Is high idle RPM bad?
Is high idle RPM bad?
If your car seems to be revved up to a higher-than-normal RPM while idling, it’s not necessarily a problem. If this problem happens while the engine is cold, it may be part of the engine’s design. Some cars, especially older cars with carburetors are designed to run at 1200 rpm or so until they are warmed up.
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
Why does my car not shift into 2nd gear?
Acceleration is virtually zero. After stopping the car (say at a redlight), starting again it will refuse to shift into 2nd gear. When it finally does, it will make a hard “thunk” sound and the car will surge forward. If the car is stopped and turned off for awhile, everything seems to go back to normal.
When do trannies start having 2nd gear shift problems?
Usually when those trannies start having 2nd gear shift problems it time for a rebuild. There were a ton of updates to the valve body in those that pertain to hard/late 2nd gear shifts. Have it scanned first, get back to us and we can go from there.
What is the shifting solenoid on a Chevy S10?
The shifting solenoid on a Chevrolet S-10 pick-up is designed to regulate when the transmission shifts. This solenoid is part of the electronic transmission control system, and is controlled by the powertrain control module, or PCM. The PCM actuates the shifting solenoid when it determines that an upshift or downshift is required.
How is my 1994 S-10 4.3 running?
Starts fine, even today when it was -15, fuel pressure 52 running, holds after shut down, newer plugs/wires/cap rotor, tested MAP sensor and tests good, tested resistance changes in TPS (with sensor out) and changes were smooth along range, unplugged every sensor I could find individually looking for changes, no luck.
Where was the ignition located on my 93 S-10 Blazer?
My old 93 S-10 blazer had an internal Ignition Module, inside the bottom of the distributor. I know this much, if those little PIA’s start winking out, you will see all kinds of issues similar to what you are describing.
What causes a misfire on a 94 S-10?
Typically if the lower intake gasket leaks vacuum, it only affects one cylinder and causes a noticeable misfire all the time. On your engine, the ECM batch fires the injectors, it can not richen the mixture for individual cylinders.
How often does a 94 S-10 4.3 drop rpm?
After you take it out and drive it, it’ll idle fine for a couple minutes, then will drop a couple hundred rpms every 30 seconds or so for just a count, then back to normal. Any ideas? I’m pulling my hair out.
