 need help trouble shooting |
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 Oct 26 2004, 08:43 PM
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#1
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 DSMCentral Freak  Group: Members Posts: 257 Joined: 21-July 04 From: Normal Member No.: 351  |
my 92 laser AWD sputters when i get on the throttle. it doesn't feel like fuel cut beacuse it will keep trying to accelerate. i data logged and my injector duty spikes at 150% and when i do a pull my throttle position is never 100% according to the logger, it jumps between 75 and 95% when my foot is on the floor. timing is steady at 15 degrees and there is no knock. also i keep throwing a CEL for a few seconds when the car is cold. it will go on for a few seconds and then turn off and do that two or three times and then it turns off for good. i tried reading the code with my data logger and there are no stored or currect codes even when the light is still on.
i tried changing my plugs and wires, different 450cc injectors, turning down the boost from 16psi to 11psi, a different MAF, and retuning with my SAFC and nothing has cured my problem. has anyone ever had this problem before. any suggestions would be greatly appreciated. thanks. i can do pulls to record any other info if it would help. i am using the MMCd logging software. the only fuel system change that is done to the car is a 3rd gen RX-7 fuel pump and the SAFC (yeah i know i should have got a translator but i got a hellof a deal on the SAFC). --------------------  |
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Oct 26 2004, 10:03 PM
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#2
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 Post Master Group: Members Posts: 658 Joined: 7-October 03 From: Pekin Member No.: 181 |
boost leak test? properly gapped plugs? wires?
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Oct 26 2004, 10:12 PM
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#3
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DSMCentral Freak Group: Members Posts: 257 Joined: 21-July 04 From: Normal Member No.: 351 |
haven't done a boost leak test but i already tried new wires and the new plugs were gapped to spec.
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Oct 26 2004, 10:57 PM
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#4
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DSMCentral Freak Group: Members Posts: 257 Joined: 21-July 04 From: Normal Member No.: 351 |
QUOTE (spyonu2007 @ Oct 26 2004, 10:53 PM) cooked ecu? It happens. Bad crank angle sensor? Id put money on the ecu. Pull it out, open her up and inspect it. that is a good call. i will try and throw a different ECU in the car as soon as i can find one. does anyone in the B/N area have a 91-94 ECU i can throw in my car? -------------------- |
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Oct 27 2004, 01:52 PM
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#5
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DSM Tech Wizard Group: Members Posts: 2,404 Joined: 16-December 03 From: Fletcher/Bloomington Member No.: 214 |
I'll let ya borrow it for a night for a six pack
-------------------- "I hear he tunes the space shuttle also...and that thing is fast"
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Oct 27 2004, 03:16 PM
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#6
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 Post Master Group: Members Posts: 972 Joined: 30-October 02 Member No.: 34 |
I posted a couple of times to your thread over on CID before it made it here. Not sure if you've been through those yet.
Glad to see you made it over though to get some more insight!  If you pull the CAS, you might want to mark it's location/orientation prior to removal. That way if you end up putting the original back in, you won't have any guesswork on clocking it timing-wise. -------------------- |
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Oct 29 2004, 11:38 PM
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#7
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DSMCentral Freak Group: Members Posts: 257 Joined: 21-July 04 From: Normal Member No.: 351 |
QUOTE (turbohcar @ Oct 27 2004, 01:52 PM) I'll let ya borrow it for a night for a six pack sounds good. can you stop by the house on saturday? i get off work around 630. i will send you a PM with my phone number. give me a call. -------------------- |
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Nov 9 2004, 11:40 PM
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#8
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DSMCentral Freak Group: Members Posts: 257 Joined: 21-July 04 From: Normal Member No.: 351 |
in case anyone was wondering i got my car runninig properly again. it was the ECU. i don't know what to deal is this year but my room mates ECU died this year too in his FWD. anyways if anyone else is haveing the same issues i had try swaping ECU's.
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Nov 10 2004, 09:15 AM
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#9
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DSMCentral Freak Group: Members Posts: 257 Joined: 21-July 04 From: Normal Member No.: 351 |
i made a reply in your other thread.
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Nov 10 2004, 09:55 AM
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#10
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 Eats and sleeps DSM jargin. Group: Members Posts: 1,035 Joined: 31-March 04 From: Chambana Member No.: 268 |
ecu's seem to be the main other weak link on dsm's besides tranny's. They have about a ten year shelf life before they start having issues, and most of the 1g dsm's are hitting that 10-15year mark.
-------------------- game over.
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Nov 12 2004, 01:58 PM
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#11
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 DSMCentral Freak Group: Members Posts: 334 Joined: 29-September 02 Member No.: 21 |
QUOTE (jvb6806 @ Nov 10 2004, 05:40 AM) in case anyone was wondering i got my car runninig properly again. it was the ECU. i don't know what to deal is this year but my room mates ECU died this year too in his FWD. anyways if anyone else is haveing the same issues i had try swaping ECU's. Did I not tell you this is what it was? I replaced 4 ECU's in my talon in the 1 year that i owned it. 
-------------------- 2003 Mustang GT
2008 Harley Nightster 1990 Mustang LX 5.0 notch |
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Nov 12 2004, 02:16 PM
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#12
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 Post Master Group: Members Posts: 729 Joined: 19-September 02 From: New Baden, IL Member No.: 7 |
I believe I am on ECU #3 from advance auto parts. Apparently, the age alone will make the rebuilt ECU's go to crap, too. I still am suspicious of this one, too.
-------------------- -The original (member) 007. Stop looking at me Spy!!
-98 S-10 P/U creepin' low on stock 15s!! -You come off just a little more intelligent if you know how to spell the insults in addition to saying them |
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Nov 13 2004, 10:15 AM
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#13
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Eats and sleeps DSM jargin. Group: Members Posts: 1,035 Joined: 31-March 04 From: Chambana Member No.: 268 |
sounds like AEM EMs is cheaper after three years of replacing ecu's...
-------------------- game over.
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