Why does my GMC Envoy die at idle?
Took it to them. When the vacuum line is activated for the engine, such as when the air or heat was on, the truck would die at idle (when in gear only, would not die if in neutral). I had changed the battery and on the Envoys it resets all previously stored air/ fuel, idle, etc info that the computer had previously gathered about the motor.
Why does my GMC Sierra 1500 run rough at idle?
The spray smoothing out the rough rpm is an indication of the engine running lean, could be low fuel pressure, could be a vacuum leak. With it running rough at an idle and smoothing out at a higher rpm is a general sign of a vacuum leak.
Why is my GM 4.8l engine running too lean?
The engine may be running too lean, due to a leaking intake manifold. Too lean means too much air and not enough fuel; according to the power control module (PCM) calculation. When the engine is cold, not all sensors function. As the engine warms up the oxygen sensors report the lean condition.
How does a Chevy Silverado feel at idle?
Changing plugs and wires made no difference. It seems to idle fine on initial startup, but after about 20-30 seconds, it becomes rough. It feels like it is running fine once off idle and highway speeds, but it feels like it’s about to die when idling at a stop light.
Is there an issue with the envoy’s rough idle?
No Codes Having an issue with a rough idle condition, goes away at about 700 rpm. Accelerates fine and top end is fine. Just a pronounced misfire at about 500 rpm. Cleaned TB, run BG44k through tank. Cleaned Camshaft actuator solenoid. Was clean even after 200k, first time I’ve pulled it. Pulled plugs, look fine.
How to fix a GMC Envoy stall idle problem?
Hope this helps. Also you will need to reset the computer and check engine light, just disconnect the pos post to the battery for ten minutes the reconnect post and turn your ignition key on and off three times to reset the computer and clear codes.
The engine may be running too lean, due to a leaking intake manifold. Too lean means too much air and not enough fuel; according to the power control module (PCM) calculation. When the engine is cold, not all sensors function. As the engine warms up the oxygen sensors report the lean condition.
Do you need an OEM Service Manual for envoy?
Only use AC mounts, the aftermarket is very hit or miss, biased to miss, on damping the 10 Hz frequency at idle. He did say he replaced the mounts with OEM. Need GMT360/370 Service Manuals?
Took it to them. When the vacuum line is activated for the engine, such as when the air or heat was on, the truck would die at idle (when in gear only, would not die if in neutral). I had changed the battery and on the Envoys it resets all previously stored air/ fuel, idle, etc info that the computer had previously gathered about the motor.
What kind of engine does the GMC Envoy have?
The Envoy was Motor Trend magazine’s Sport/Utility of the Year for 2002. The 4200 Vortec 4200 engine I6 engine was named one of Ward’s 10 Best Engines from 2002 to 2005.
When did the GMC Envoy replace the Chevy Blazer?
In line with the Chevrolet Trailblazer replacing the Chevrolet (S-10) Blazer, the 2002 Envoy replaced the GMC Jimmy five-door. The Envoy was Motor Trend magazine’s Sport/Utility of the Year for 2002.
When did the GMC Envoy S-10 get discontinued?
Most of the S-10 and Sonoma trucks which share the same chassis were being discontinued during the 2003, and 2004 model years. So both the Jimmy 2-door and the Jimmy 4-door were both discontinued after the 2001 model-year in the United States & Mexico, and then after the 2005 model-year in Canada.
What to know about a 2006 GMC Envoy?
There is no one perfect vehicle for everyone, so it is difficult to make a broad assessment of the 2006 GMC Envoy. We recommend you read Edmunds expert reviews and consumer reviews to make that buying decision for yourself. When in doubt, ask to test-drive the 2006 GMC Envoy and see how it feels.
How many mpg does my Honda envoy get?
A 5 second spray was all it took. It purred like a kitten on a 300 mile round trip to Orlando today when it got Average 24.5 MPG on the car’s computer! A new record for this car. After chasing this for a couple of months and not wanting to throw parts at it, I broke down and bout six new coil packs and 6 new plugs.
Can a bad throttle position sensor cause idle surging?
Idle surging can be caused due to other issues in the car, but if it happens in conjunction with other throttle position sensor symptoms, the culprit is often the TPS. At idle, the ECM will not get the correct information and the throttle will variate randomly causing idle surges. 3) Check Engine Light
What causes idle surges on a car ECM?
Idle surging can be caused due to other issues in the car, but if it happens in conjunction with other throttle position sensor symptoms, the culprit is often the TPS. At idle, the ECM will not get the correct information and the throttle will variate randomly causing idle surges.
What causes a car to shut off at a stop light?
My Engine Shuts Off When I Reach a Stop Light An engine that stalls when you reach a stop light or while idling may point to a faulty idle air control solenoid (IAC). The computer uses the IAC solenoid to bypass the throttle valve and inject more air, depending on engine operating conditions.
Why does my Chevy Trailblazer stall when the a / C is on?
Make sure you put the hose on the underside of the air intake box back on. If this is not installed, it will cause a vacuum leak. i cleaned the throttle body, but now it’s worse! Also the service engine light is blinking. The engine still turns off when i turn the A\C on.
Why does my GMC air conditioner stop working?
For about 5 miles the A/C worked normally till we hit a R/R and the bump made it stop blowing cold air and he was finally convinced. Back to the shop and 30 min later they found the problem. Turned out to be the low pressure switch, (under hood on bottom of small tank) it was corroded and causing a loss of electrical contact.
What causes a Chevy Trailblazer to stall at idle?
We notice the back AC was on and the truck turns off even when we turn on the ac or heat on the front it shuts. Off what could be the problem. Answer: Stalling with the A/C on at idle is usually caused by carbon build up in the throttle body. The throttle body bore and plate should be cleaned with a carbon cleaner spray.
Why does my envoy have a gasoline smell?
Traced the gasoline smell to a leaking FPR, gasoline smell fixed but rough idle continues. I admit I didn’t check the intake bolts behind the little hose, but none of the other bolts were loose and I sprayed some starter fluid around that area with no change in rpm.
Where is the temperature sensor on a GMC Envoy 4.2L?
Answer: From the front of the truck, it is located on the passenger side front of the engine. Just below the valve cover. Number 9 above. GMC envoy 4.2L can you tell me where is can find coolant below temperature sensor. There is no such sensor.
Why does my GMC Envoy not have a service light?
Hi, 2004 GMC envoy 4×4 SUV,the service 4WD light came on this morning and hasn’t since. Any thoughts? This a Canadian truck. Would need to know the code it set, but you could be looking at a 4WD switch problem, encoder motor, or possibly a transfer case control module.
When did I buy a 2005 GMC Envoy?
Purchased a Pre Owned Certified 2005 GMC Envoy SLT, in 2008. In 2010 had to replace Cam Shaft sensor, (this was early warning of problem to come). A few months ago had misfire cylinder 2, replaced the coil & plug, code cleared engine light off.
Answer: From the front of the truck, it is located on the passenger side front of the engine. Just below the valve cover. Number 9 above. GMC envoy 4.2L can you tell me where is can find coolant below temperature sensor. There is no such sensor.
How many miles does a GMC Envoy have?
Mileage: 140,426 miles Body Type: SUV Color: White Engine: 6 Cyl 4.2 L No accident or damage reported to CARFAX. 1st owner purchased on 01/03/05 and owned in NC until 09/09/16 • 2nd owner purchased on 09/09/16 and owned in NC until 01/29/21. 1st owner drove an estimated 7,289 miles/year • 2nd owner drove an estimated 6,229 miles/year.
What kind of engine does GMC Envoy have?
I used to have a Jeep Wrangler with the 2.5 liter engine and the AX5 transmission. Tons of fun to drive, but the transmission is not a drivers transmission, I smoked two of them before trading it for my Envoy. The 4.2 I6 feels stronger than what GMC gives it credit for, the Envoy has a tighter turning radius than my old Jeep!
Which is better a GMC Envoy or a jeep?
The 4.2 I6 feels stronger than what GMC gives it credit for, the Envoy has a tighter turning radius than my old Jeep! And it is absolutely wonderful to drive!
Is there a recall on the GMC Envoy?
Called GMC customer complaint line and told to call National Traffic Saftey to register complaint, Everybody that owns an Envoy with this shutting down problem has to file a complaint with them before a recall can take place. Please call to file. This is year later and still having to dump money into Envoy to keep on road.
What makes my car voltage gauge read low?
As a vehicle slows, engine/generator RPM slows and the current (amperage) output of the generator may not be sufficient to supply the loads, the vehicle system voltage will drop and the lights will dim. Dimming of the lights is an indication that current is being pulled from the battery.
What causes the idle voltage on a GMC Yukon?
Items that affect the vehicle’s electrical system current and voltage at idle are the number of electrical loads being used, including add-on accessories, and extended idle times.
What happens when a GMC Yukon engine slows down?
As the engine/generator speed changes, so will the current (amperage) output of the generator. As a vehicle slows, engine/generator RPM slows and the current (amperage) output of the generator may not be sufficient to supply the loads, the vehicle system voltage will drop and the lights will dim.
Items that affect the vehicle’s electrical system current and voltage at idle are the number of electrical loads being used, including add-on accessories, and extended idle times.
As a vehicle slows, engine/generator RPM slows and the current (amperage) output of the generator may not be sufficient to supply the loads, the vehicle system voltage will drop and the lights will dim. Dimming of the lights is an indication that current is being pulled from the battery.
Why does my car voltage drop when idle?
• At idle, vehicle electrical loads may exceed the low speed current (amperage) output of the generator and when this happens the shortfall comes from the battery. This will result in a drop in the electrical system voltage as the battery delivers the additional electrical current to meet the demand.
Why does my GM Truck drain the battery?
My issue is that my truck will drain a battery to below 10VDC within a period of 24hrs or less. It is now in a GM Service Center for the second time regarding this issue. The first time it went in, the vehicle’s battery was replaced, and draw tests were performed. It passed all these tests, and the vehicle was released back to me.