1999 Honda Accord Idle and Acceleration Problems

Tiny
GRANTF213
  • MEMBER
  • 1999 HONDA ACCORD
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 116,000 MILES
The car starts fine. When in idle its kind of rough momentarily, then smooths out. Its an automatic, when shifting gears, it bogs down and sputters, acting like it wants to die and has a few times. It had been doing that for about a month. Now, sometimes, not all the time, when I give it gas it doesnt go for a few seconds, then it goes. Feels like it may be not getting fuel. The check engine light is on. I replaced plugs but did not help much.
Do you
have the same problem?
Yes
No
Thursday, May 28th, 2009 AT 5:47 PM

3 Replies

Tiny
F4I_GUY
  • EXPERT
Retrieve the code and post it up. That may be the answer to your problems.

Also, you should do a full ignition tune-up (wires, cap and rotor) not just spark plugs.
Was this
answer
helpful?
Yes
No
Thursday, May 28th, 2009 AT 8:35 PM
Tiny
GRANTF213
  • MEMBER
I got the codes and they are:

P0171
P0420
Was this
answer
helpful?
Yes
No
Saturday, May 30th, 2009 AT 8:05 PM
Tiny
KHLOW2008
  • EXPERT
DTC P0171: FUEL SYSTEM TOO LEAN

1. Check the fuel pressure
Is fuel pressure OK?
YES - Go to step 2.
NO - Check these items:
If the pressure is too high. Check the fuel pressure regulator and the fuel return line.
If the pressure is too low. Check the fuel pump, the fuel feed line, the fuel filter, and the fuel pressure regulator.

2. Start the engine. Hold the engine at 3,000 rpm with no load (in Park or neutral) until the radiator fan comes on.

3. Check the Primary HO2S or Air Fuel Ratio (A/F) Sensor (Sensor 1) output with the scan tool. Does it stay at less than 0.3 V or more than 0.6 V?

YES - Replace the Primary HO2S or Air Fuel Ratio (A/F) Sensor (Sensor 1).
NO - Go to step 4.

4. With a vacuum pump, apply vacuum to the EVAP canister purge valve from the intake manifold side. Does it hold vacuum?
YES - Check the valve clearances and adjust if necessary. If the valve clearances are OK, replace the injectors.
NO - Replace the EVAP canister purge valve.

DTC P0420: CATALYST SYSTEM EFFICIENCY BELOW THRESHOLD

1. Reset the ECM/PCM

2. Start the engine. Hold the engine at 3,000 RPM with no load (in Park or neutral) until the radiator fan comes on.

3. Except F23A4 SULEV engine: Test-drive at 40-55 mph (64-88 km/h) for approx. 2 minutes. Then decelerate for at least 3 seconds with the throttle completely closed. Then reduce the vehicle speed to 35 mph (56 km/h), and try to hold it until the scan tool indicates FAIL or PASS as the TWC test result.

F23A4 SULEV engine: Test-drive at 50-55 mph (80-88 km/h) for approx. 2 minutes. Then decelerate for at least 4 seconds with the throttle completely closed. Then accelerate to 55 mph (88 km/h), and try to hold it until the scan tool indicates FAIL or PASS as the TWC test result.

Is the test result FAIL?

YES -Check the three way catalytic converter (TWC). If necessary, replace the TWC.

NO -Intermittent failure, system is OK at this time.
Was this
answer
helpful?
Yes
No
Sunday, May 31st, 2009 AT 2:33 AM

Please login or register to post a reply.

Related Engine Stall While Driving Content

Recommended Guides