I've got a 1991 DX Hatchback, 4-speed, completely stock. A while ago the car was having problems running and was leaking gas. I replaced the fuel lines behind the drivers side rear wheel and fixed the leak. I also replaced the fuel filter and checked the rotor, cap, and plugs. Now the car will start and idle excellent for as long as I will let it, but after it's driven for about 15-20 min it will die under acceleration at any speed. When I start it back up, it idles perfect, but if I rev it up quickly it will studder and die. However, if I open the throttle slowly, it will rev up to high rpms no prob. No CEL at all either. Was thinking maybe fuel pressure regulator or something. If anyone has a good idea of what is going on, I would really appreciate some help. Thanks

 

check your rotor man its loose and i know it might be stupid but make sureits not out of gas

 

Yeah, I checked all the basic ignition components and it has a full tank of gas. We have tested the car several times in all types of weather and it always does the exact same thing. Runs great for a little while and then has trouble accelerating. Anyone else?

 

Get a compression test or leakdown test. Make sure the TPS is reading the right #s at idle and WOT, make sure the 02 is fine. Also, check the vacuum lines and the FITV. - Darrell

 

I'm not getting a check engine light, so I'm thinking it must be something that the ECU doesn't read

 

they make 4 speed dx's? not being sarcastic i didnt know this.

 

I have an ef hatch, ive also been having this problem. i had a new ECU put in and it worked great for about a day. the next dayit was having the same problem. the guy i took it to said to take it to the dealer cause he didn't even know....

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by d16efhatch &raquo;</TD></TR><TR><TD CLASS="quote">they make 4 speed dx's? not being sarcastic i didnt know this.</TD></TR></TABLE>
I'm pretty sure it's a DX. It's actually not my car, it's my dad's and he has been getting on my case to fix the thing because he thinks I am some master mechanic. I can usually figure out what is wrong with a car, but this is not anything I have heard of before. If I had the proper diagnosis tools I could prob narrow it down, but I'm broke and he doesn't want to invest any more money than is absolutely necessary.

 

HelP