Why does my car do this?

Post by **winez31** » Mon Jul 17, 2006 4:57 pm

so today i drove my car for like 45min straight, and when i got home i forgot to let my car cool down. then when i came back out of my house and tried to leave it wouldn't stay running. so i left in my other car and let it cool off and now it runs fine. does anyone know what causes this?

Post by **evildky** » Mon Jul 17, 2006 6:21 pm

when the car won't start, will the engine turn with the starter? or do you get nothing when you turn the key?

Post by **winez31** » Tue Jul 18, 2006 4:19 am

it will like start but won't stay running and it runs really rough. I tried to drive it it would stutter up to 5 lbs then take off like it normally would from 5 to 10lbs.

Post by **winez31** » Wed Jul 19, 2006 7:18 am

bump it did it again today

Post by **evildky** » Thu Jul 20, 2006 6:42 am

I'd suspece the AMF or the connector, a litte die electric grease in the connector is a good idea, and so we're clean at vacue the car won't hardly run but once you get up to about 5 psi o boost the car runs good?

Post by **winez31** » Thu Jul 20, 2006 7:44 am

yeah i tired electric greece still not working. i looked at the ecu and its not throwing any codes. i have no idea what it is.

Post by **winez31** » Thu Jul 20, 2006 3:19 pm

update: it only runs bad whe it warms up and i still have no idea what it is.

Post by **evildky** » Thu Jul 20, 2006 5:07 pm

CHTS? but I don't think it would casue ti to run that badly, or perhaps the IAC stuck open so it can't stay running at iwarm dle?

Post by **winez31** » Thu Jul 20, 2006 5:09 pm

nope it dies right away do you have aim its easier to explain on here

Post by **winez31** » Thu Jul 20, 2006 5:23 pm

i think its because i crushed my fpr to much

Post by **AZ-ZBum** » Fri Jul 21, 2006 12:16 am

winez31 wrote:i think its because i crushed my fpr to much

Umm... Just what were you trying to accomplish by doing this?

Post by **evildky** » Fri Jul 21, 2006 4:00 am

DOH! you did the turbo dsm fuel pressure in a vice trick and then the trouble started!? then yeah your flooding the thing, time for a new fpr

Post by **winez31** » Fri Jul 21, 2006 4:46 am

yeah, thats what i was thinking, but then someone told me it could possibly be vapor lock.

Post by **evildky** » Fri Jul 21, 2006 5:59 am

if the problem started when you crushed the fpr, then you should have no reason to look for any other explanation, which depending on the amount of pressure, which I am gonna guess is pretty high you could be damaging your fuel pump, too much back pressure will cause the pump to work a lot harder and shorten it's life, I suggest you pick up a decent AFPR, I have the aeromotove on my car but unless your getting into the 14=20 psi range I think the less expensive bosch should suit your needs

Post by **AZ-ZBum** » Fri Jul 21, 2006 6:54 am

winez31 wrote:yeah, thats what i was thinking, but then someone told me it could possibly be vapor lock.

It's VERY difficult for a fuel injected car to suffer from vapor lock. There's usually too much fuel pressure. You're flooding your engine. It's also possible you've broken the internal seal in the FPR and are dumping raw fuel into the intake plenum via the vacuum lines.

Post by **winez31** » Fri Jul 21, 2006 7:45 am

ok. thanks guys thats what my guess is to. today i drove it and once it warmed up it ran really bad, and once it hit boost bluish white smoke poored out. so im guessing im running extremely rich.

Post by **winez31** » Fri Jul 21, 2006 2:44 pm

so it wasnt fpr i replaced it today same thing once my car warms up it doesnt stay running

Post by **AZ-ZBum** » Fri Jul 21, 2006 3:48 pm

check your plugs. My guess is you've fouled them so much they may take time to come around. Or just put in new ones.

Post by **winez31** » Fri Jul 21, 2006 4:04 pm

i just replaced them yesterday. the ecu is thowing a code for a neutral switch?

Post by **winez31** » Fri Jul 21, 2006 4:07 pm

i just don't understand why it does it when it warms up. it now sounds like a constant back fire

Post by **evildky** » Fri Jul 21, 2006 7:14 pm

white smoke indicates burning coolant, lets hope you don't have a blown HG, have you messed with the timing? does it backfire all the way through or only under boost? if the timing is retarded too far you'll be burning the charge as the exhaust valves open, I've also seen the optical distributors fail intermitantly which can casue a similar issue, did the plugs look fowled or did they look hot? just wondering if it couldn't be a fuel pump that can't keep up but they tend to be problems under boost not at idle

Post by **winez31** » Sat Jul 22, 2006 11:00 am

it runs fine all the way throught till it warms up and after it warms up till boost hits 5lbs idk. im starting to wonder if my timing belt skipped a notch, but wouldn't that affect it even if it was cold?

Post by **winez31** » Sat Jul 22, 2006 3:39 pm

ok... so heres what i have replaced chts,fpr,plugs,all my vacume lines,thermostat. and still it runs till till the first line on the temp gauge then it dies. next im gunna try ecu

Post by **winez31** » Sat Jul 22, 2006 4:32 pm

the plugs just smelled like straight gas and they were black

Post by **winez31** » Sat Jul 22, 2006 8:27 pm

bump im getting really upset

Post by **AZ-ZBum** » Sun Jul 23, 2006 9:14 am

Wow! You're an impatient bastard, aren't you?

You're getting too much fuel. Figure out why. Bad injectors. Bad fuel pressure. Bad ECU. Bad FPR. etc.

Post by **winez31** » Sun Jul 23, 2006 1:34 pm

yeah very.

Post by **winez31** » Sun Jul 23, 2006 2:25 pm

ok so now it won't even rev to 1200rpm and it sounds like it misses right away when i start it now. so basically it is getting worse the more things i fix.

Post by **evildky** » Mon Jul 24, 2006 4:57 am

hows your plug wires? I had a bud with a escort that behaved similarly and he heven replaced the wires twice before gettng a set that fixed the problem? could be a MAS issue? AICV? Fuel pump? these are the things I would look at?

Post by **winez31** » Mon Jul 24, 2006 6:59 am

my fuel pup seems to me fine im gunna try a new ecu then maf. thanks for your help guys i really apriciate this im going through z withdrawls.

Why does my car do this?

Why does my car do this?

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