disco52

New Member

• Mar 11, 2011

• #1

mine is running like a bag of ****e and have changed the coolant temp sensor and it runs fine when warm and **** when cold.

question, does the 3.9 EFi MAF fit on an 89 F reg 3.5 EFi? if so has any got one to lend/sell me so i can rule that out of the equation, thanks in advance.

PS, im over in Herts and the car is with Dave Harvey, those that know him.
cheers

 

P

Pete The Biker

Active Member

• Mar 11, 2011

• #2

Can't help with the MAF (don't think it would swap - would need change of ECU too?), but have you checked the Extra Air Valve?

Pete

 

norseman

Well-Known Member

• Mar 12, 2011

• #3

Pardon my ignorance but is this the same as an 'flapper' airflow meter? If so I can loan you a known good 3.5efi one but you would have to come to Essex to collect/return.

 

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Pete The Biker

Active Member

• Mar 12, 2011

• #4

norseman said:

Pardon my ignorance but is this the same as an 'flapper' airflow meter? If so I can loan you a known good 3.5efi one but you would have to come to Essex to collect/return.

Click to expand...

No, it's different - relies on measuring the cooling effect of air flowing past a hot wire to measure volume of flow, instead of measuring the movement of the flap.

Pete

 

discool

Well-Known Member

• Mar 12, 2011

• #5

A 3.5 rrc is a flapper, a 3.5 disco is hot wire and a 3.9 in both is also hot wire.

 

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Pete The Biker

Active Member

• Mar 12, 2011

• #6

Disco52's (the original poster) profile shows an RRC so I assume this is what we are talking about?

Pete

 

3.5 efi

Well-Known Member

• Mar 12, 2011

• #7

^ would be, on a G plate.

 

disco52

New Member

• Mar 18, 2011

• #8

its a flapper, sourced a recon one fittted it - made no difference, on to the sensors now, there are 2 near the plenum any other to swap out? It starts and runs lumpy until warm then will run all day, it failed the MOT on the emissions as its running very rich also, thanks