Car runs rough

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Meisa
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Car runs rough

Post by Meisa » 12/04/18 9:07

I've got a mk2 Mr2 (1992) and I'm having a slight problem. After the HG blew I got a new engine installed. The engine was previously sat for about 10 years but it runs healthy.

Usually driving along letting off the throttle it jerks back and forth like it's about to stall. Sometimes it does this when throttle is applied.


Edit: Just like to point out its running an aftermarket short ram intake without a maf sensor

Recently had full service.




MRHAPPY62
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Re: Car runs rough

Post by MRHAPPY62 » 12/04/18 19:35

ISCV ? If it's an n/a I would go back to standard airbox .


notroubleclubber
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Re: Car runs rough

Post by notroubleclubber » 12/04/18 19:43

Did it have a full service befoe engine went in?
Was the timing checked as guessing the cambelt was changed at time of install?

Could be a number of things tbh

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jimi
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Re: Car runs rough

Post by jimi » 13/04/18 2:58

Meisa wrote:
12/04/18 9:07
Edit: Just like to point out its running an aftermarket short ram intake without a maf sensor
How does that work ? How does the ECU get info on the airflow without a MAF (or MAP) sensor
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MRHAPPY62
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Re: Car runs rough

Post by MRHAPPY62 » 13/04/18 14:48

I think he meant temp sensor ;)


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Meisa
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Re: Car runs rough

Post by Meisa » 16/04/18 22:01

MRHAPPY62 wrote:
13/04/18 14:48
I think he meant temp sensor ;)
I'm not mechanically minded but it could be the maf? It was the plug directly plugged into the air intake. The one installed on it before had a leak so I replaced it with another aftermarket one. Except this had no slot where I could plug it in.

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Re: Car runs rough

Post by jimi » 16/04/18 22:13

MR2 MAF
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Meisa
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Re: Car runs rough

Post by Meisa » 16/04/18 22:49

No its not that mate. Cheers. I'm going to start with the idle control and update in a weeks time. Going for a sill repair right now.

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