on a basemap and was driving home from school after getting my idle fixed and my gsr just shut down...now when i go to start it i can get it to start for about a second then it just dies on me
when i give it some gas on start up it does better but a weird thing i noticed was my speedo was going all over the place to??????? i have no clue whats wrong only thing i can think of is electrical

my setup is a t3/t4 w/525cc injectors

 

driving on basemap

good luck getting it running again

 

thanks for the input! i no its not smart to drive on a basemap but sometimes things dont always go to plan money wise..dont need to be bashed about it i no its not a good idea just looking ot get my car running again so i can get it tuned finally..

 

let me guess... a CROME basemap?

They are hit and miss for turnkey startability; known to happen. Does the CEL stay on?

 

so far the only thing i can come up wit is expletiveed up map sensor im gonna check the voltage tomorrow

 

it may be the dizzy also

 

you shoulda at least took the w.g. spring out.... Running on a basemap is just asking for trouble imo. And you cant blame not having the money for a tune as the fault... money doesnt drive cars and cause problems, ppl do

as far as the problem. Like mentioned it could be a map sensor problem, hopefully thats what the issue is

 

no cel ill check the dizzy and have my buddy bring over his spare map sensor and see if that makes it run well..any other suggestions?brand new plugs gapped well

 

yes i no its my own fault for driving on it

it starts up and runs really well for about 2seconds like it use to then when it tries to idle just dies so i hope its the map sensor ( i need a different one anyways to turn the boost up once i get TUNEDDDDD)

 

Not to burst your bubble... but looking back into this thread if it were the map sensor im pretty sure it would throw a code. And sense you said to have no codes the problem could be elsewhere

 

when you first got the basemap, did the car start up and run fine and stayed idling? usually when a car starts up and dies right away, the a/f is too lean. try to up ur fuel pressure to see if that helps, but get the car tuned!

 

check your grounds.. like the one that is on the water jacket.. It is part of the wiring harness... maybe loose. just a thought...

 

ive been looking into the map sensor problem and it doenst ALWAYS throw a code which is basically wat im counting on haha we'll see in the morning tho

and k20 it idled fine when first started but my wideband should be here tomorrow, how cna i up my fuel pressure tho?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by WGFletch4WS &raquo;</TD></TR><TR><TD CLASS="quote">ive been looking into the map sensor problem and it doenst ALWAYS throw a code which is basically wat im counting on haha we'll see in the morning tho

and k20 it idled fine when first started but my wideband should be here tomorrow, how cna i up my fuel pressure tho?</TD></TR></TABLE>

do you have a aftermarket fuel pressure regulator?

 

do u have an adjustable fuel pressure regulator? if u do turn the fuel pressure up.

 

i have an AEM one but will it randomly jsut die out liek that? it ran fine for about 15miles before this happend..ive also heard bad things about the adj regulators

EDIT: also i put new plugs in it while i was waiting for the tow truck and they wer real dark it was def running rich (which i would assume from a basemap i no) so how could my fuel pressure randomly change from extra rich to very lean?just upping hte fuel pressure seems almost to easy


Modified by WGFletch4WS at 10:58 PM 2/6/2008

 

well turning the fuel pressure up could only help if running lean. If your not running lean then it wont help at all. Might want to do a compression test just to make sure the motor isnt hurt any.... but im still confused with the speedo bouncing. Never heard that one before

 

the speedo is the weird part...its wat makes me almost positive its eletrcical somethings f'd

im prety sure the motor is fine tho cuz when it starts at first it sounds very good just like it should then when it tries to establish an idle it just drops right down and dies..

does that rule out the fuel pressure tho?
leaves map sensor and dizzy?any mroe suggestions?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by WGFletch4WS &raquo;</TD></TR><TR><TD CLASS="quote">the speedo is the weird part...its wat makes me almost positive its eletrcical somethings f'd</TD></TR></TABLE>

Correct.

Check your thermostat housing ground, holmes, as well as any engine to battery/chassis ground straps.

 

added to teh top of the list for the morning


<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Joseph Davis &raquo;</TD></TR><TR><TD CLASS="quote">

Correct.

Check your thermostat housing ground, holmes, as well as any engine to battery/chassis ground straps.</TD></TR></TABLE>

 

Did this ever get sorted out? I have the same problem.

~bob

 

my ground wire by teh thermostat was a litttttttllleee loose...tightend it back up and runs like a champ again