If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. |
|
|
Thread Tools | Display Modes |
#1
|
|||
|
|||
Saturn 95 sc2, idle dies on me..
When i drive my sc2 the idle goes from 1000rpm down to dead stop,
expecially when i give it more gas then usall and stoping at a light. I changed the idle control valve, but no luck. Any suggestions??>? |
Ads |
#2
|
|||
|
|||
Saturn 95 sc2, idle dies on me..
|
#3
|
|||
|
|||
Saturn 95 sc2, idle dies on me..
BläBlä wrote: > In article . com>, > says... > > When i drive my sc2 the idle goes from 1000rpm down to dead stop, > > expecially when i give it more gas then usall and stoping at a light. I > > changed the idle control valve, but no luck. Any suggestions??>? > > > When cold or only after its warmed up? > > EGR or ECT sensor or Fuel pressure. Diagnosing beats replacing. When warmed up... |
#4
|
|||
|
|||
Saturn 95 sc2, idle dies on me..
EGR or intake manifold leak would be where I'd start looking.
Just my 1/50 of a dollar -WaV JaY wrote: > When i drive my sc2 the idle goes from 1000rpm down to dead stop, > expecially when i give it more gas then usall and stoping at a light. I > changed the idle control valve, but no luck. Any suggestions??>? |
#5
|
|||
|
|||
Saturn 95 sc2, idle dies on me..
BläBlä wrote: > In article . com>, > says... > > When i drive my sc2 the idle goes from 1000rpm down to dead stop, > > expecially when i give it more gas then usall and stoping at a light. I > > changed the idle control valve, but no luck. Any suggestions??>? > > > When cold or only after its warmed up? > > EGR or ECT sensor or Fuel pressure. Diagnosing beats replacing. when warmed up, is there anyway to check the egr valve..... i looked up the ect sensor but could not find one. anything else it might be called |
#6
|
|||
|
|||
Saturn 95 sc2, idle dies on me..
BläBlä wrote: > In article . com>, > says... > > When i drive my sc2 the idle goes from 1000rpm down to dead stop, > > expecially when i give it more gas then usall and stoping at a light. I > > changed the idle control valve, but no luck. Any suggestions??>? > > > When cold or only after its warmed up? > > EGR or ECT sensor or Fuel pressure. Diagnosing beats replacing. when warmed up, is there anyway to check the egr valve..... i looked up the ect sensor but could not find one. anything else it might be called |
#8
|
|||
|
|||
Saturn 95 sc2, idle dies on me..
BläBlä wrote: > In article .com>, > says... > > > > BläBlä wrote: > > > In article . com>, > > > says... > > > > When i drive my sc2 the idle goes from 1000rpm down to dead stop, > > > > expecially when i give it more gas then usall and stoping at a light. I > > > > changed the idle control valve, but no luck. Any suggestions??>? > > > > > > > > > When cold or only after its warmed up? > > > > > > EGR or ECT sensor or Fuel pressure. Diagnosing beats replacing. > > > > when warmed up, is there anyway to check the egr valve..... i looked up > > EGR vavle may not be able to close. Clean out any carbon buildup. > > > the ect sensor but could not find one. anything else it might be called > > Engine Coolant Temp Sensor. 95 was a change over year, you may have 2. > > http://www.autoglossary.com/ Should i claen it with carb cleaner? |
#9
|
|||
|
|||
Saturn 95 sc2, idle dies on me..
Blau - I have to disagree with you on this one. The ECT sensor goes out
"high" or "open". I dont think they short out. If they did, I'm not thinking it would make the engine die from slow idle. That said - I've never encountered THIS particular problem. Not in a Saturn. Checking all other sensors would be a logical plan for finding the problem. What you said about 95 being a changeover leaves me scratching my head... The only way to tell the engines in my 94 and 95 apart is the way the air intake routes into the air filter box and the difference in the EGR - in 95 the EGR became directly electronically controled rather than the vacuum diaphram actuator. They both have the same temperature sensors in the same places with the same wiring configuration. Did the 95 begin using two O2 sensors? (I havent been down there long enough under the 95 to notice if there was a downstream post-cat-converter O2 sensor). Three particular sensors I'm thinking of which may be involved are MAP sensor, Throttle position rheostat, and the air inlet temperature sensor. Peace - WaV BläBlä wrote: > In article .com>, > says... > > > > BläBlä wrote: > > > In article . com>, > > > says... > > > > When i drive my sc2 the idle goes from 1000rpm down to dead stop, > > > > expecially when i give it more gas then usall and stoping at a light. I > > > > changed the idle control valve, but no luck. Any suggestions??>? > > > > > > > > > When cold or only after its warmed up? > > > > > > EGR or ECT sensor or Fuel pressure. Diagnosing beats replacing. > > > > when warmed up, is there anyway to check the egr valve..... i looked up > > EGR vavle may not be able to close. Clean out any carbon buildup. > > > the ect sensor but could not find one. anything else it might be called > > Engine Coolant Temp Sensor. 95 was a change over year, you may have 2. > > http://www.autoglossary.com/ |
#10
|
|||
|
|||
Saturn 95 sc2, idle dies on me..
JaY wrote:
> BläBlä wrote: > >>In article . com>, says... >> >>>When i drive my sc2 the idle goes from 1000rpm down to dead stop, >>>expecially when i give it more gas then usall and stoping at a light. I >>>changed the idle control valve, but no luck. Any suggestions??>? >> >> >>When cold or only after its warmed up? >> >>EGR or ECT sensor or Fuel pressure. Diagnosing beats replacing. > > > When warmed up... > Not sure if Saturns have this problem, but in many cars the idle control valve adjusts the airflow at idle; however, the control depends on a minimum air flow past the throttle plate. If the throttle plate and bore are gummed up so that too little air passes by in the "closed" position (it's not supposed to be completely closed), then the idle air controller runs out of travel and the engine stalls. What brings this up is your initial complaint of the engine stalling at idle when stopping, such as at a light. This is a classic symptom of a gummed up throttle plate in many cars. I know I routinely (every 30-50K miles) clean the one in my '94 Saturn SW2 after learning that I needed to clean my Plymouth Voyager throttle at that interval. I can't recall if I have ever experienced the same symptoms in the Saturn that I did in the Voyager, however. It is simple and free to try cleaning and see if it helps your symptoms. It not, then continue with the suggestions of others. If you do clean it, don't just spray carb cleaner in to the throttle area, because the solvents may be bad for rubber parts farther in. Remove the duct from the air cleaner, and use a solvent moistened cloth to clean both sides of the throttle plate, and the bore where the plate closes. Try not to plug any of the little holes in the bore. -- NOTE: to reply, remove all punctuation from email name field Ned Forrester 508-289-2226 Applied Ocean Physics and Engineering Dept. Oceanographic Systems Lab http://adcp.whoi.edu/ Woods Hole Oceanographic Institution, Woods Hole, MA 02543, USA |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
will not idle when first started, motor dies. 1998 Sport SOHC 4 | Cosmo | Ford Explorer | 4 | January 4th 06 01:45 PM |
Causes of highly elevated idle speed | TeGGeR® | Honda | 4 | December 26th 05 03:57 PM |
Saturn horror stories- could (will) happen to you! | [email protected] | Saturn | 3 | June 22nd 05 12:49 AM |
Why all the cracked heads, oil burning,etc. here? | [email protected] | Saturn | 11 | March 28th 05 09:39 PM |
Saturn Lemons- epidemic flaws, engine cracks, ball joints | misterfact | Antique cars | 0 | January 6th 04 06:04 PM |