Skip the auto shop - Our mechanics make house calls

Q: VERY ROUGH IDLE STALLS WHEN PUT IN GEAR

asked by on

Bought it from friend whom after having engine rebuilt; let it sit at his lake property for a little over a year before I got it. No dents in body, no cracks on interior, new engine, 4-wheel drive with new mudders. He just wanted it "gone" and basically giving it to me. Here is chronological order of problems and my actions. First attempt to drive - Got about a mile from property and it lost all power The CAT was clogged. Removed exhaust syster. Improved the power but still backfiring in engine compartment. Had new exhaust system welded. Then had a "crank no start" condition for quite a while. After doing all of the normal tests and troubleshooting; determined that there was a short/ground somewhere between ECM and injectors causing them to stay open. found bad wire on TPS..REPLACED IT. now very rough idle and it dies when put in gear. have changed, plugs(twice), wires, fuel pressure regulator, cap & rotor, drained old fuel and replaced fuel filter. Changed oil and filter,
My car has an automatic transmission.

Hi there. The idle speed of an engine is basically the rotational speed the engine runs on when it is un-coupled from the drive train and the throttle pedal is not being depressed. When an engine is running at idle speed it generates enough power to smoothly operate equipment such as the water pump, alternator, and power steering but not enough power to move the vehicle itself. This problem progressively gets worse if you have a vacuum leak, dirty or clogged fuel pump or other component is faulty. In order to resolve this problem, it’s best to contact a professional mobile mechanic and have them complete a car idle is rough inspection.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. VERY ROUGH IDLE STALLS WHEN PUT IN GEAR

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: What would make an exhaust valve bright white

Hi Scott. The general rule of thumb on valves is that white is an indication of extreme heat (or a lean fuel mixture) and black is a sign of a rich mixture (or excessive carbon deposits). However, there are several...

Q: driving home, went to shift, clutch wouldnt move.

Hello there, a variety of common issues will cause your clutch pedal to not engage with you 1999 Ford Ranger. If the clutch pedal is not able to be pushed at all the problem is likely mechanical as hydraulic issues...

Q: Air conditioner

You need to take it to a different mechanic to have a diagnosis. You either leaked out the refrigerant or the system was overcharged. Have the pressures checked. The sealer will not seal a leak in an evaporator or a...

Related articles

P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...