My car STALLS IN GEAR WHEJN I PRESS THE GAS EXCEPT NEUTRAL

T3CH

MEMBER
FORD EXPLORER

I have a 99' ford explorer 4wd with a 4.0 sohc with a 110,000 miles when I put it in gear if I press too much gas it wants to stall but if I press it real slow gradually I can press it more but in park or neutral it just has a rough idle I replaced the iac the egr, oxygen sensors and maf and tps someone please help I cant figure it out ant it already cost me $600.00 or more

3 Replies

JBIRD1955

MEMBER
4 POSTS

I've just replaced the engine in my 99 (4.0 SOHC, 5 speed atx) and it runs great. Everytime I attempt to drive it I have the same problem. I thought it was fuel, replaced the filter and pump. Removed the plenum and checked for vacuum leaks. Thought maybe the coil pack was breaking down, replaced that no change. Please let me know if you've figured yours out. Joe

SPONSORED LINKS

Was this

answer

helpful?

Yes

No

Sunday, November 11th, 2007 AT 5:28 PM

T3CH

MEMBER
2 POSTS

I think im not sure its the problem but a ford dealer technician told me he had 1 and that his was doin the same thing and he said his lower intake gaskets were hard allowing to much air in but if you find out the problem let me know im goin to fix the gaskets tommorow ill let you know if you find out the problem please keep me posted as ill do the same for you thank you

Was this

answer

helpful?

Yes

No

Monday, November 12th, 2007 AT 10:09 PM

JBIRD1955

MEMBER
4 POSTS

I finally found my answer, a blocked MAF tube. I bought this truck in July of last year and before that, it had been sitting since January. Apparently, some insect made it's way up into the horn and then to the tub of the MAF. It blocked off both ends of the tube with webbing and that was my problem. Check your MAF and make sure the tube is clear (you'll need a security torx to remove it from the horn). Joe

Was this

answer

helpful?

Yes

No

Thursday, November 15th, 2007 AT 8:42 AM