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View Full Version : the air must have been bad for my sc


al35thsc
05-21-2002, 12:13 PM
i posted this on the tech forum
my sc died sunday morning and it has me stumped.

saturday was the southern california cruise, and i easily put about 200 miles on the odometer. it didn't give me a single problem except for overheating a bit on a steep hill (got to the m in norm but nothing new there).

the following day, however, was not as good. on my way to my gf's house, it died. i was driving ~75-85 mph on the freeway and it ran fine. i got off the freeway and did some complete stops and side streets. i reached an intersection and needed to make a right turn. well i was on the phone at the same time and was approaching the intersection slowing to a complete stop and the tach bounced around eradically from 600-1500 rpms and the engine sounded like it sputtered and then it died. i had no warning lights and everything was fine, then all the lights on the cluster went on and i cranked and cranked but it wouldn't turn.

i then towed it to my gf's house and it is sittign there as i type. i talked to john shelton and adam mullen and both suggested the cam sesnor. so i decided to buy one from ford today and went to replace it but had no luck. i have fuel reaching the fuel rail, and the fuel pump still primes after each key on engine off.

i ran codes with a code reader from walmart it beeps and flashes so it does the trick. it gave me a BAP sensor code and a tps code, if i remember they were codes 12 and 122.

my question is if they are shot, would they have given me the symptoms i described...or in ohter words are the symptoms i described related to these two sensors?

al

ps this engine has about 1800 miles on it, and the car itself has about 138k, the tranny has about 11k. should i replace the sensors or should i take it to someone and let them deal with it??? i'd prefer the former than the later ofcourse, that is why i am here!

anyone have any clue as to what it could be let me know, im stuck driving my pop's 78 f-150 and ecven that is dying as well, stupid batery

RonzSC
05-21-2002, 12:33 PM
What's a b/p sensor?
Well I'll tell you, I have had those symptoms and it was the cam sensor. I have had those symptoms and it was the crank sensor. I have had those problems and it was the DIS module.

When you did the cam sensor, did you notice a bit of anti-freeze around the weep hole of the water pump? (Possibly from the over heating. the liquid running down the front of the motor onto those sensors can sreww them up at times.

Take the less expensive route first. Get some heat sink material from Radio shack and dab a bit on the back of the Dis and remount.
You have a new motor so is it posssible that it started running choppey during that later part of the cruise? Kinda like it was building u p carbon and needed to be blown out?
Sorry Al, you must be bummed.

al35thsc
05-21-2002, 12:46 PM
had a horrible horrible day yesterday :(

the BAP Sensor is the Barometric Absolute Pressure...it is that thing on the firewall witht he little pn on it that doesnt do anything (right by the throttle) anyway, the crank sensor was replaced about 3 or 4 years ago and no i didnt notice any antifreeze anywhere...it really has me stumped...i tired some bulb grease, whic is also supposed to work on distributors, sparkplugs wires etc. and it didnt do anything...for a while when i would rev the engine it would rev normally and then when it was coming back down it would drop faster rpm's from 1200-900...kinda weird too

al

im waiting on more suggestions and then its off to go check it out, car is at lolo's

RonzSC
05-21-2002, 12:50 PM
Would it ut-out like you cut the electricity to the engine? And then it would catch fire again and run ok?

The Beer Barron
05-21-2002, 12:50 PM
I had a similar problem in my POS Dodge. It was the TPS sensor. The TPS may be sending erroneous readings to the computer, making it think the throttle is open, but it isn't. TPS is my guess.

RonzSC
05-21-2002, 12:54 PM
Hi Barron!
I junno...
Al, did you say that you bought a new cam sensor and put it in yesterday or so?
If not, it sounds more and more like a cam sensor. If not...crank sensor.
I would never disagree with DA Beer Barron, however.

al35thsc
05-21-2002, 12:58 PM
cam sensor is already in...tps had been craping out on me but it still ran just kinda rattled a bit when i went wot to quick. and i hear the car should still start with a bad tps...any more guesses guys? i dont wanna be just buying stuff and puttin git in, tps is ok since its not too much $$$ but if i do that and the bap, and then have it be the dis, i may not have enough $$$ to buy it...then im assed out :lol: im gonna go cry now :lol:

al


[edit] and the problem was more like it rpm's bounced and then just died, never turned on again...its looking mreo and more like i willg et tps and cranks sensor...and if it doesnt work, it will be towed to the palce that did the engine...someome else mentioned that if the shop reused the same bolt ont he harmonic balancer, that that may be it cuz it would shake too much, i guess ic an go check it out first...but oh well

RonzSC
05-21-2002, 01:03 PM
Steady Big Stud!
Do you need a hug, NorCal style?
***HUG****
You had mentioned the fuel pump a couple of times in the past...how come?
But the SC doesn't fire at all, which makes me think electrical rather than fuel or mechanical.
I wish me and Barron were closer to you.

al35thsc
05-21-2002, 01:08 PM
nah, fuel pump was just a preventive maintenance that i wanted to do...fuel is getting there, it is an electrical problem...yep i wish u guys lived like right around the corner, then i can have u guys take a look at it and help me out...

thanks for the hug ron, but next time can u not squeeze so hard :lol: so calers dont hug!!!

al

RonzSC
05-21-2002, 01:18 PM
Al...just a thought...try unhooking the cam sensor and crank a few times and then rehook it. Make sure you look at the connection real well and get a good feel when you re-attach.


PS Did Lolo like her shirt?

al35thsc
05-21-2002, 01:22 PM
what would that do ron??? and yep, she loves her so cal shirt, it hink its the first REAL club she has ever belonged to :) such great members, such nice meets

al

RonzSC
05-21-2002, 01:26 PM
I did this once when I was strandeed in a parking lot and it fired up after I re-attached it. I then replaced the Cam sensor.
It wouldn't be the firsttime that the sensor you put in is bad also....crummy thought, I know.

al35thsc
05-21-2002, 01:33 PM
ok well i have heard some suggestions and am gonna go give it a shot if it doesnt work, i will call the engine place and have them suffer with it.

al

al35thsc
05-21-2002, 03:24 PM
here at lore's and i found out that the crank bolt sheared off at the pulley or dampner...there is no head bolt where it should be and i can see the broken piece still inside...my q now is, will that mess up timing and would it keep it from restarting???

al

any sugestions???

mannysc
05-21-2002, 03:40 PM
check to see if pullys line up straight is damper pulling away from motor and sensors???? also look for damage to sensors maybe it wabbled and struck sensor..

mannysc
05-21-2002, 03:45 PM
now make the shop that did your motor fix it they over tighten it or not enough. good luck alex.

mercury65
05-21-2002, 07:48 PM
well i would put in my 2 cents but it looks like you found your trouble

al35thsc
05-22-2002, 12:56 AM
manny, merc, ron, everyone, thanks for yer help...it will get towed tomorrow and get fixed at the shop that did the engine, im just gonna btich and say it was their fault for reusing the same bolt and or overtightening it, i bought the sensor from ford (crank) and it was opertty friggin pricey 114.00 but with that and the cam sensor i should be good to start doing other stuff without having to worry...maybe also do dis before i start heavily modding stuff

al

just took a nap right now, been a long time since i got a decent rest