there is a gearbox inside the throtle body which allows the tail end of the throttle to manually engage the butterfly valve...the rest of the time, the butterfly valve is 100% opened and closed via the idle control motor.

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2 Answers

Starts but wont rev up


Have you thought to sold your car and buy a better one?

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