2001 Range Rover HSE Check Engine Light - Page 2 - Land Rovers Only

umoms · 04-12-2008, 09:15 AM

Its me again

Cleaned the MAFS again and 20 miles later I get P0734 and P0455. I know P0455 is usually something to do with the gas cap but it looked fine to me.....Maybe it was just a little off...

So you guys thing its officially time to change the MAFS? Or other symptoms I should try?

The plugs and wires look like they been changed.

hermanpj · 04-12-2008, 09:43 PM

P0455 is large leak, emissions EVAP sys. Do check fuel cap is on evenly / not cross threaded and forced on. i'm out of my depth on P0734.

umoms · 04-16-2008, 11:44 PM

well i fixed the p0455 but the p0734 comes back over and over even after cleaning my MAFS several times. From what i been reading the MAFS might be culprit. ITs $300 for the MAFS

What do you guys say? Also what kind of tool do I need to take the MAFS out fully. I thought it was a security star but it seems to be five-sided?

hermanpj · 04-17-2008, 08:04 PM

Quote:

Originally Posted by umoms

well i fixed the p0455 but the p0734 comes back over and over even after cleaning my MAFS several times. From what i been reading the MAFS might be culprit. ITs $300 for the MAFS

What do you guys say? Also what kind of tool do I need to take the MAFS out fully. I thought it was a security star but it seems to be five-sided?

get a second (trained) opinion before you replace the mass air ffllow sensor to fix an OBDII (emissions focused) diagnostic code referring to the transmission. i'd sure hate to see you drop money on a new MAFS base on so little corellation. if you so need a new MAFS take it out and go to autozone, ask to compare to other Bosch MAFS in stock. It is probably a common part.

umoms · 04-27-2008, 07:46 PM

Ok replaced the MAFS and I dont get the P0734 codes anymore. I get the P0455 codes still. Every 15 miles or so. I triple checked the gas cap and the purge valve.

What do you guys suggest?

Try a new gas cap?
Or anything else?

umoms · 04-30-2008, 02:27 PM

Ok..On second thought I think it might be the purge valve....

I took a picture of mine. Is it supposed to be dangling out and not connected to anything?

I also noticed a little bit off the rubber of the top is peeling off. The part where the black plastic piece and the grey rubber tubing meet. Can i just tape that part?

ImageShack - Hosting :: img00332rp5.jpg

hermanpj · 05-02-2008, 04:53 PM

im not able to get to my car to look, but no its not supposed to be dangling.

04-12-2008, 09:43 PM	#17 (permalink)
hermanpj Senior Member Join Date: Jan 2005 Location: Plano (Dallas) Posts: 362 Gallery: 4	P0455 is large leak, emissions EVAP sys. Do check fuel cap is on evenly / not cross threaded and forced on. i'm out of my depth on P0734. __________________ Pat Herman

05-02-2008, 04:53 PM	#22 (permalink)
hermanpj Senior Member Join Date: Jan 2005 Location: Plano (Dallas) Posts: 362 Gallery: 4	im not able to get to my car to look, but no its not supposed to be dangling. __________________ Pat Herman

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04-12-2008, 09:15 AM	#16 (permalink)
umoms Member Join Date: Oct 2007 Posts: 20 Gallery: 0	Its me again Cleaned the MAFS again and 20 miles later I get P0734 and P0455. I know P0455 is usually something to do with the gas cap but it looked fine to me.....Maybe it was just a little off... So you guys thing its officially time to change the MAFS? Or other symptoms I should try? The plugs and wires look like they been changed.

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04-16-2008, 11:44 PM	#18 (permalink)
umoms Member Join Date: Oct 2007 Posts: 20 Gallery: 0	well i fixed the p0455 but the p0734 comes back over and over even after cleaning my MAFS several times. From what i been reading the MAFS might be culprit. ITs $300 for the MAFS What do you guys say? Also what kind of tool do I need to take the MAFS out fully. I thought it was a security star but it seems to be five-sided?

04-27-2008, 07:46 PM	#20 (permalink)
umoms Member Join Date: Oct 2007 Posts: 20 Gallery: 0	Ok replaced the MAFS and I dont get the P0734 codes anymore. I get the P0455 codes still. Every 15 miles or so. I triple checked the gas cap and the purge valve. What do you guys suggest? Try a new gas cap? Or anything else?

04-30-2008, 02:27 PM	#21 (permalink)
umoms Member Join Date: Oct 2007 Posts: 20 Gallery: 0	Ok..On second thought I think it might be the purge valve.... I took a picture of mine. Is it supposed to be dangling out and not connected to anything? I also noticed a little bit off the rubber of the top is peeling off. The part where the black plastic piece and the grey rubber tubing meet. Can i just tape that part? ImageShack - Hosting :: img00332rp5.jpg

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