Starting problems ...Well its not exactly a starting problem. and i know theres tons of threads like this but i havent found an answer Its a 89 2.8l and it starts up fine, but then the idle drops and then dies, and in order for me to keep it running i have to keep the idle high for a little while (about 1 min or so) and it'll stay running. If you guys could help me out, once again :waveman: and recently me and my dad just changed the front brakes and rotors, the oil, and spark plugs. and the gap is at 45. any ideas guys? Thanks!:D |
Re: Starting problems My friends 87 2.8 camaro was jus doing this, we put a idle air control valve located on the mpfi. It started right up and idled fine after replaced his. Take it out if its black and all nasty, its prolly your problem. Hope that helped a little. |
Re: Starting problems I'll give it a look later on today. thanks for the help. just an hour ago me and my dad started it up, and it was revving at 1500 rpms in park, while it was warm. my dad touched the tps a little and it went down to 800 rpms, 700-650 in drive. and it didnt die. the tps was replaced last fall from a shop, and i think my dad had messed with it afterwards. |
Re: Starting problems Update: I took the car to a local shop, and they told me i need a new ECM, so i'm going to replace it tomorrow. Hopefully it fixes my problems. |
Re: Starting problems ECM put in, and car still dying out. it'll start back up right away but it will die out. anyone know of any other problems that could be causing my car to do this? help! |
Re: Starting problems The problem you are having is common with the failure of the mass airflow sensor... I've replaced mine 3 times due to this. |
Re: Starting problems oh ok. i was starting to think it was the tps again. thx for helping me out |
Re: Starting problems Almost forgot... If you have the adjustable TPS, make sure that the voltage signal between the blue and black wires is .55VDC with the throttle plate fully closed and the engine not running. A TPS output higher than .65VDC means that the ECM will think the throttle plate is partially open and flood out the engine (if severe enough) or throw a code 35 (uncontrollable idle speed). |
Re: Starting problems
Originally Posted by xxKing Cottonxx
(Post 4756688)
ECM put in, and car still dying out. it'll start back up right away but it will die out. anyone know of any other problems that could be causing my car to do this? help! |
Re: Starting problems For future reference autozone should have been able to test your old ECM and let you know if it was bad. They tested my ole' ladies and hers was about 120 bucks. But hers was bad............ |
Re: Starting problems i didnt know that buick. thanks guys |
Re: Starting problems Rather than starting a new thread, I'll post my problem here. My car will not start and I already made sure that it was not the battery. When I turn the key it does not even crank, but the dash lights and all of that stuff come on. I'm assuming that it is the starter, but I want to make sure before I go out and buy any parts. Is there anything else that it could be? An acquaintance of mine thinks it might be a fuse, but I'm certain I replaced all of those. |
Re: Starting problems UPDATE: Car was checked out again by a local shop, Guys said it was the ecm. it was a bad one. so monday i will be getting a replacement one again and putting it in. WhitePhoenix: My car had the same problem, and it was the starter. hope that helps |
Re: Starting problems
Originally Posted by xxKing Cottonxx
(Post 4756206)
Update: I took the car to a local shop, and they told me i need a new ECM, so i'm going to replace it tomorrow. Hopefully it fixes my problems.
Originally Posted by xxKing Cottonxx
(Post 4756688)
ECM put in, and car still dying out. it'll start back up right away but it will die out. anyone know of any other problems that could be causing my car to do this? help!
Originally Posted by xxKing Cottonxx
(Post 4757883)
UPDATE: Car was checked out again by a local shop, Guys said it was the ecm. it was a bad one. so monday i will be getting a replacement one again and putting it in. |
Re: Starting problems The ecm was purchased at a bumper to bumper store near my house, could it be refurbished and be bad? and my father helped me put it in. thx for lookin out |
Re: Starting problems WhitePhoenix there is a fused link to the starter down along the frame rail, possible that could be your problem. |
Re: Starting problems :help:Another question guys, might sound dumb, but whats the correct way to idle learn a 2.8 89 firebird?:help: oh and im exchanging the faulty ecm and getting a different one in return, lets hope it works :driving: |
Re: Starting problems
Originally Posted by xxKing Cottonxx
(Post 4759788)
:help:Another question guys, might sound dumb, but whats the correct way to idle learn a 2.8 89 firebird?:help: oh and im exchanging the faulty ecm and getting a different one in return, lets hope it works :driving: |
Re: Starting problems oh ok thanks maverick |
Re: Starting problems Well it's the chip (prom?) now I need another one. Anyone know where to get one for a decent price? Either stock or power chip? Help again lol. Thx |
Re: Starting problems What's the 4-letter code on the top of the chip, on the silver sticker? |
Re: Starting problems chip says: DELCO AMBD 7053 |
Re: Starting problems I have to look at mine, but I MAY have one... |
Re: Starting problems ok, thanks, if u do pm me plz thx again |
Re: Starting problems One last question (maybe) lol What are some signs that your ecm, or chip(prom) has gone bad? jus curious |
Re: Starting problems If the prom and memcal chips are bad, the SES light will flash constantly like a strobe light. ebay is the only place I found for used chips, but just note you might end up with bad ones, and do not even complain to the seller or leave anything bad, as there is only 1 guy who sells used chips and you will end up buying from him again. I did twice, 1 set bad, 1 good. |
Re: Starting problems
Originally Posted by Gumby
(Post 4762413)
If the prom and memcal chips are bad, the SES light will flash constantly like a strobe light. ebay is the only place I found for used chips, but just note you might end up with bad ones, and do not even complain to the seller or leave anything bad, as there is only 1 guy who sells used chips and you will end up buying from him again. I did twice, 1 set bad, 1 good. The eBay seller's name is ragged... He has all sorts of chips for just about everything that has a removable chip. He screwed me out of an HNL, so I avoid him like the plague. I ended up getting my HNL in a whole ECM. |
Re: Starting problems
Originally Posted by Maverick H1L
(Post 4762499)
The SES may not necessarily flash like that with a bad PROM or MEMCAL. One of my chips put into one of my ECMs, both of which were good, would set the SES off like that, but if the PROM were put into its original ECM and plugged in, everything would be fine. Also, there are a couple codes that the ECM may post if there is something wrong with the combination. The eBay seller's name is ragged... He has all sorts of chips for just about everything that has a removable chip. He screwed me out of an HNL, so I avoid him like the plague. I ended up getting my HNL in a whole ECM. |
Re: Starting problems Code 42 is a spark control problem (generally pops up when you disconnect the set timing connector by the blower fan). Has nothing to do with the PROM, generally. The codes that can be set by a problem with the ECM/PROM/CALPAK combination are 51, 52, and 55. |
Re: Starting problems
Originally Posted by Maverick H1L
(Post 4802447)
Code 42 is a spark control problem (generally pops up when you disconnect the set timing connector by the blower fan). Has nothing to do with the PROM, generally. The codes that can be set by a problem with the ECM/PROM/CALPAK combination are 51, 52, and 55. |
Re: Starting problems so i put in a rebuilt starter, new cap+rotor and a used (from Wreckers) Ignition module. it still wont start....any ideas people? i am soo lost |
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