Referring to the engine when the accelerator is depressed and the engine does not seem to keep up (hesitates) with the driver's demands. Hesitation can be followed by stalling (engine quitting) or by surging (engine building power without notice).

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5
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2answers
80 views

Emissions Problem: Lambda AND CO Slightly High on my 98 Mazda 626

I just took my 98 Mazda 626 for it's inspection and they said the carbon monoxide is slightly high. The test is done using a tail pipe gas analyzer while holding the RPMs between 2500 - 2800 for ...
7
votes
1answer
131 views

Engine hesitates and stalls when warm

My car is a Toyota Vitz 2007 and it has 80k KM on it. I usually drive short trips (about 5km) most of the time in a low traffic road. Car drives mostly fine in these short trips. But, if I drive for ...
2
votes
1answer
49 views

Detect engine stumble or hesitation

I want to know if I can detect my engine is having hesitation/stumble problem from an OBD. I mean not from any fault codes, but from the parameters obtained from the OBD. e.g. calculate the obtained ...
8
votes
2answers
932 views

My Ignition Timing is Retarded, no seriously, it's really screwed up

I logged some test data to try and help me figure out why my 98 Mazda 626 GF 2L ATX has a rough idle and is suffering from hesitation. (Speed k/h),(TPS_v),(MAF g/sec),(RPM),(SparkAdvance),(...
3
votes
1answer
666 views

Resolved: Idle RPMs fluctuate and engine hesitation

I am kind of stumped. I have a 1996 Toyota Rav4 that is acting weird. Let me start with the list of recent repairs. I gave it: a tune-up (new sparks, wires, distributor cap and rotor) changed the ...
2
votes
1answer
242 views

'99 Honda accord sputtering when accelerating and stalling at idle

My car is a '99 Honda Accord (V6). I have been putting mid-grade gas since I got it but I put in regular gas the other day and I believe that's when it started sputtering. It's getting worse now. The ...
3
votes
4answers
13k views

Hesitation or low power at slow acceleration

Subaru 2004 2l auto tip tronic. It seems to hesitate or have slow or lack of power when you accelerate slowly