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1987 MR2 - 4 years ago Mass Air Flow sensor apparently went…

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1987 MR2 - 4...

1987 MR2 - 4 years ago Mass Air Flow sensor apparently went bad. Car sat in a garage for that long. A repair garage replaced the MAF and got things running. Replaced fuel, filter, plugs, wires, etc.. But now gets 14mpg instead of 24 mpg. Also, at an even ~3000rpm it stumbles(?) as if fuel is being abruptly turned on and off, rocking the engine and jerking the car. Slight acceleration or deceleration evens out. Definitely running rich. The stumbling was very bad at first after MAF relplaced. It has gotten better, but still not good.

Mechanic's Assistant: Does the engine stall right after starting? And what about hesitation or jerking during acceleration?

Starts great. Does not hesitate or jerk during acceleration, only on a flat, evened out condition around 3000 rpm.

Mechanic's Assistant: Are you fixing your MR2 yourself? What have you tried so far?

I have a mechanic friend (40 years), but works more on diesels these days. As mentioned, air filter, fuel filter, plugs, wires, O2 sensor was replaced four years ago. We have wondered about injectors or catalytic converter...

Mechanic's Assistant: Anything else you want the mechanic to know before I connect you?

Not that I can think of .

Submitted: 8 months ago.Category: Toyota
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Answered in 2 days by:
9/22/2017
Toyota Mechanic: Shawn Few ,
 replied 8 months ago
Shawn Few
Category: Toyota
Satisfied Customers: 144
Experience: Lead Tech at F1 Auto Service
Verified

Hey ,how are you
I seen That your post been sitting for a long time without an answer ,I 'm sorry for your long wait without getting an answer till now
I will try to help you on this issue if you have not gotten it resolved yet
Please Let Me Know
Thank You
ASE Certified Technician

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Customer reply replied 8 months ago
This is the first time I have used this service, and so far the Justanswer side has not really held up their end of the bargain. My answer to your questions is that no, we have not had our issue resolved. Should we go on? Should you try and help? You have read the issue, how confident are you that you can provide a recommended solution? Thanks. Chris
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