idle sucks

sefus · 04-14-2005, 12:17 PM

alright Im needing some advice. my idle is fine until i drive it a bit, so basicly once it warms up, it drops and surges from 600 to 1100rpm when in neutral. when the clutch is in its fine though. all my hoses are good so im thinking tps? any ideas?

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sefus · 04-15-2005, 04:20 PM

really need some help with this one guys. after its warmed up if im not on the gas it searches for an idle then dies.

cabbage · 04-15-2005, 04:40 PM

Did you mess with the tps lately? Adjusting those is not fun at all!

Do you have a vaccum guage? Check and see if the bvsv is opening the egr valve at idle after the engine is warm.

sefus · 04-16-2005, 12:31 PM

Quote:

Originally Posted by cabbage

Did you mess with the tps lately? Adjusting those is not fun at all!

Do you have a vaccum guage? Check and see if the bvsv is opening the egr valve at idle after the engine is warm.

could you explain that one for me. im used to carbs... thanks for the help!

cabbage · 04-16-2005, 01:30 PM

If I were you, i would first check to see if the ECU is sending any codes.
In case you dont know where the check connector to short is : click here The check engine light will flash, count the flashes to tell what the problem is. If there are no long pauses between flashes(or just a consistent flash), its normal.

FingerMan20 · 04-16-2005, 05:51 PM

Uhhh... I dunno if this helps, but my brother's '95 Saturn did the same thing, raggedly idling after warm-up and just generally running weaker, and his EGR was totally spoiled... He gave it a good cleaning, and it was good as new.
Just a thought.

sefus · 04-17-2005, 11:17 AM

awesome, thanks guys. keep ya posted.

hotshoe · 04-17-2005, 06:47 PM

Sefus- I went through the same dam thing with my 92. I repalced the TPS and it didnt fix it. I pulled the idle adjustment screw and cleaned it and the TB out...........good as new.

TPS_ $98.00

Carb leaner_$4.50

Go figure!

sefus · 04-17-2005, 10:17 PM

well i worked on it today. I ran the codes and according to Haynes I pulled a 4, 5, and 11. so I took the TPS off a spare manifold i had and went to take the one off the engine, realized i couldnt get to the bottom screw so took off the t-stat and hoses right before i realized it would be easier to take off the throttle body. when im putting the Tstat back on, one of the bolts strips out. i tried a heli coil but it didnt take so my t-stat housing is basically being held together by one bolt and a lot of form-a-gasket. got the tps changed out though and it seems to be a little better, but now my eyes are glued to my temp guage and rearview mirror for when I start losing radiator fluid. If its not one thing is another.

I did check the EGR vacuum thingamabob and the filters were pretty gross. the manual refered to them when you're getting crappy milage so all those looking to get that .11 better mpg you might want to clean or replace those little filters.

thanks for all the help guys.

callmej75 · 04-18-2005, 02:14 PM

is your tps set right? it takes some time rather than just "changing it out"...took me about 10 tries before i got correct readings.

sefus · 04-18-2005, 02:32 PM

It fixed my idle problem so thats good for me at this point. I set the mounting screws exactly where they were on both intakes but how exactly am I going to know if shes off kilter?

callmej75 · 04-18-2005, 02:36 PM

http://www.4crawler.com/4x4/CheapTri...#TPSAdjustment
Thats how I adjusted mine...4crawler is awesome PERIOD

FingerMan20 · 04-18-2005, 02:42 PM

Yea, 4Crawler rules.

Joyota · 04-18-2005, 08:11 PM

Quote:

Originally Posted by sefus

I set the mounting screws exactly where they were on both intakes but how exactly am I going to know if shes off kilter?

After doing the head gasket, and putting everything back together, I tried this same thing. The problem is that the tps is "very" sensitive. We're talking thousandths of an inch. Follow callmej75's advice and visit Roger's site. While you're there, check out the rest of his site. The guy is amazing. You won't regret it.

callmej75 · 04-19-2005, 04:19 AM

Quote:

Originally Posted by Jovis

After doing the head gasket, and putting everything back together, I tried this same thing. The problem is that the tps is "very" sensitive. We're talking thousandths of an inch. Follow callmej75's advice and visit Roger's site. While you're there, check out the rest of his site. The guy is amazing. You won't regret it.

amen....preach it brotha! i've been eyeballing then ball joint spacers for some time now on 4crawler's site...im getting very close to ordering!

04-15-2005, 04:40 PM	#3 (permalink)
cabbage Contributing Member Join Date: May 2003 Location: Santa Maria, CA Posts: 621	Did you mess with the tps lately? Adjusting those is not fun at all! Do you have a vaccum guage? Check and see if the bvsv is opening the egr valve at idle after the engine is warm. __________________ Milton 01 Tacoma access cab 4x4 TRD TC Long travel, Supercharged 04 Tacoma Doublecab 4x4 TRD hoes all around!

04-16-2005, 01:30 PM	#5 (permalink)
cabbage Contributing Member Join Date: May 2003 Location: Santa Maria, CA Posts: 621	If I were you, i would first check to see if the ECU is sending any codes. In case you dont know where the check connector to short is : click here The check engine light will flash, count the flashes to tell what the problem is. If there are no long pauses between flashes(or just a consistent flash), its normal. __________________ Milton 01 Tacoma access cab 4x4 TRD TC Long travel, Supercharged 04 Tacoma Doublecab 4x4 TRD hoes all around!

04-16-2005, 05:51 PM	#6 (permalink)
FingerMan20 Registered User Join Date: Mar 2005 Location: Colorado Posts: 298	Uhhh... I dunno if this helps, but my brother's '95 Saturn did the same thing, raggedly idling after warm-up and just generally running weaker, and his EGR was totally spoiled... He gave it a good cleaning, and it was good as new. Just a thought. __________________ 1998 Tacoma Standard Cab 4x4 -5 Speed -2.7L 3RZ-FE -80,000 Miles -custom ISR Mod -Purolator Fuel Filter -Royal Purple -Marlin Crawler Shift Stuff -Lots of Plans -No Money

04-17-2005, 06:47 PM	#8 (permalink)
hotshoe Registered User Join Date: Sep 2004 Location: At my anvil or under a horse in Southeast PA Posts: 179	Sefus- I went through the same dam thing with my 92. I repalced the TPS and it didnt fix it. I pulled the idle adjustment screw and cleaned it and the TB out...........good as new. TPS_ $98.00 Carb leaner_$4.50 Go figure! __________________ 00 Tundra Stonewell Body Ready for shoeing 97 T100 Under the Knife! I am the Toe Cutter! Have you seen the Night Rider?

04-18-2005, 02:42 PM	#13 (permalink)
FingerMan20 Registered User Join Date: Mar 2005 Location: Colorado Posts: 298	Yea, 4Crawler rules. __________________ 1998 Tacoma Standard Cab 4x4 -5 Speed -2.7L 3RZ-FE -80,000 Miles -custom ISR Mod -Purolator Fuel Filter -Royal Purple -Marlin Crawler Shift Stuff -Lots of Plans -No Money

04-15-2005, 04:20 PM	#2 (permalink)
sefus Registered User Join Date: Feb 2005 Location: Spokane, WA Posts: 126	really need some help with this one guys. after its warmed up if im not on the gas it searches for an idle then dies.

04-17-2005, 11:17 AM	#7 (permalink)
sefus Registered User Join Date: Feb 2005 Location: Spokane, WA Posts: 126	awesome, thanks guys. keep ya posted.

04-17-2005, 10:17 PM	#9 (permalink)
sefus Registered User Join Date: Feb 2005 Location: Spokane, WA Posts: 126	well i worked on it today. I ran the codes and according to Haynes I pulled a 4, 5, and 11. so I took the TPS off a spare manifold i had and went to take the one off the engine, realized i couldnt get to the bottom screw so took off the t-stat and hoses right before i realized it would be easier to take off the throttle body. when im putting the Tstat back on, one of the bolts strips out. i tried a heli coil but it didnt take so my t-stat housing is basically being held together by one bolt and a lot of form-a-gasket. got the tps changed out though and it seems to be a little better, but now my eyes are glued to my temp guage and rearview mirror for when I start losing radiator fluid. If its not one thing is another. I did check the EGR vacuum thingamabob and the filters were pretty gross. the manual refered to them when you're getting crappy milage so all those looking to get that .11 better mpg you might want to clean or replace those little filters. thanks for all the help guys.

04-18-2005, 02:14 PM	#10 (permalink)
callmej75 Contributing Member Join Date: Feb 2004 Posts: 2,932	is your tps set right? it takes some time rather than just "changing it out"...took me about 10 tries before i got correct readings.

04-18-2005, 02:32 PM	#11 (permalink)
sefus Registered User Join Date: Feb 2005 Location: Spokane, WA Posts: 126	It fixed my idle problem so thats good for me at this point. I set the mounting screws exactly where they were on both intakes but how exactly am I going to know if shes off kilter?

04-18-2005, 02:36 PM	#12 (permalink)
callmej75 Contributing Member Join Date: Feb 2004 Posts: 2,932	http://www.4crawler.com/4x4/CheapTri...#TPSAdjustment Thats how I adjusted mine...4crawler is awesome PERIOD

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