98 Camaro no start - Page 2 - LS1LT1 Forum : LT1, LS1, Camaro, Firebird, Trans Am, Engine Tech Forums
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post #16 of 44 (permalink) Old 02-18-2014, 09:58 PM Thread Starter
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coco, what is it suppose to look like when in time?, is it like any other v8/ v6 motor?
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post #17 of 44 (permalink) Old 02-18-2014, 10:53 PM Thread Starter
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oh if I do need a motor, can I put one out of a fwd bridal? like a bonneville or grand am?
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post #18 of 44 (permalink) Old 02-19-2014, 07:44 AM
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You can download several different years of 4th gen manuals in the 4th gen section. Look for thread titled "GM service manuals." Click the link and download the 98 manual.

It will have diagrams of how the crank and cam gear are supposed to look.

No you can't use a front engine 3800. Here's why. While the engine has most of the same internal components as the f-body engine, the block and heads are different. This is because of the transverse mounting requirements, and the different water pump casting on the block that is used in front drive.

On my older camaro with a 3.1 v6, even the oil filter mounting is different between rear and front drive, so I suspect the 3800 has the same differences.

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post #19 of 44 (permalink) Old 02-19-2014, 07:38 PM Thread Starter
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timing is good, compression bout 110, push rods look straight on glass table......the timing cover is broken though, also there is another computer in the passenger seat,,...also will a icm from a grand am work?
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post #20 of 44 (permalink) Old 02-19-2014, 08:22 PM
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Exclamation

This use to happen to me 98 Bonneville Ssei it may be the module under the coils......check those coils also...Try starting the car with one of the coil wires off......then put the wire back on then try starting again.do this with all the wires you should be able to see or hear the spark while cranking leave the coil wire close to the coil post...you might have to use an assistant.....do not touch those coil wires while cranking or if the car is on....or you will have a hair rising experience..I swear when I did this the 3800 would start once I put the wires back on.....do one at a time not to get them mixed up...be careful not to get the chit shocked out of u
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post #21 of 44 (permalink) Old 02-20-2014, 08:43 PM Thread Starter
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ok the modular under the coil pack is good!,I can smell bad gas! but still no start

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post #22 of 44 (permalink) Old 02-20-2014, 10:35 PM Thread Starter
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Ima re check injector pulse tomorrow
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post #23 of 44 (permalink) Old 02-21-2014, 07:09 AM
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Unlike the lt1 engine that uses opti signals to tell pcm crank and cam position, your 3800 has a crank position sensor and a cam position sensor that tells pcm what position they are in.

If either one or both are not working correctly, the pcm will fire the engine out of sequence, thus the back fire. You need to consult the 3800 engine section from 98 service manual for testing these.

And when testing the crank and cam position sensor, don't forget that wiring and connectors can cause problems also.
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post #24 of 44 (permalink) Old 02-21-2014, 07:23 AM Thread Starter
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I replaced both sensors with new ones, and the cam sensor pig tail they had speaker wire for it lol but its all replaced
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post #25 of 44 (permalink) Old 02-21-2014, 02:57 PM
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I could be way off here but i do remember on the older fwd 3.8 i recall seeing somewhere that the little tab on timing chain would fall off and not trigger the cam sensor sounds like you got the car all apart but if the rwd 3.8 is triggered off the cam somwhere else than the front cam gear i could be way off.

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post #26 of 44 (permalink) Old 02-21-2014, 07:01 PM Thread Starter
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new chain and gears
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post #27 of 44 (permalink) Old 02-22-2014, 06:02 PM Thread Starter
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it runs!!!! it was the fuel!! I poured some out and it didn't ignite so I emptied the fuel tank and put in fresh gas, and pumped it till it smelt fresh then cranked on it till it started!! but damn it smokes lol Ima finish putting the accessories on it tomorrow and drive it around see if the smoke goes away....... we think what happened is the icm under the coils went bad then the car sat for ever then 2 owners later I got it running,,,, thank you guys for your help!
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post #28 of 44 (permalink) Old 02-23-2014, 07:13 PM Thread Starter
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well it smokes I'll try and drive it tomorrow and see if it clears up lol wow! I might need a new engine
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post #29 of 44 (permalink) Old 02-25-2014, 11:41 PM Thread Starter
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ok Ima drive it tomorrow but I have a ? when I turn the key forward the fuel pump stays on and if I shut it off, the fuel pump stays on till I open the door? could a fuel pressure regulate do that?
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post #30 of 44 (permalink) Old 02-26-2014, 10:09 AM
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The regulator just regulates the pressure the pcm actuates a relay that sends voltage to the pump to turn it on so maybe the relay is sticking

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