CAR HESITATES WHEN REVING OR DRIVING

Tiny
AKINYEMI22
  • MEMBER
  • 2002 TOYOTA RAV4
  • 200,000 MILES
I am currently working on a 2002 toyota RAV4, It hesitates when accelerating or reving when its Idle, So I had it scanned and there were numerous trouble codes cylinder misfire cylinder 1-4, So I replaced the old plugs with new ones, after sometime I scanned the car again and the trouble codes were cleared. But the car still hesitates when accelerating or reving it. What could be the cause
Monday, July 15th, 2013 AT 7:43 AM

10 Replies

Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
This is going to have to be diagnosed using a scan tool and analyzing the sensor data. It could be many, many different things like MAF, vacuum leaks, low fuel pressure, incorrect temp sensor readings, intake snorkel leaks, etc, etc.
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Monday, July 15th, 2013 AT 8:08 AM
Tiny
AKINYEMI22
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  • 10 POSTS
I just remembered there was also a code something about MAF I don't remember the trouble code itself but I remember it didn't clear when I tried to clear it, could this be the cause, I was thinking towards the fuel system
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Monday, July 15th, 2013 AT 8:15 AM
Tiny
AKINYEMI22
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Also is it possible to do a fuel pressure test with a scanner
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Monday, July 15th, 2013 AT 9:00 AM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
Not on a Toyota
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Monday, July 15th, 2013 AT 9:03 AM
Tiny
AKINYEMI22
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  • 10 POSTS
So could the MAF be the problem since it displayed some DTC and they couldn't be cleared
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Monday, July 15th, 2013 AT 9:14 AM
Tiny
AKINYEMI22
  • MEMBER
  • 10 POSTS
Hello nobody has given a clear explanation on how I'll troubleshoot the above mentioned areas, I'm still waiting for your reply
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Monday, July 15th, 2013 AT 11:23 AM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
Re-read my first reply
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Monday, July 15th, 2013 AT 11:29 AM
Tiny
AKINYEMI22
  • MEMBER
  • 10 POSTS
I have gone through your reply, like I mentioned earlier what should I look out for with the MAF cause I remember having MAF trouble codes
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Monday, July 15th, 2013 AT 11:40 AM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
All of the sensor data has to be analyzed in the scan tool looking for anything out of parameter.
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Monday, July 15th, 2013 AT 11:44 AM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
Most good scan tools will give you expected sensor values.
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Monday, July 15th, 2013 AT 11:47 AM

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