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01 Toyota Tacoma; idle surge w/ stalling


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dardyer
New User

Jul 1, 2013, 6:18 PM

Post #1 of 4 (1850 views)
01 Toyota Tacoma; idle surge w/ stalling Sign In

2001
Toyota Tacoma 3.0 I think
147K miles

Car semi-parked for 6 months over winter with little gas. Longest it w/out start-up was was 6 weeks. It was parked outside in Oregon. I noticed my battery cable terminal has some build-up so I was going to clean that but haven't gotten around to it yet. I started driving it again so filled it with gas, got a wheel alignment and tune-up. 150 miles later, after seemingly fine drive (my mom drove about 100 miles and didn't notice anything odd) I have idle surging. When I start it in the morning or otherwise, it revs up/down starting with 1200 - 1500 rpms, then 1200 - 1000, and it dips down to 800 sometimes, then finally dies after 3 - 5 minutes. Exhaust stinks like gas. No engine light. No overheating. Idling doesn't seem to change with the A/C on or when I step on the brake. When I'm driving it, it gets me to where I need to be, but I can feel a few gerks here/there, and when stopped at a light, it eventually stalls. I turn her over again when the light turns green and it starts right up again, I give it some gas and then it goes. At the next light, it does the same thing.

I just took it to the dealership concerned that something happened as a result of the tune-up. No codes. They are planning to check the spark plug wires but in the meantime, they found metal in the timing belt and a leaking water pump. Not sure that these are related? If the water pump is bad I will change it and I know that's not too costly; however, the timing belt is a pretty penny and I'm not sure if changing it will fix the idling issue.

Prior to this problem, the timing belt, water pump/thermostat were changed about 50K miles ago. Throttle position sensor was changed less than 5K miles ago (but the idling surges I noticed before changing the TPS were different than the one I'm experiencing now).

In reading some of the forums, it seem like it could be a number of different things but looks like the problem-solving could get costly. Thank in advance for your help - I could really use it!


Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Jul 1, 2013, 7:00 PM

Post #2 of 4 (1837 views)
Re: 01 Toyota Tacoma; idle surge w/ stalling Sign In

You've listed out the problems noted in person so why are you asking a web site?

Stinks of gas and can't idle properly there's a code waiting to tell you something. Is a leaking water pump and problem with a 50K old timing belt job a problem and expensive - yes.

BTW - Just what is "semi-parked?" Is that like partly off a cliff or what?

T



Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Jul 1, 2013, 7:20 PM

Post #3 of 4 (1829 views)
Re: 01 Toyota Tacoma; idle surge w/ stalling Sign In


Quote
BTW - Just what is "semi-parked?" Is that like partly off a cliff or what


I think it's like " a little bit pregnant"



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Discretesignals
Ultimate Carjunky / Moderator
Discretesignals profile image

Jul 1, 2013, 7:28 PM

Post #4 of 4 (1815 views)
Re: 01 Toyota Tacoma; idle surge w/ stalling Sign In


Quote
If the water pump is bad I will change it and I know that's not too costly; however, the timing belt is a pretty penny and I'm not sure if changing it will fix the idling issue.


I guess you have never done a water pump on a 5VZFE. You better change the belt and the pulleys or the idling problem will be the least of your worries.

Did you check for vacuum leaks? Also check the ducting from the air cleaner to the engine. Make sure it isn't ripped or has loose clamps.





Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.

(This post was edited by Discretesignals on Jul 1, 2013, 7:47 PM)






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